Unix timestamp

-2200262400

Thu 12 Apr 1900 12:00:00 AM UTC

Coordinated Universal Time

Thu Apr 12 00:00:00 1900 UTC

In your local timezone

1900-04-12T00:00:00+00:00

ISO 8601

Thu, 12 Apr 1900 00:00:00 +0000

RFC 2822