"Tue, 20 Jan 1970 12:33:47"

Convert date and time to unixtime.

1686827

Another datetime format string at UTC

YYYYMMDD
19700120

Only TIME
12:33:47

General datetime
1970-01-20 12:33:47Z

For Database
1970-01-20 12:33:47

For HTTP1.1
Tue, 20 Jan 1970 12:33:47 GMT

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