"Sun, 11 Jan 1970 21:11:01"

Convert date and time to unixtime.

940261

Another datetime format string at UTC

YYYYMMDD
19700111

Only TIME
21:11:01

General datetime
1970-01-11 21:11:01Z

For Database
1970-01-11 21:11:01

For HTTP1.1
Sun, 11 Jan 1970 21:11:01 GMT

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