diff --git a/gallery_dl/extractor/8muses.py b/gallery_dl/extractor/8muses.py
index dfc34224..7cb6eee9 100644
--- a/gallery_dl/extractor/8muses.py
+++ b/gallery_dl/extractor/8muses.py
@@ -85,8 +85,7 @@ class _8musesAlbumExtractor(Extractor):
             "parent" : text.parse_int(album["parentId"]),
             "views"  : text.parse_int(album["numberViews"]),
             "likes"  : text.parse_int(album["numberLikes"]),
-            "date"   : self.parse_datetime(
-                album["updatedAt"], "%Y-%m-%dT%H:%M:%S.%fZ"),
+            "date"   : self.parse_datetime_iso(album["updatedAt"]),
         }
 
     def _unobfuscate(self, data):
diff --git a/gallery_dl/extractor/ao3.py b/gallery_dl/extractor/ao3.py
index 49a8fa75..7ee528a4 100644
--- a/gallery_dl/extractor/ao3.py
+++ b/gallery_dl/extractor/ao3.py
@@ -182,10 +182,10 @@ class Ao3WorkExtractor(Ao3Extractor):
                 extr('<dd class="freeform tags">', "</dd>")),
             "lang"         : extr('<dd class="language" lang="', '"'),
             "series"       : extr('<dd class="series">', "</dd>"),
-            "date"         : self.parse_datetime(
-                extr('<dd class="published">', "<"), "%Y-%m-%d"),
-            "date_completed": self.parse_datetime(
-                extr('>Completed:</dt><dd class="status">', "<"), "%Y-%m-%d"),
+            "date"         : self.parse_datetime_iso(extr(
+                '<dd class="published">', "<")),
+            "date_completed": self.parse_datetime_iso(extr(
+                '>Completed:</dt><dd class="status">', "<")),
             "date_updated" : self.parse_timestamp(
                 path.rpartition("updated_at=")[2]),
             "words"        : text.parse_int(
diff --git a/gallery_dl/extractor/arcalive.py b/gallery_dl/extractor/arcalive.py
index 94e49988..51f54aa8 100644
--- a/gallery_dl/extractor/arcalive.py
+++ b/gallery_dl/extractor/arcalive.py
@@ -49,8 +49,7 @@ class ArcalivePostExtractor(ArcaliveExtractor):
         files = self._extract_files(post)
 
         post["count"] = len(files)
-        post["date"] = self.parse_datetime(
-            post["createdAt"][:19], "%Y-%m-%dT%H:%M:%S")
+        post["date"] = self.parse_datetime_iso(post["createdAt"][:19])
         post["post_url"] = post_url = \
             f"{self.root}/b/{post['boardSlug']}/{post['id']}"
         post["_http_headers"] = {"Referer": post_url + "?p=1"}
diff --git a/gallery_dl/extractor/artstation.py b/gallery_dl/extractor/artstation.py
index 9a14f5e8..c332ab21 100644
--- a/gallery_dl/extractor/artstation.py
+++ b/gallery_dl/extractor/artstation.py
@@ -126,8 +126,7 @@ class ArtstationExtractor(Extractor):
         data["title"] = text.unescape(data["title"])
         data["description"] = text.unescape(text.remove_html(
             data["description"]))
-        data["date"] = self.parse_datetime(
-            data["created_at"], "%Y-%m-%dT%H:%M:%S.%f%z")
+        data["date"] = self.parse_datetime_iso(data["created_at"])
 
         assets = data["assets"]
         del data["assets"]
diff --git a/gallery_dl/extractor/batoto.py b/gallery_dl/extractor/batoto.py
index 7495751b..0d35540c 100644
--- a/gallery_dl/extractor/batoto.py
+++ b/gallery_dl/extractor/batoto.py
@@ -167,8 +167,7 @@ class BatotoMangaExtractor(BatotoBase, MangaExtractor):
 
             data["chapter"] = text.parse_int(chapter)
             data["chapter_minor"] = sep + minor
-            data["date"] = self.parse_datetime(
-                extr('time="', '"'), "%Y-%m-%dT%H:%M:%S.%fZ")
+            data["date"] = self.parse_datetime_iso(extr('time="', '"'))
 
             url = f"{self.root}/title/{href}"
             results.append((url, data.copy()))
diff --git a/gallery_dl/extractor/bluesky.py b/gallery_dl/extractor/bluesky.py
index f1fd2eee..d314a28b 100644
--- a/gallery_dl/extractor/bluesky.py
+++ b/gallery_dl/extractor/bluesky.py
@@ -135,8 +135,7 @@ class BlueskyExtractor(Extractor):
 
         post["instance"] = self.instance
         post["post_id"] = self._pid(post)
-        post["date"] = self.parse_datetime(
-            post["createdAt"][:19], "%Y-%m-%dT%H:%M:%S")
+        post["date"] = self.parse_datetime_iso(post["createdAt"][:19])
 
     def _extract_files(self, post):
         if "embed" not in post:
diff --git a/gallery_dl/extractor/booth.py b/gallery_dl/extractor/booth.py
index 17679da0..0be05c42 100644
--- a/gallery_dl/extractor/booth.py
+++ b/gallery_dl/extractor/booth.py
@@ -70,8 +70,7 @@ class BoothItemExtractor(BoothExtractor):
                 url + ".json", headers=headers, interval=False)
 
         item["booth_category"] = item.pop("category", None)
-        item["date"] = self.parse_datetime(
-            item["published_at"], "%Y-%m-%dT%H:%M:%S.%f%z")
+        item["date"] = self.parse_datetime_iso(item["published_at"])
         item["tags"] = [t["name"] for t in item["tags"]]
 
         shop = item["shop"]
diff --git a/gallery_dl/extractor/chevereto.py b/gallery_dl/extractor/chevereto.py
index 465da8dd..e58a4d7b 100644
--- a/gallery_dl/extractor/chevereto.py
+++ b/gallery_dl/extractor/chevereto.py
@@ -79,8 +79,7 @@ class CheveretoImageExtractor(CheveretoExtractor):
             "url"  : url,
             "album": text.remove_html(extr(
                 "Added to <a", "</a>").rpartition(">")[2]),
-            "date" : self.parse_datetime(extr(
-                '<span title="', '"'), "%Y-%m-%d %H:%M:%S"),
+            "date" : self.parse_datetime_iso(extr('<span title="', '"')),
             "user" : extr('username: "', '"'),
         }
 
