"Tue, 27 Jan 1970 00:40:13"

Convert date and time to unixtime.

2248813

Another datetime format string at UTC

YYYYMMDD
19700127

Only TIME
00:40:13

General datetime
1970-01-27 00:40:13Z

For Database
1970-01-27 00:40:13

For HTTP1.1
Tue, 27 Jan 1970 00:40:13 GMT

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