diff --git a/dokuWikiDumper/dump/dokuDumper.py b/dokuWikiDumper/dump/dokuDumper.py
index b5c6cce..69d40e6 100644
--- a/dokuWikiDumper/dump/dokuDumper.py
+++ b/dokuWikiDumper/dump/dokuDumper.py
@@ -218,7 +218,7 @@ def dump():
 
     base_url = buildBaseUrl(doku_url)
     dumpDir = url2prefix(doku_url) + '-' + \
-        time.strftime("%Y%m%d") if not args.path else args.path.rstrip('/')
+        time.strftime("%Y%m%d", time.gmtime()) if not args.path else args.path.rstrip('/')
     if args.no_resume:
         if os.path.exists(dumpDir):
             print(
diff --git a/dokuWikiUploader/uploader.py b/dokuWikiUploader/uploader.py
index 43f6072..826ab99 100644
--- a/dokuWikiUploader/uploader.py
+++ b/dokuWikiUploader/uploader.py
@@ -128,7 +128,7 @@ def upload(args: dict):
         "collection": collection,
         "title": "Wiki - " + wikiname,
         "description": description_without_URL, # without URL, to bypass IA's anti-spam.
-        "last-updated-date": time.strftime("%Y-%m-%d"),
+        "last-updated-date": time.strftime("%Y-%m-%d", time.gmtime()),
         "subject": "; ".join(
             keywords_init
         ),  # Keywords should be separated by ; but it doesn't matter much; the alternative is to set one per field with subject[0], subject[1], ...
@@ -213,9 +213,9 @@ def upload(args: dict):
             print("    (add URL back: %s )..." % info.get(INFO_DOKU_URL))
             new_md.update({"description": description_with_URL})
 
-        if item.metadata.get("last-updated-date") != time.strftime("%Y-%m-%d"):
-            print("    (update last-updated-date to %s )..." % time.strftime("%Y-%m-%d"))
-            new_md.update({"last-updated-date": time.strftime("%Y-%m-%d")})
+        if item.metadata.get("last-updated-date") != time.strftime("%Y-%m-%d", time.gmtime()):
+            print("    (update last-updated-date to %s )..." % time.strftime("%Y-%m-%d", time.gmtime()))
+            new_md.update({"last-updated-date": time.strftime("%Y-%m-%d", time.gmtime())})
         
         _subject_full = "; ".join(keywords_full)
         _subject_without_wikiname = "; ".join(keywords_init + [url2prefix(info.get(INFO_DOKU_URL), ascii_slugify=False)])