@@ -116,8 +115,7 @@ class CheveretoVideoExtractor(CheveretoExtractor):
                 'class="far fa-clock"></i>', "—"),
             "album": text.remove_html(extr(
                 "Added to <a", "</a>").rpartition(">")[2]),
-            "date"     : self.parse_datetime(extr(
-                '<span title="', '"'), "%Y-%m-%d %H:%M:%S"),
+            "date"     : self.parse_datetime_iso(extr('<span title="', '"')),
             "user"     : extr('username: "', '"'),
         }
 
diff --git a/gallery_dl/extractor/civitai.py b/gallery_dl/extractor/civitai.py
index d2c32507..db278f1b 100644
--- a/gallery_dl/extractor/civitai.py
+++ b/gallery_dl/extractor/civitai.py
@@ -86,8 +86,7 @@ class CivitaiExtractor(Extractor):
                     images = self.api.images_post(post["id"])
 
                 post = self.api.post(post["id"])
-                post["date"] = self.parse_datetime(
-                    post["publishedAt"], "%Y-%m-%dT%H:%M:%S.%fZ")
+                post["date"] = self.parse_datetime_iso(post["publishedAt"])
                 data = {
                     "post": post,
                     "user": post.pop("user"),
@@ -122,8 +121,7 @@ class CivitaiExtractor(Extractor):
                     data["post"] = post = self._extract_meta_post(file)
                     if post:
                         post.pop("user", None)
-                file["date"] = self.parse_datetime(
-                    file["createdAt"], "%Y-%m-%dT%H:%M:%S.%fZ")
+                file["date"] = self.parse_datetime_iso(file["createdAt"])
 
                 data["url"] = url = self._url(file)
                 text.nameext_from_url(url, data)
@@ -180,8 +178,7 @@ class CivitaiExtractor(Extractor):
             if "id" not in file and data["filename"].isdecimal():
                 file["id"] = text.parse_int(data["filename"])
             if "date" not in file:
-                file["date"] = self.parse_datetime(
-                    file["createdAt"], "%Y-%m-%dT%H:%M:%S.%fZ")
+                file["date"] = self.parse_datetime_iso(file["createdAt"])
             if self._meta_generation:
                 file["generation"] = self._extract_meta_generation(file)
             yield data
@@ -216,8 +213,7 @@ class CivitaiExtractor(Extractor):
     def _extract_meta_post(self, image):
         try:
             post = self.api.post(image["postId"])
-            post["date"] = self.parse_datetime(
-                post["publishedAt"], "%Y-%m-%dT%H:%M:%S.%fZ")
+            post["date"] = self.parse_datetime_iso(post["publishedAt"])
             return post
         except Exception as exc:
             return self.log.debug("", exc_info=exc)
@@ -278,8 +274,7 @@ class CivitaiModelExtractor(CivitaiExtractor):
             versions = (version,)
 
         for version in versions:
-            version["date"] = self.parse_datetime(
-                version["createdAt"], "%Y-%m-%dT%H:%M:%S.%fZ")
+            version["date"] = self.parse_datetime_iso(version["createdAt"])
 
             data = {
                 "model"  : model,
@@ -593,8 +588,7 @@ class CivitaiGeneratedExtractor(CivitaiExtractor):
         self._require_auth()
 
         for gen in self.api.orchestrator_queryGeneratedImages():
-            gen["date"] = self.parse_datetime(
-                gen["createdAt"], "%Y-%m-%dT%H:%M:%S.%fZ")
+            gen["date"] = self.parse_datetime_iso(gen["createdAt"])
             yield Message.Directory, gen
             for step in gen.pop("steps", ()):
                 for image in step.pop("images", ()):
diff --git a/gallery_dl/extractor/comick.py b/gallery_dl/extractor/comick.py
index e47cfa09..4742e694 100644
--- a/gallery_dl/extractor/comick.py
+++ b/gallery_dl/extractor/comick.py
@@ -114,10 +114,8 @@ class ComickChapterExtractor(ComickBase, ChapterExtractor):
             "chapter_hid"   : ch["hid"],
             "chapter_string": chstr,
             "group"   : ch["group_name"],
-            "date"    : self.parse_datetime(
-                ch["created_at"][:19], "%Y-%m-%dT%H:%M:%S"),
-            "date_updated"  : self.parse_datetime(
-                ch["updated_at"][:19], "%Y-%m-%dT%H:%M:%S"),
+            "date"    : self.parse_datetime_iso(ch["created_at"][:19]),
+            "date_updated"  : self.parse_datetime_iso(ch["updated_at"][:19]),
             "lang"    : ch["lang"],
         }
 
diff --git a/gallery_dl/extractor/dynastyscans.py b/gallery_dl/extractor/dynastyscans.py
index 8906d44f..6d808d9b 100644
--- a/gallery_dl/extractor/dynastyscans.py
+++ b/gallery_dl/extractor/dynastyscans.py
@@ -166,8 +166,6 @@ class DynastyscansAnthologyExtractor(DynastyscansSearchExtractor):
             data["scanlator"] = content[1].text[11:]
             data["tags"] = content[2].text[6:].lower().split(", ")
             data["title"] = element[5].text
-            data["date"] = self.parse_datetime(
-                element[1].text, "%Y-%m-%dT%H:%M:%S%z")
-            data["date_updated"] = self.parse_datetime(
-                element[2].text, "%Y-%m-%dT%H:%M:%S%z")
+            data["date"] = self.parse_datetime_iso(element[1].text)
+            data["date_updated"] = self.parse_datetime_iso(element[2].text)
             yield Message.Queue, element[4].text, data
diff --git a/gallery_dl/extractor/e621.py b/gallery_dl/extractor/e621.py
index 604fc513..6251f12e 100644
--- a/gallery_dl/extractor/e621.py
+++ b/gallery_dl/extractor/e621.py
@@ -51,8 +51,7 @@ class E621Extractor(danbooru.DanbooruExtractor):
 
             post["filename"] = file["md5"]
             post["extension"] = file["ext"]
-            post["date"] = self.parse_datetime(
-                post["created_at"], "%Y-%m-%dT%H:%M:%S.%f%z")
+            post["date"] = self.parse_datetime_iso(post["created_at"])
 
             post.update(data)
             yield Message.Directory, post
diff --git a/gallery_dl/extractor/exhentai.py b/gallery_dl/extractor/exhentai.py
index e7b2ab9c..2ce35bbd 100644
--- a/gallery_dl/extractor/exhentai.py
+++ b/gallery_dl/extractor/exhentai.py
@@ -258,8 +258,8 @@ class ExhentaiGalleryExtractor(ExhentaiExtractor):
             "_"            : extr('<div id="gdc"><div class="cs ct', '"'),
             "eh_category"  : extr('>', '<'),
             "uploader"     : extr('<div id="gdn">', '</div>'),
-            "date"         : self.parse_datetime(extr(
-                '>Posted:</td><td class="gdt2">', '</td>'), "%Y-%m-%d %H:%M"),
+            "date"         : self.parse_datetime_iso(extr(
+                '>Posted:</td><td class="gdt2">', '</td>')),
             "parent"       : extr(
                 '>Parent:</td><td class="gdt2"><a href="', '"'),
             "expunged"     : "Yes" != extr(
diff --git a/gallery_dl/extractor/furry34.py b/gallery_dl/extractor/furry34.py
index 848b16d2..3673edb0 100644
--- a/gallery_dl/extractor/furry34.py
+++ b/gallery_dl/extractor/furry34.py
@@ -55,8 +55,7 @@ class Furry34Extractor(BooruExtractor):
 
