"Wed, 21 Jan 1970 14:57:34"

Convert date and time to unixtime.

1781854

Another datetime format string at UTC

YYYYMMDD
19700121

Only TIME
14:57:34

General datetime
1970-01-21 14:57:34Z

For Database
1970-01-21 14:57:34

For HTTP1.1
Wed, 21 Jan 1970 14:57:34 GMT

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