"Thu, 22 Jan 1970 00:20:27"

Convert date and time to unixtime.

1815627

Another datetime format string at UTC

YYYYMMDD
19700122

Only TIME
00:20:27

General datetime
1970-01-22 00:20:27Z

For Database
1970-01-22 00:20:27

For HTTP1.1
Thu, 22 Jan 1970 00:20:27 GMT

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