"Wed, 21 Jan 1970 04:42:27"

Convert date and time to unixtime.

1744947

Another datetime format string at UTC

YYYYMMDD
19700121

Only TIME
04:42:27

General datetime
1970-01-21 04:42:27Z

For Database
1970-01-21 04:42:27

For HTTP1.1
Wed, 21 Jan 1970 04:42:27 GMT

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