"Tue, 06 Jan 1970 21:38:47"

Convert date and time to unixtime.

509927

Another datetime format string at UTC

YYYYMMDD
19700106

Only TIME
21:38:47

General datetime
1970-01-06 21:38:47Z

For Database
1970-01-06 21:38:47

For HTTP1.1
Tue, 06 Jan 1970 21:38:47 GMT

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