"Fri, 20 Mar 1970 00:53:12"

Convert date and time to unixtime.

6742392

Another datetime format string at UTC

YYYYMMDD
19700320

Only TIME
00:53:12

General datetime
1970-03-20 00:53:12Z

For Database
1970-03-20 00:53:12

For HTTP1.1
Fri, 20 Mar 1970 00:53:12 GMT

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