     def _prepare(self, post):
         post.pop("files", None)
-        post["date"] = self.parse_datetime(
-            post["created"], "%Y-%m-%dT%H:%M:%S.%fZ")
+        post["date"] = self.parse_datetime_iso(post["created"])
         post["filename"], _, post["format"] = post["filename"].rpartition(".")
         if "tags" in post:
             post["tags"] = [t["value"] for t in post["tags"]]
diff --git a/gallery_dl/extractor/gelbooru_v01.py b/gallery_dl/extractor/gelbooru_v01.py
index f1178aca..13482721 100644
--- a/gallery_dl/extractor/gelbooru_v01.py
+++ b/gallery_dl/extractor/gelbooru_v01.py
@@ -35,8 +35,7 @@ class GelbooruV01Extractor(booru.BooruExtractor):
         }
 
         post["md5"] = post["file_url"].rpartition("/")[2].partition(".")[0]
-        post["date"] = self.parse_datetime(
-            post["created_at"], "%Y-%m-%d %H:%M:%S")
+        post["date"] = self.parse_datetime_iso(post["created_at"])
 
         return post
 
diff --git a/gallery_dl/extractor/girlswithmuscle.py b/gallery_dl/extractor/girlswithmuscle.py
index 34d46160..23773875 100644
--- a/gallery_dl/extractor/girlswithmuscle.py
+++ b/gallery_dl/extractor/girlswithmuscle.py
@@ -101,9 +101,8 @@ class GirlswithmusclePostExtractor(GirlswithmuscleExtractor):
             "model": model,
             "model_list": self._parse_model_list(model),
             "tags": text.split_html(tags)[1::2],
-            "date": self.parse_datetime(
-                text.extr(page, 'class="hover-time"  title="', '"')[:19],
-                "%Y-%m-%d %H:%M:%S"),
+            "date": self.parse_datetime_iso(text.extr(
+                page, 'class="hover-time"  title="', '"')[:19]),
             "is_favorite": self._parse_is_favorite(page),
             "source_filename": source,
             "uploader": uploader,
diff --git a/gallery_dl/extractor/hentaihand.py b/gallery_dl/extractor/hentaihand.py
index 2510f0ae..2ca462e0 100644
--- a/gallery_dl/extractor/hentaihand.py
+++ b/gallery_dl/extractor/hentaihand.py
@@ -35,8 +35,7 @@ class HentaihandGalleryExtractor(GalleryExtractor):
             "language"   : info["language"]["name"],
             "lang"       : util.language_to_code(info["language"]["name"]),
             "tags"       : [t["slug"] for t in info["tags"]],
-            "date"       : self.parse_datetime(
-                info["uploaded_at"], "%Y-%m-%d"),
+            "date"       : self.parse_datetime_iso(info["uploaded_at"]),
         }
         for key in ("artists", "authors", "groups", "characters",
                     "relationships", "parodies"):
diff --git a/gallery_dl/extractor/hitomi.py b/gallery_dl/extractor/hitomi.py
index 56606b89..b05a9a7b 100644
--- a/gallery_dl/extractor/hitomi.py
+++ b/gallery_dl/extractor/hitomi.py
@@ -84,7 +84,7 @@ class HitomiGalleryExtractor(HitomiExtractor, GalleryExtractor):
             "type"      : info["type"].capitalize(),
             "language"  : language,
             "lang"      : util.language_to_code(language),
-            "date"      : self.parse_datetime(date, "%Y-%m-%d %H:%M:%S%z"),
+            "date"      : self.parse_datetime_iso(date),
             "tags"      : tags,
             "artist"    : [o["artist"] for o in iget("artists") or ()],
             "group"     : [o["group"] for o in iget("groups") or ()],
diff --git a/gallery_dl/extractor/imagechest.py b/gallery_dl/extractor/imagechest.py
index 59d8c6c5..2191958d 100644
--- a/gallery_dl/extractor/imagechest.py
+++ b/gallery_dl/extractor/imagechest.py
@@ -53,11 +53,9 @@ class ImagechestGalleryExtractor(GalleryExtractor):
     def _metadata_api(self, page):
         post = self.api.post(self.gallery_id)
 
-        post["date"] = self.parse_datetime(
-            post["created"], "%Y-%m-%dT%H:%M:%S.%fZ")
+        post["date"] = self.parse_datetime_iso(post["created"])
         for img in post["images"]:
-            img["date"] = self.parse_datetime(
-                img["created"], "%Y-%m-%dT%H:%M:%S.%fZ")
+            img["date"] = self.parse_datetime_iso(img["created"])
 
         post["gallery_id"] = self.gallery_id
         post.pop("image_count", None)
diff --git a/gallery_dl/extractor/imgbb.py b/gallery_dl/extractor/imgbb.py
index 19e2a533..0d8b67d5 100644
--- a/gallery_dl/extractor/imgbb.py
+++ b/gallery_dl/extractor/imgbb.py
@@ -159,8 +159,7 @@ class ImgbbImageExtractor(ImgbbExtractor):
             "width" : text.parse_int(extr('"og:image:width" content="', '"')),
             "height": text.parse_int(extr('"og:image:height" content="', '"')),
             "album" : extr("Added to <a", "</a>"),
-            "date"  : self.parse_datetime(extr(
-                '<span title="', '"'), "%Y-%m-%d %H:%M:%S"),
+            "date"  : self.parse_datetime_iso(extr('<span title="', '"')),
             "user"  : util.json_loads(extr(
                 "CHV.obj.resource=", "};") + "}").get("user"),
         }
diff --git a/gallery_dl/extractor/inkbunny.py b/gallery_dl/extractor/inkbunny.py
index e0fff57a..46ef232f 100644
--- a/gallery_dl/extractor/inkbunny.py
+++ b/gallery_dl/extractor/inkbunny.py
@@ -35,8 +35,8 @@ class InkbunnyExtractor(Extractor):
 
