Unix timestamp

-23011948800

Fri 12 Oct 1240 12:00:00 AM UTC

Coordinated Universal Time

Fri Oct 12 00:00:00 1240 UTC

In your local timezone

1240-10-12T00:00:00+00:00

ISO 8601

Fri, 12 Oct 1240 00:00:00 +0000

RFC 2822