"Fri, 02 Jan 1970 14:37:20"

Convert date and time to unixtime.

139040

Another datetime format string at UTC

YYYYMMDD
19700102

Only TIME
14:37:20

General datetime
1970-01-02 14:37:20Z

For Database
1970-01-02 14:37:20

For HTTP1.1
Fri, 02 Jan 1970 14:37:20 GMT

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