"Fri, 23 Jan 1970 21:48:11"

Convert date and time to unixtime.

1979291

Another datetime format string at UTC

YYYYMMDD
19700123

Only TIME
21:48:11

General datetime
1970-01-23 21:48:11Z

For Database
1970-01-23 21:48:11

For HTTP1.1
Fri, 23 Jan 1970 21:48:11 GMT

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