"Mon, 19 Jan 1970 23:38:13"

Convert date and time to unixtime.

1640293

Another datetime format string at UTC

YYYYMMDD
19700119

Only TIME
23:38:13

General datetime
1970-01-19 23:38:13Z

For Database
1970-01-19 23:38:13

For HTTP1.1
Mon, 19 Jan 1970 23:38:13 GMT

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