Unix timestamp

-22277462400

Mon 21 Jan 1264 12:00:00 AM UTC

Coordinated Universal Time

Mon Jan 21 00:00:00 1264 UTC

In your local timezone

1264-01-21T00:00:00+00:00

ISO 8601

Mon, 21 Jan 1264 00:00:00 +0000

RFC 2822