Unix timestamp

-23314089600

Mon 17 Mar 1231 12:00:00 AM UTC

Coordinated Universal Time

Mon Mar 17 00:00:00 1231 UTC

In your local timezone

1231-03-17T00:00:00+00:00

ISO 8601

Mon, 17 Mar 1231 00:00:00 +0000

RFC 2822