"Tue, 03 Feb 1970 19:40:44"

Convert date and time to unixtime.

2922044

Another datetime format string at UTC

YYYYMMDD
19700203

Only TIME
19:40:44

General datetime
1970-02-03 19:40:44Z

For Database
1970-02-03 19:40:44

For HTTP1.1
Tue, 03 Feb 1970 19:40:44 GMT

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