"Tue, 20 Jan 1970 18:12:27"

Convert date and time to unixtime.

1707147

Another datetime format string at UTC

YYYYMMDD
19700120

Only TIME
18:12:27

General datetime
1970-01-20 18:12:27Z

For Database
1970-01-20 18:12:27

For HTTP1.1
Tue, 20 Jan 1970 18:12:27 GMT

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