         for post in self.posts():
             post.update(metadata)
-            post["date"] = self.parse_datetime(
-                post["create_datetime"] + "00", "%Y-%m-%d %H:%M:%S.%f%z")
+            post["date"] = self.parse_datetime_iso(
+                post["create_datetime"][:19])
             post["tags"] = [kw["keyword_name"] for kw in post["keywords"]]
             post["ratings"] = [r["name"] for r in post["ratings"]]
             files = post["files"]
@@ -52,8 +52,8 @@ class InkbunnyExtractor(Extractor):
             for post["num"], file in enumerate(files, 1):
                 post.update(file)
                 post["deleted"] = (file["deleted"] == "t")
-                post["date"] = self.parse_datetime(
-                    file["create_datetime"] + "00", "%Y-%m-%d %H:%M:%S.%f%z")
+                post["date"] = self.parse_datetime_iso(
+                    file["create_datetime"][:19])
                 text.nameext_from_url(file["file_name"], post)
 
                 url = file["file_url_full"]
diff --git a/gallery_dl/extractor/issuu.py b/gallery_dl/extractor/issuu.py
index c463492d..5486995b 100644
--- a/gallery_dl/extractor/issuu.py
+++ b/gallery_dl/extractor/issuu.py
@@ -36,8 +36,8 @@ class IssuuPublicationExtractor(IssuuBase, GalleryExtractor):
             '{"":' + data.replace('\\"', '"')))
 
         doc = data["initialDocumentData"]["document"]
-        doc["date"] = self.parse_datetime(
-            doc["originalPublishDateInISOString"], "%Y-%m-%dT%H:%M:%S.%fZ")
+        doc["date"] = self.parse_datetime_iso(
+            doc["originalPublishDateInISOString"])
 
         self.count = text.parse_int(doc["pageCount"])
         self.base = (f"https://image.isu.pub/{doc['revisionId']}-"
diff --git a/gallery_dl/extractor/itaku.py b/gallery_dl/extractor/itaku.py
index 77ebecb4..fb89c20c 100644
--- a/gallery_dl/extractor/itaku.py
+++ b/gallery_dl/extractor/itaku.py
@@ -32,8 +32,7 @@ class ItakuExtractor(Extractor):
     def items(self):
         if images := self.images():
             for image in images:
-                image["date"] = self.parse_datetime(
-                    image["date_added"], "%Y-%m-%dT%H:%M:%S.%fZ")
+                image["date"] = self.parse_datetime_iso(image["date_added"])
                 for category, tags in image.pop("categorized_tags").items():
                     image[f"tags_{category.lower()}"] = [
                         t["name"] for t in tags]
@@ -60,15 +59,14 @@ class ItakuExtractor(Extractor):
             for post in posts:
                 images = post.pop("gallery_images") or ()
                 post["count"] = len(images)
-                post["date"] = self.parse_datetime(
-                    post["date_added"], "%Y-%m-%dT%H:%M:%S.%fZ")
+                post["date"] = self.parse_datetime_iso(post["date_added"])
                 post["tags"] = [t["name"] for t in post["tags"]]
 
                 yield Message.Directory, post
                 for post["num"], image in enumerate(images, 1):
                     post["file"] = image
-                    image["date"] = self.parse_datetime(
-                        image["date_added"], "%Y-%m-%dT%H:%M:%S.%fZ")
+                    image["date"] = self.parse_datetime_iso(
+                        image["date_added"])
 
                     url = image["image"]
                     yield Message.Url, url, text.nameext_from_url(url, post)
diff --git a/gallery_dl/extractor/iwara.py b/gallery_dl/extractor/iwara.py
index e0496347..9cb0d640 100644
--- a/gallery_dl/extractor/iwara.py
+++ b/gallery_dl/extractor/iwara.py
@@ -122,10 +122,10 @@ class IwaraExtractor(Extractor):
             info["file_id"] = file_info.get("id")
             info["filename"] = filename
             info["extension"] = extension
-            info["date"] = self.parse_datetime(
-                file_info.get("createdAt"), "%Y-%m-%dT%H:%M:%S.%fZ")
-            info["date_updated"] = self.parse_datetime(
-                file_info.get("updatedAt"), "%Y-%m-%dT%H:%M:%S.%fZ")
+            info["date"] = self.parse_datetime_iso(
+                file_info.get("createdAt"))
+            info["date_updated"] = self.parse_datetime_iso(
+                file_info.get("updatedAt"))
             info["mime"] = file_info.get("mime")
             info["size"] = file_info.get("size")
             info["width"] = file_info.get("width")
@@ -144,8 +144,7 @@ class IwaraExtractor(Extractor):
             "status" : user.get("status"),
             "role"   : user.get("role"),
             "premium": user.get("premium"),
-            "date"   : self.parse_datetime(
-                user.get("createdAt"), "%Y-%m-%dT%H:%M:%S.000Z"),
+            "date"   : self.parse_datetime_iso(user.get("createdAt")),
             "description": profile.get("body"),
         }
 
diff --git a/gallery_dl/extractor/kabeuchi.py b/gallery_dl/extractor/kabeuchi.py
index 49dba3ac..14cef8b5 100644
--- a/gallery_dl/extractor/kabeuchi.py
+++ b/gallery_dl/extractor/kabeuchi.py
@@ -32,8 +32,7 @@ class KabeuchiUserExtractor(Extractor):
             if post.get("is_ad") or not post["image1"]:
                 continue
 
-            post["date"] = self.parse_datetime(
-                post["created_at"], "%Y-%m-%d %H:%M:%S")
+            post["date"] = self.parse_datetime_iso(post["created_at"])
             yield Message.Directory, post
 
             for key in keys:
diff --git a/gallery_dl/extractor/kemono.py b/gallery_dl/extractor/kemono.py
index 441f92a5..5ba978c6 100644
--- a/gallery_dl/extractor/kemono.py
+++ b/gallery_dl/extractor/kemono.py
@@ -238,7 +238,7 @@ class KemonoExtractor(Extractor):
     def _parse_datetime(self, date_string):
         if len(date_string) > 19:
             date_string = date_string[:19]
-        return self.parse_datetime(date_string, "%Y-%m-%dT%H:%M:%S")
+        return self.parse_datetime_iso(date_string)
 
     def _revisions(self, posts):
         return itertools.chain.from_iterable(
diff --git a/gallery_dl/extractor/lensdump.py b/gallery_dl/extractor/lensdump.py
index 1f81407d..5435c99f 100644
--- a/gallery_dl/extractor/lensdump.py
+++ b/gallery_dl/extractor/lensdump.py
@@ -119,8 +119,7 @@ class LensdumpImageExtractor(LensdumpBase, Extractor):
                 'property="image:width" content="', '"')),
             "height": text.parse_int(extr(
                 'property="image:height" content="', '"')),
-            "date"  : self.parse_datetime(extr(
-                '<span title="', '"'), "%Y-%m-%d %H:%M:%S"),
+            "date"  : self.parse_datetime_iso(extr('<span title="', '"')),
         }
 
