"Fri, 16 Jan 1970 21:42:52"

Convert date and time to unixtime.

1374172

Another datetime format string at UTC

YYYYMMDD
19700116

Only TIME
21:42:52

General datetime
1970-01-16 21:42:52Z

For Database
1970-01-16 21:42:52

For HTTP1.1
Fri, 16 Jan 1970 21:42:52 GMT

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