"Fri, 16 Jan 1970 20:42:23"

Convert date and time to unixtime.

1370543

Another datetime format string at UTC

YYYYMMDD
19700116

Only TIME
20:42:23

General datetime
1970-01-16 20:42:23Z

For Database
1970-01-16 20:42:23

For HTTP1.1
Fri, 16 Jan 1970 20:42:23 GMT

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