"Wed, 21 Jan 1970 09:23:13"

Convert date and time to unixtime.

1761793

Another datetime format string at UTC

YYYYMMDD
19700121

Only TIME
09:23:13

General datetime
1970-01-21 09:23:13Z

For Database
1970-01-21 09:23:13

For HTTP1.1
Wed, 21 Jan 1970 09:23:13 GMT

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