"Mon, 16 Feb 1970 12:53:57"

Convert date and time to unixtime.

4020837

Another datetime format string at UTC

YYYYMMDD
19700216

Only TIME
12:53:57

General datetime
1970-02-16 12:53:57Z

For Database
1970-02-16 12:53:57

For HTTP1.1
Mon, 16 Feb 1970 12:53:57 GMT

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