         text.nameext_from_url(data["url"], data)
diff --git a/gallery_dl/extractor/madokami.py b/gallery_dl/extractor/madokami.py
index 3d5dc0ca..e9fc4f93 100644
--- a/gallery_dl/extractor/madokami.py
+++ b/gallery_dl/extractor/madokami.py
@@ -47,8 +47,7 @@ class MadokamiMangaExtractor(MadokamiExtractor):
                 "path": text.unescape(extr('href="', '"')),
                 "chapter_string": text.unescape(extr(">", "<")),
                 "size": text.parse_bytes(extr("<td>", "</td>")),
-                "date": self.parse_datetime(
-                    extr("<td>", "</td>").strip(), "%Y-%m-%d %H:%M"),
+                "date": self.parse_datetime_iso(extr("<td>", "</td>").strip()),
             })
 
         if self.config("chapter-reverse"):
diff --git a/gallery_dl/extractor/manganelo.py b/gallery_dl/extractor/manganelo.py
index 75ef0ab1..3d88b2d0 100644
--- a/gallery_dl/extractor/manganelo.py
+++ b/gallery_dl/extractor/manganelo.py
@@ -50,10 +50,10 @@ class ManganeloChapterExtractor(ManganeloExtractor, ChapterExtractor):
         extr = text.extract_from(page)
 
         data = {
-            "date"        : self.parse_datetime(extr(
-                '"datePublished": "', '"')[:19], "%Y-%m-%dT%H:%M:%S"),
-            "date_updated": self.parse_datetime(extr(
-                '"dateModified": "', '"')[:19], "%Y-%m-%dT%H:%M:%S"),
+            "date"        : self.parse_datetime_iso(extr(
+                '"datePublished": "', '"')[:19]),
+            "date_updated": self.parse_datetime_iso(extr(
+                '"dateModified": "', '"')[:19]),
             "manga_id"    : text.parse_int(extr("comic_id =", ";")),
             "chapter_id"  : text.parse_int(extr("chapter_id =", ";")),
             "manga"       : extr("comic_name =", ";").strip('" '),
diff --git a/gallery_dl/extractor/mangataro.py b/gallery_dl/extractor/mangataro.py
index 77c07743..029bc2e9 100644
--- a/gallery_dl/extractor/mangataro.py
+++ b/gallery_dl/extractor/mangataro.py
@@ -40,10 +40,8 @@ class MangataroChapterExtractor(MangataroBase, ChapterExtractor):
             "chapter_minor": str(round(minor, 5))[1:] if minor else "",
             "chapter_id"   : text.parse_int(chapter_id),
             "chapter_url"  : comic["url"],
-            "date"         : self.parse_datetime(
-                comic["datePublished"], "%Y-%m-%dT%H:%M:%S%z"),
-            "date_updated" : self.parse_datetime(
-                comic["dateModified"], "%Y-%m-%dT%H:%M:%S%z"),
+            "date"         : self.parse_datetime_iso(comic["datePublished"]),
+            "date_updated" : self.parse_datetime_iso(comic["dateModified"]),
         }
 
     def images(self, page):
diff --git a/gallery_dl/extractor/misskey.py b/gallery_dl/extractor/misskey.py
index f58560c8..628f7e3f 100644
--- a/gallery_dl/extractor/misskey.py
+++ b/gallery_dl/extractor/misskey.py
@@ -48,13 +48,11 @@ class MisskeyExtractor(BaseExtractor):
             note["instance"] = self.instance
             note["instance_remote"] = note["user"]["host"]
             note["count"] = len(files)
-            note["date"] = self.parse_datetime(
-                note["createdAt"], "%Y-%m-%dT%H:%M:%S.%f%z")
+            note["date"] = self.parse_datetime_iso(note["createdAt"])
 
             yield Message.Directory, note
             for note["num"], file in enumerate(files, 1):
-                file["date"] = self.parse_datetime(
-                    file["createdAt"], "%Y-%m-%dT%H:%M:%S.%f%z")
+                file["date"] = self.parse_datetime_iso(file["createdAt"])
                 note["file"] = file
                 url = file["url"]
                 yield Message.Url, url, text.nameext_from_url(url, note)
diff --git a/gallery_dl/extractor/naverchzzk.py b/gallery_dl/extractor/naverchzzk.py
index 55fbf75e..e1dc1362 100644
--- a/gallery_dl/extractor/naverchzzk.py
+++ b/gallery_dl/extractor/naverchzzk.py
@@ -38,10 +38,10 @@ class NaverChzzkExtractor(Extractor):
             for data["num"], file in enumerate(files, 1):
                 if extra := file.get("extraJson"):
                     file.update(util.json_loads(extra))
-                file["date"] = self.parse_datetime(
-                    file["createdDate"], "%Y-%m-%dT%H:%M:%S.%f%z")
-                file["date_updated"] = self.parse_datetime(
-                    file["updatedDate"], "%Y-%m-%dT%H:%M:%S.%f%z")
+                file["date"] = self.parse_datetime_iso(
+                    file["createdDate"])
+                file["date_updated"] = self.parse_datetime_iso(
+                    file["updatedDate"])
                 data["file"] = file
                 url = file["attachValue"]
                 yield Message.Url, url, text.nameext_from_url(url, data)
diff --git a/gallery_dl/extractor/nekohouse.py b/gallery_dl/extractor/nekohouse.py
index 77298b0f..f865cbe1 100644
--- a/gallery_dl/extractor/nekohouse.py
+++ b/gallery_dl/extractor/nekohouse.py
@@ -59,8 +59,8 @@ class NekohousePostExtractor(NekohouseExtractor):
                 'class="scrape__user-name', '</').rpartition(">")[2].strip()),
             "title"   : text.unescape(extr(
                 'class="scrape__title', '</').rpartition(">")[2]),
-            "date"   : self.parse_datetime(extr(
-                'datetime="', '"')[:19], "%Y-%m-%d %H:%M:%S"),
+            "date"   : self.parse_datetime_iso(extr(
+                'datetime="', '"')[:19]),
             "content": text.unescape(extr(
                 'class="scrape__content">', "</div>").strip()),
         }
diff --git a/gallery_dl/extractor/nozomi.py b/gallery_dl/extractor/nozomi.py
index b4ef1741..6a78a47a 100644
--- a/gallery_dl/extractor/nozomi.py
+++ b/gallery_dl/extractor/nozomi.py
@@ -9,7 +9,7 @@
 """Extractors for https://nozomi.la/"""
 
 from .common import Extractor, Message
-from .. import text
+from .. import text, dt
 
