Unix timestamp

-21867148800

Thu 21 Jan 1277 12:00:00 AM UTC

Coordinated Universal Time

Thu Jan 21 00:00:00 1277 UTC

In your local timezone

1277-01-21T00:00:00+00:00

ISO 8601

Thu, 21 Jan 1277 00:00:00 +0000

RFC 2822