Unix timestamp

-23990947200

Sun 04 Oct 1209 12:00:00 AM UTC

Coordinated Universal Time

Sun Oct 4 00:00:00 1209 UTC

In your local timezone

1209-10-04T00:00:00+00:00

ISO 8601

Sun, 04 Oct 1209 00:00:00 +0000

RFC 2822