diff --git a/etherdump/commands/index.py b/etherdump/commands/index.py
index a7e553b..0850541 100644
--- a/etherdump/commands/index.py
+++ b/etherdump/commands/index.py
@@ -79,6 +79,7 @@ def main (args):
     pg.add_argument("--updatePeriod", default="daily", help="rss: updatePeriod, possible values: hourly, daily, weekly, monthly, yearly; default: daily")
     pg.add_argument("--updateFrequency", default=1, type=int, help="rss: update frequency within the update period (where 2 would mean twice per period); default: 1")
     pg.add_argument("--generator", default="https://gitlab.com/activearchives/etherdump", help="generator, default: https://gitlab.com/activearchives/etherdump")
+    pg.add_argument("--timestamp", default=None, help="timestamp, default: now (e.g. 2015-12-01 12:30:00)")
 
     args = p.parse_args(args)
 
@@ -115,7 +116,8 @@ def main (args):
     pads = map(fixdates, pads)
     args.pads = pads
 
-    # args.timestamp = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
+    if args.timestamp == None:
+        args.timestamp = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
 
     padurlbase = re.sub(r"api/1.2.9/$", "p/", info["apiurl"])
     if type(padurlbase) == unicode: