"Tue, 06 Jan 1970 14:30:21"

Convert date and time to unixtime.

484221

Another datetime format string at UTC

YYYYMMDD
19700106

Only TIME
14:30:21

General datetime
1970-01-06 14:30:21Z

For Database
1970-01-06 14:30:21

For HTTP1.1
Tue, 06 Jan 1970 14:30:21 GMT

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