"Tue, 06 Jan 1970 19:40:48"

Convert date and time to unixtime.

502848

Another datetime format string at UTC

YYYYMMDD
19700106

Only TIME
19:40:48

General datetime
1970-01-06 19:40:48Z

For Database
1970-01-06 19:40:48

For HTTP1.1
Tue, 06 Jan 1970 19:40:48 GMT

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