"Sat, 31 Jan 1970 14:45:49"

Convert date and time to unixtime.

2645149

Another datetime format string at UTC

YYYYMMDD
19700131

Only TIME
14:45:49

General datetime
1970-01-31 14:45:49Z

For Database
1970-01-31 14:45:49

For HTTP1.1
Sat, 31 Jan 1970 14:45:49 GMT

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