"Sat, 03 Jan 1970 02:28:38"

Convert date and time to unixtime.

181718

Another datetime format string at UTC

YYYYMMDD
19700103

Only TIME
02:28:38

General datetime
1970-01-03 02:28:38Z

For Database
1970-01-03 02:28:38

For HTTP1.1
Sat, 03 Jan 1970 02:28:38 GMT

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