"Wed, 21 Jan 1970 01:01:04"

Convert date and time to unixtime.

1731664

Another datetime format string at UTC

YYYYMMDD
19700121

Only TIME
01:01:04

General datetime
1970-01-21 01:01:04Z

For Database
1970-01-21 01:01:04

For HTTP1.1
Wed, 21 Jan 1970 01:01:04 GMT

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