Unix timestamp

-40367894400

Fri 17 Oct 690 12:00:00 AM UTC

Coordinated Universal Time

Fri Oct 17 00:00:00 690 UTC

In your local timezone

0690-10-17T00:00:00+00:00

ISO 8601

Fri, 17 Oct 0690 00:00:00 +0000

RFC 2822