"Sun, 04 Jan 1970 05:48:31"

Convert date and time to unixtime.

280111

Another datetime format string at UTC

YYYYMMDD
19700104

Only TIME
05:48:31

General datetime
1970-01-04 05:48:31Z

For Database
1970-01-04 05:48:31

For HTTP1.1
Sun, 04 Jan 1970 05:48:31 GMT

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