"Mon, 05 Jan 1970 21:10:09"

Convert date and time to unixtime.

421809

Another datetime format string at UTC

YYYYMMDD
19700105

Only TIME
21:10:09

General datetime
1970-01-05 21:10:09Z

For Database
1970-01-05 21:10:09

For HTTP1.1
Mon, 05 Jan 1970 21:10:09 GMT

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