"Mon, 23 Feb 1970 12:03:07"

Convert date and time to unixtime.

4622587

Another datetime format string at UTC

YYYYMMDD
19700223

Only TIME
12:03:07

General datetime
1970-02-23 12:03:07Z

For Database
1970-02-23 12:03:07

For HTTP1.1
Mon, 23 Feb 1970 12:03:07 GMT

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