"Sun, 04 Jan 1970 23:30:44"

Convert date and time to unixtime.

343844

Another datetime format string at UTC

YYYYMMDD
19700104

Only TIME
23:30:44

General datetime
1970-01-04 23:30:44Z

For Database
1970-01-04 23:30:44

For HTTP1.1
Sun, 04 Jan 1970 23:30:44 GMT

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