"Sat, 17 Jan 1970 18:03:45"

Convert date and time to unixtime.

1447425

Another datetime format string at UTC

YYYYMMDD
19700117

Only TIME
18:03:45

General datetime
1970-01-17 18:03:45Z

For Database
1970-01-17 18:03:45

For HTTP1.1
Sat, 17 Jan 1970 18:03:45 GMT

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