Unix timestamp

-23139907200

Mon 22 Sep 1236 12:00:00 AM UTC

Coordinated Universal Time

Mon Sep 22 00:00:00 1236 UTC

In your local timezone

1236-09-22T00:00:00+00:00

ISO 8601

Mon, 22 Sep 1236 00:00:00 +0000

RFC 2822