 
 def decode_nozomi(n):
@@ -49,10 +49,9 @@ class NozomiExtractor(Extractor):
             post["character"] = self._list(post.get("character"))
 
             try:
-                post["date"] = self.parse_datetime(
-                    post["date"] + ":00", "%Y-%m-%d %H:%M:%S%z")
+                post["date"] = dt.parse_iso(post["date"] + ":00")
             except Exception:
-                post["date"] = None
+                post["date"] = dt.NONE
 
             post.update(data)
 
diff --git a/gallery_dl/extractor/paheal.py b/gallery_dl/extractor/paheal.py
index cf73db83..c87a69e7 100644
--- a/gallery_dl/extractor/paheal.py
+++ b/gallery_dl/extractor/paheal.py
@@ -53,8 +53,7 @@ class PahealExtractor(Extractor):
                          extr("<source src='", "'")),
             "uploader": text.unquote(extr(
                 "class='username' href='/user/", "'")),
-            "date"    : self.parse_datetime(
-                extr("datetime='", "'"), "%Y-%m-%dT%H:%M:%S%z"),
+            "date"    : self.parse_datetime_iso(extr("datetime='", "'")),
             "source"  : text.unescape(text.extr(
                 extr(">Source Link<", "</td>"), "href='", "'")),
         }
diff --git a/gallery_dl/extractor/patreon.py b/gallery_dl/extractor/patreon.py
index b4f0cdc4..760a7e1d 100644
--- a/gallery_dl/extractor/patreon.py
+++ b/gallery_dl/extractor/patreon.py
@@ -177,8 +177,7 @@ class PatreonExtractor(Extractor):
             post, included, "attachments")
         attr["attachments_media"] = self._files(
             post, included, "attachments_media")
-        attr["date"] = self.parse_datetime(
-            attr["published_at"], "%Y-%m-%dT%H:%M:%S.%f%z")
+        attr["date"] = self.parse_datetime_iso(attr["published_at"])
 
         try:
             attr["campaign"] = (included["campaign"][
@@ -226,8 +225,7 @@ class PatreonExtractor(Extractor):
         user = response.json()["data"]
         attr = user["attributes"]
         attr["id"] = user["id"]
-        attr["date"] = self.parse_datetime(
-            attr["created"], "%Y-%m-%dT%H:%M:%S.%f%z")
+        attr["date"] = self.parse_datetime_iso(attr["created"])
         return attr
 
     def _collection(self, collection_id):
@@ -236,8 +234,7 @@ class PatreonExtractor(Extractor):
         coll = data["data"]
         attr = coll["attributes"]
         attr["id"] = coll["id"]
-        attr["date"] = self.parse_datetime(
-            attr["created_at"], "%Y-%m-%dT%H:%M:%S.%f%z")
+        attr["date"] = self.parse_datetime_iso(attr["created_at"])
         return attr
 
     def _filename(self, url):
diff --git a/gallery_dl/extractor/pexels.py b/gallery_dl/extractor/pexels.py
index ca482cc6..34dbcbd0 100644
--- a/gallery_dl/extractor/pexels.py
+++ b/gallery_dl/extractor/pexels.py
@@ -35,8 +35,7 @@ class PexelsExtractor(Extractor):
                 post["type"] = attr["type"]
 
             post.update(metadata)
-            post["date"] = self.parse_datetime(
-                post["created_at"][:-5], "%Y-%m-%dT%H:%M:%S")
+            post["date"] = self.parse_datetime_iso(post["created_at"][:-5])
 
             if "image" in post:
                 url, _, query = post["image"]["download_link"].partition("?")
diff --git a/gallery_dl/extractor/philomena.py b/gallery_dl/extractor/philomena.py
index 9407acd2..7665250a 100644
--- a/gallery_dl/extractor/philomena.py
+++ b/gallery_dl/extractor/philomena.py
@@ -36,8 +36,7 @@ class PhilomenaExtractor(BooruExtractor):
         return url
 
     def _prepare(self, post):
-        post["date"] = self.parse_datetime(
-            post["created_at"][:19], "%Y-%m-%dT%H:%M:%S")
+        post["date"] = self.parse_datetime_iso(post["created_at"][:19])
 
 
 BASE_PATTERN = PhilomenaExtractor.update({
diff --git a/gallery_dl/extractor/photovogue.py b/gallery_dl/extractor/photovogue.py
index 6b38a983..16d9a7f5 100644
--- a/gallery_dl/extractor/photovogue.py
+++ b/gallery_dl/extractor/photovogue.py
@@ -29,8 +29,7 @@ class PhotovogueUserExtractor(Extractor):
         for photo in self.photos():
             url = photo["gallery_image"]
             photo["title"] = photo["title"].strip()
-            photo["date"] = self.parse_datetime(
-                photo["date"], "%Y-%m-%dT%H:%M:%S.%f%z")
+            photo["date"] = self.parse_datetime_iso(photo["date"])
 
             yield Message.Directory, photo
             yield Message.Url, url, text.nameext_from_url(url, photo)
diff --git a/gallery_dl/extractor/picarto.py b/gallery_dl/extractor/picarto.py
index a5168aa6..3c49452b 100644
--- a/gallery_dl/extractor/picarto.py
+++ b/gallery_dl/extractor/picarto.py
@@ -29,8 +29,7 @@ class PicartoGalleryExtractor(Extractor):
 
     def items(self):
         for post in self.posts():
-            post["date"] = self.parse_datetime(
-                post["created_at"], "%Y-%m-%d %H:%M:%S")
+            post["date"] = self.parse_datetime_iso(post["created_at"])
             variations = post.pop("variations", ())
             yield Message.Directory, post
 
diff --git a/gallery_dl/extractor/piczel.py b/gallery_dl/extractor/piczel.py
index becdb327..3f43a499 100644
--- a/gallery_dl/extractor/piczel.py
+++ b/gallery_dl/extractor/piczel.py
@@ -26,8 +26,7 @@ class PiczelExtractor(Extractor):
     def items(self):
         for post in self.posts():
             post["tags"] = [t["title"] for t in post["tags"] if t["title"]]
-            post["date"] = self.parse_datetime(
-                post["created_at"], "%Y-%m-%dT%H:%M:%S.%f%z")
+            post["date"] = self.parse_datetime_iso(post["created_at"])
 
             if post["multi"]:
                 images = post["images"]
diff --git a/gallery_dl/extractor/pillowfort.py b/gallery_dl/extractor/pillowfort.py
index ed535180..637b0b9a 100644
--- a/gallery_dl/extractor/pillowfort.py
+++ b/gallery_dl/extractor/pillowfort.py
@@ -48,8 +48,7 @@ class PillowfortExtractor(Extractor):
                 for url in inline(post["content"]):
                     files.append({"url": url})
 
