"Sat, 17 Jan 1970 20:43:10"

Convert date and time to unixtime.

1456990

Another datetime format string at UTC

YYYYMMDD
19700117

Only TIME
20:43:10

General datetime
1970-01-17 20:43:10Z

For Database
1970-01-17 20:43:10

For HTTP1.1
Sat, 17 Jan 1970 20:43:10 GMT

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