"Sat, 21 Mar 1970 00:53:26"

Convert date and time to unixtime.

6828806

Another datetime format string at UTC

YYYYMMDD
19700321

Only TIME
00:53:26

General datetime
1970-03-21 00:53:26Z

For Database
1970-03-21 00:53:26

For HTTP1.1
Sat, 21 Mar 1970 00:53:26 GMT

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