-            post["date"] = self.parse_datetime(
-                post["created_at"], "%Y-%m-%dT%H:%M:%S.%f%z")
+            post["date"] = self.parse_datetime_iso(post["created_at"])
             post["post_id"] = post.pop("id")
             post["count"] = len(files)
             yield Message.Directory, post
@@ -76,8 +75,7 @@ class PillowfortExtractor(Extractor):
                 if "id" not in file:
                     post["id"] = post["hash"]
                 if "created_at" in file:
-                    post["date"] = self.parse_datetime(
-                        file["created_at"], "%Y-%m-%dT%H:%M:%S.%f%z")
+                    post["date"] = self.parse_datetime_iso(file["created_at"])
 
                 yield msgtype, url, post
 
diff --git a/gallery_dl/extractor/pixeldrain.py b/gallery_dl/extractor/pixeldrain.py
index 78b004c7..6df855e6 100644
--- a/gallery_dl/extractor/pixeldrain.py
+++ b/gallery_dl/extractor/pixeldrain.py
@@ -24,10 +24,6 @@ class PixeldrainExtractor(Extractor):
         if api_key := self.config("api-key"):
             self.session.auth = util.HTTPBasicAuth("", api_key)
 
-    def _parse_datetime(self, date_string):
-        return self.parse_datetime(
-            date_string, "%Y-%m-%dT%H:%M:%S.%fZ")
-
 
 class PixeldrainFileExtractor(PixeldrainExtractor):
     """Extractor for pixeldrain files"""
diff --git a/gallery_dl/extractor/pornhub.py b/gallery_dl/extractor/pornhub.py
index 38905351..fbe14dd5 100644
--- a/gallery_dl/extractor/pornhub.py
+++ b/gallery_dl/extractor/pornhub.py
@@ -150,8 +150,7 @@ class PornhubGifExtractor(PornhubExtractor):
             "tags" : extr("data-context-tag='", "'").split(","),
             "title": extr('"name": "', '"'),
             "url"  : extr('"contentUrl": "', '"'),
-            "date" : self.parse_datetime(
-                extr('"uploadDate": "', '"'), "%Y-%m-%d"),
+            "date" : self.parse_datetime_iso(extr('"uploadDate": "', '"')),
             "viewkey"  : extr('From this video: '
                               '<a href="/view_video.php?viewkey=', '"'),
             "timestamp": extr('lass="directLink tstamp" rel="nofollow">', '<'),
diff --git a/gallery_dl/extractor/rule34vault.py b/gallery_dl/extractor/rule34vault.py
index b5681207..74d79d3f 100644
--- a/gallery_dl/extractor/rule34vault.py
+++ b/gallery_dl/extractor/rule34vault.py
@@ -36,8 +36,7 @@ class Rule34vaultExtractor(BooruExtractor):
 
     def _prepare(self, post):
         post.pop("files", None)
-        post["date"] = self.parse_datetime(
-            post["created"], "%Y-%m-%dT%H:%M:%S.%fZ")
+        post["date"] = self.parse_datetime_iso(post["created"])
         if "tags" in post:
             post["tags"] = [t["value"] for t in post["tags"]]
 
diff --git a/gallery_dl/extractor/rule34xyz.py b/gallery_dl/extractor/rule34xyz.py
index bd60d01c..8174313a 100644
--- a/gallery_dl/extractor/rule34xyz.py
+++ b/gallery_dl/extractor/rule34xyz.py
@@ -68,8 +68,7 @@ class Rule34xyzExtractor(BooruExtractor):
 
     def _prepare(self, post):
         post.pop("files", None)
-        post["date"] = self.parse_datetime(
-            post["created"], "%Y-%m-%dT%H:%M:%S.%fZ")
+        post["date"] = self.parse_datetime_iso(post["created"])
         post["filename"], _, post["format"] = post["filename"].rpartition(".")
         if "tags" in post:
             post["tags"] = [t["value"] for t in post["tags"]]
diff --git a/gallery_dl/extractor/s3ndpics.py b/gallery_dl/extractor/s3ndpics.py
index 687dbe38..87d91a6f 100644
--- a/gallery_dl/extractor/s3ndpics.py
+++ b/gallery_dl/extractor/s3ndpics.py
@@ -30,10 +30,8 @@ class S3ndpicsExtractor(Extractor):
         for post in self.posts():
             post["id"] = post.pop("_id", None)
             post["user"] = post.pop("userId", None)
-            post["date"] = self.parse_datetime(
-                post["createdAt"], "%Y-%m-%dT%H:%M:%S.%fZ")
-            post["date_updated"] = self.parse_datetime(
-                post["updatedAt"], "%Y-%m-%dT%H:%M:%S.%fZ")
+            post["date"] = self.parse_datetime_iso(post["createdAt"])
+            post["date_updated"] = self.parse_datetime_iso(post["updatedAt"])
 
             files = post.pop("files", ())
             post["count"] = len(files)
diff --git a/gallery_dl/extractor/slideshare.py b/gallery_dl/extractor/slideshare.py
index b104e873..1bb70ed9 100644
--- a/gallery_dl/extractor/slideshare.py
+++ b/gallery_dl/extractor/slideshare.py
@@ -39,8 +39,8 @@ class SlidesharePresentationExtractor(GalleryExtractor):
             "description" : slideshow["description"].strip(),
             "views"       : slideshow["views"],
             "likes"       : slideshow["likes"],
-            "date"        : self.parse_datetime(
-                slideshow["createdAt"], "%Y-%m-%d %H:%M:%S %Z"),
+            "date"        : self.parse_datetime_iso(
+                slideshow["createdAt"][:19]),
         }
 
     def images(self, page):
diff --git a/gallery_dl/extractor/szurubooru.py b/gallery_dl/extractor/szurubooru.py
index 197012f0..2bf4a61e 100644
--- a/gallery_dl/extractor/szurubooru.py
+++ b/gallery_dl/extractor/szurubooru.py
@@ -57,8 +57,7 @@ class SzurubooruExtractor(booru.BooruExtractor):
         return url
 
     def _prepare(self, post):
-        post["date"] = self.parse_datetime(
-            post["creationTime"], "%Y-%m-%dT%H:%M:%S.%fZ")
+        post["date"] = self.parse_datetime_iso(post["creationTime"])
 
