"Wed, 21 Jan 1970 04:42:28"

Convert date and time to unixtime.

1744948

Another datetime format string at UTC

YYYYMMDD
19700121

Only TIME
04:42:28

General datetime
1970-01-21 04:42:28Z

For Database
1970-01-21 04:42:28

For HTTP1.1
Wed, 21 Jan 1970 04:42:28 GMT

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