Unix timestamp

-17678131200

Sat 21 Oct 1409 12:00:00 AM UTC

Coordinated Universal Time

Sat Oct 21 00:00:00 1409 UTC

In your local timezone

1409-10-21T00:00:00+00:00

ISO 8601

Sat, 21 Oct 1409 00:00:00 +0000

RFC 2822