"Fri, 27 Feb 1970 18:16:04"

Convert date and time to unixtime.

4990564

Another datetime format string at UTC

YYYYMMDD
19700227

Only TIME
18:16:04

General datetime
1970-02-27 18:16:04Z

For Database
1970-02-27 18:16:04

For HTTP1.1
Fri, 27 Feb 1970 18:16:04 GMT

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