         tags = []
         tags_categories = collections.defaultdict(list)
diff --git a/gallery_dl/extractor/thehentaiworld.py b/gallery_dl/extractor/thehentaiworld.py
index aed22836..47cc4329 100644
--- a/gallery_dl/extractor/thehentaiworld.py
+++ b/gallery_dl/extractor/thehentaiworld.py
@@ -56,8 +56,7 @@ class ThehentaiworldExtractor(Extractor):
             "id"      : text.parse_int(extr(" postid-", " ")),
             "slug"    : extr(" post-", '"'),
             "tags"    : extr('id="tagsHead">', "</ul>"),
-            "date"    : self.parse_datetime(extr(
-                "<li>Posted: ", "<"), "%Y-%m-%d"),
+            "date"    : self.parse_datetime_iso(extr("<li>Posted: ", "<")),
         }
 
         if (c := url[27]) == "v":
diff --git a/gallery_dl/extractor/twibooru.py b/gallery_dl/extractor/twibooru.py
index ec862fe2..4558e212 100644
--- a/gallery_dl/extractor/twibooru.py
+++ b/gallery_dl/extractor/twibooru.py
@@ -37,8 +37,7 @@ class TwibooruExtractor(BooruExtractor):
         return post["view_url"]
 
     def _prepare(self, post):
-        post["date"] = self.parse_datetime(
-            post["created_at"], "%Y-%m-%dT%H:%M:%S.%fZ")
+        post["date"] = self.parse_datetime_iso(post["created_at"])
 
         if "name" in post:
             name, sep, rest = post["name"].rpartition(".")
@@ -146,8 +145,8 @@ class TwibooruAPI():
                 return response.json()
 
             if response.status_code == 429:
-                until = self.parse_datetime(
-                    response.headers["X-RL-Reset"], "%Y-%m-%d %H:%M:%S %Z")
+                until = self.parse_datetime_iso(
+                    response.headers["X-RL-Reset"][:19])
                 # wait an extra minute, just to be safe
                 self.extractor.wait(until=until, adjust=60.0)
                 continue
diff --git a/gallery_dl/extractor/vanillarock.py b/gallery_dl/extractor/vanillarock.py
index e0834b62..a6a10ff3 100644
--- a/gallery_dl/extractor/vanillarock.py
+++ b/gallery_dl/extractor/vanillarock.py
@@ -47,8 +47,8 @@ class VanillarockPostExtractor(VanillarockExtractor):
             "count": len(imgs),
             "title": text.unescape(name),
             "path" : self.path.strip("/"),
-            "date" : self.parse_datetime(extr(
-                '<div class="date">', '</div>'), "%Y-%m-%d %H:%M"),
+            "date" : self.parse_datetime_iso(extr(
+                '<div class="date">', '</div>')),
             "tags" : text.split_html(extr(
                 '<div class="cat-tag">', '</div>'))[::2],
         }
diff --git a/gallery_dl/extractor/wallhaven.py b/gallery_dl/extractor/wallhaven.py
index 861d0c99..623de8bf 100644
--- a/gallery_dl/extractor/wallhaven.py
+++ b/gallery_dl/extractor/wallhaven.py
@@ -43,8 +43,7 @@ class WallhavenExtractor(Extractor):
         wp["url"] = wp.pop("path")
         if "tags" in wp:
             wp["tags"] = [t["name"] for t in wp["tags"]]
-        wp["date"] = self.parse_datetime(
-            wp.pop("created_at"), "%Y-%m-%d %H:%M:%S")
+        wp["date"] = self.parse_datetime_iso(wp.pop("created_at"))
         wp["width"] = wp.pop("dimension_x")
         wp["height"] = wp.pop("dimension_y")
         wp["wh_category"] = wp["category"]
diff --git a/gallery_dl/extractor/weebcentral.py b/gallery_dl/extractor/weebcentral.py
index cddceb76..c5496e32 100644
--- a/gallery_dl/extractor/weebcentral.py
+++ b/gallery_dl/extractor/weebcentral.py
@@ -127,8 +127,8 @@ class WeebcentralMangaExtractor(WeebcentralBase, MangaExtractor):
                 "chapter"      : text.parse_int(chapter),
                 "chapter_minor": sep + minor,
                 "chapter_type" : type,
-                "date"         : self.parse_datetime(
-                    extr(' datetime="', '"')[:-5], "%Y-%m-%dT%H:%M:%S"),
+                "date"         : self.parse_datetime_iso(extr(
+                    ' datetime="', '"')[:-5]),
             }
             chapter.update(data)
             results.append((base + chapter_id, chapter))
diff --git a/gallery_dl/extractor/wikifeet.py b/gallery_dl/extractor/wikifeet.py
index 7c168e9e..a07fd840 100644
--- a/gallery_dl/extractor/wikifeet.py
+++ b/gallery_dl/extractor/wikifeet.py
@@ -34,8 +34,8 @@ class WikifeetGalleryExtractor(GalleryExtractor):
             "celeb"     : self.celeb,
             "type"      : self.type,
             "birthplace": text.unescape(extr('"bplace":"', '"')),
-            "birthday"  : self.parse_datetime(text.unescape(
-                extr('"bdate":"', '"'))[:10], "%Y-%m-%d"),
+            "birthday"  : self.parse_datetime_iso(text.unescape(extr(
+                '"bdate":"', '"'))[:10]),
             "shoesize"  : text.unescape(extr('"ssize":', ',')),
             "rating"    : text.parse_float(extr('"score":', ',')),
             "celebrity" : text.unescape(extr('"cname":"', '"')),
diff --git a/gallery_dl/extractor/wikimedia.py b/gallery_dl/extractor/wikimedia.py
index 83220889..040e4f6a 100644
--- a/gallery_dl/extractor/wikimedia.py
+++ b/gallery_dl/extractor/wikimedia.py
@@ -75,8 +75,7 @@ class WikimediaExtractor(BaseExtractor):
             for m in image["commonmetadata"] or ()}
 
         text.nameext_from_url(image["canonicaltitle"].partition(":")[2], image)
-        image["date"] = self.parse_datetime(
-            image["timestamp"], "%Y-%m-%dT%H:%M:%SZ")
+        image["date"] = self.parse_datetime_iso(image["timestamp"])
 
     def items(self):
         for info in self._pagination(self.params):
diff --git a/gallery_dl/extractor/yiffverse.py b/gallery_dl/extractor/yiffverse.py
index 33640fc1..f1073ed6 100644
--- a/gallery_dl/extractor/yiffverse.py
+++ b/gallery_dl/extractor/yiffverse.py
@@ -55,8 +55,7 @@ class YiffverseExtractor(BooruExtractor):
 
     def _prepare(self, post):
         post.pop("files", None)
-        post["date"] = self.parse_datetime(
-            post["created"], "%Y-%m-%dT%H:%M:%S.%fZ")
+        post["date"] = self.parse_datetime_iso(post["created"])
         post["filename"], _, post["format"] = post["filename"].rpartition(".")
         if "tags" in post:
             post["tags"] = [t["value"] for t in post["tags"]]