"Tue, 13 Jan 1970 11:21:15"

Convert date and time to unixtime.

1077675

Another datetime format string at UTC

YYYYMMDD
19700113

Only TIME
11:21:15

General datetime
1970-01-13 11:21:15Z

For Database
1970-01-13 11:21:15

For HTTP1.1
Tue, 13 Jan 1970 11:21:15 GMT

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