"Sun, 11 Jan 1970 00:20:38"

Convert date and time to unixtime.

865238

Another datetime format string at UTC

YYYYMMDD
19700111

Only TIME
00:20:38

General datetime
1970-01-11 00:20:38Z

For Database
1970-01-11 00:20:38

For HTTP1.1
Sun, 11 Jan 1970 00:20:38 GMT

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