"Wed, 18 Mar 1970 00:52:56"

Convert date and time to unixtime.

6569576

Another datetime format string at UTC

YYYYMMDD
19700318

Only TIME
00:52:56

General datetime
1970-03-18 00:52:56Z

For Database
1970-03-18 00:52:56

For HTTP1.1
Wed, 18 Mar 1970 00:52:56 GMT

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