"Tue, 27 Jan 1970 00:39:45"

Convert date and time to unixtime.

2248785

Another datetime format string at UTC

YYYYMMDD
19700127

Only TIME
00:39:45

General datetime
1970-01-27 00:39:45Z

For Database
1970-01-27 00:39:45

For HTTP1.1
Tue, 27 Jan 1970 00:39:45 GMT

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