"Sat, 17 Jan 1970 00:19:28"

Convert date and time to unixtime.

1383568

Another datetime format string at UTC

YYYYMMDD
19700117

Only TIME
00:19:28

General datetime
1970-01-17 00:19:28Z

For Database
1970-01-17 00:19:28

For HTTP1.1
Sat, 17 Jan 1970 00:19:28 GMT

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