"Wed, 21 Jan 1970 00:40:27"

Convert date and time to unixtime.

1730427

Another datetime format string at UTC

YYYYMMDD
19700121

Only TIME
00:40:27

General datetime
1970-01-21 00:40:27Z

For Database
1970-01-21 00:40:27

For HTTP1.1
Wed, 21 Jan 1970 00:40:27 GMT

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