"Thu, 08 Jan 1970 04:39:13"

Convert date and time to unixtime.

621553

Another datetime format string at UTC

YYYYMMDD
19700108

Only TIME
04:39:13

General datetime
1970-01-08 04:39:13Z

For Database
1970-01-08 04:39:13

For HTTP1.1
Thu, 08 Jan 1970 04:39:13 GMT

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