diff --git a/docs/configuration.rst b/docs/configuration.rst
index 5bca679f..a8f42576 100644
--- a/docs/configuration.rst
+++ b/docs/configuration.rst
@@ -4252,6 +4252,21 @@ Note
     It is possible to use ``"all"`` instead of listing all values separately.
 
 
+extractor.[misskey].order-posts
+-------------------------------
+Type
+    ``string``
+Default
+    ``"desc"``
+Description
+    Controls the order in which posts are processed.
+
+    ``"asc"`` | ``"reverse"``
+        Ascending order (oldest first)
+    ``"desc"``
+        Descending order (newest first)
+
+
 extractor.[misskey].renotes
 ---------------------------
 Type
diff --git a/docs/gallery-dl.conf b/docs/gallery-dl.conf
index 877a90cd..dee9190c 100644
--- a/docs/gallery-dl.conf
+++ b/docs/gallery-dl.conf
@@ -1094,6 +1094,7 @@
             "date-min"    : null,
             "date-max"    : null,
             "include"     : ["notes"],
+            "order-posts" : "desc",
             "renotes"     : false,
             "replies"     : true,
             "text-posts"  : false
diff --git a/gallery_dl/extractor/misskey.py b/gallery_dl/extractor/misskey.py
index 66dcba65..ca3ae185 100644
--- a/gallery_dl/extractor/misskey.py
+++ b/gallery_dl/extractor/misskey.py
@@ -254,18 +254,33 @@ class MisskeyAPI():
         data["withFiles"] = False if extr.config("text-posts") else True
 
         date_min, date_max = extr._get_date_min_max()
-        if date_min is not None:
-            data["sinceDate"] = date_min * 1000
-            if date_max is None:
-                # ensure notes are returned in descending order
-                # TODO: implement 'order-posts' option
-                data["untilDate"] = (int(dt.to_ts(dt.now())) + 1000) * 1000
-        if date_max is not None:
-            data["untilDate"] = date_max * 1000
+        if (order := extr.config("order-posts")) and \
+                order[0] in ("a", "r"):
+            key = "sinceId"
+            data["sinceDate"] = 1 if date_min is None else date_min * 1000
+            date_stop = None if date_max is None else date_max
+        else:
+            key = "untilId"
+            date_stop = None
+            if date_min is not None:
+                data["sinceDate"] = date_min * 1000
+                if date_max is None:
+                    # ensure notes are returned in descending order
+                    data["untilDate"] = (int(dt.time.time()) + 1000) * 1000
+            if date_max is not None:
+                data["untilDate"] = date_max * 1000
 
         while True:
             notes = self._call(endpoint, data)
             if not notes:
                 return
-            yield from notes
-            data["untilId"] = notes[-1]["id"]
+            elif date_stop is not None and dt.to_ts(dt.parse_iso(
+                    notes[-1]["createdAt"])) > date_stop:
+                for idx, note in enumerate(notes):
+                    if dt.to_ts(dt.parse_iso(note["createdAt"])) > date_stop:
+                        yield from notes[:idx]
+                        return
+            else:
+                yield from notes
+
+            data[key] = notes[-1]["id"]