"Sun, 04 Jan 1970 14:40:37"

Convert date and time to unixtime.

312037

Another datetime format string at UTC

YYYYMMDD
19700104

Only TIME
14:40:37

General datetime
1970-01-04 14:40:37Z

For Database
1970-01-04 14:40:37

For HTTP1.1
Sun, 04 Jan 1970 14:40:37 GMT


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