"Sat, 03 Jan 1970 04:39:39"

Convert date and time to unixtime.

189579

Another datetime format string at UTC

YYYYMMDD
19700103

Only TIME
04:39:39

General datetime
1970-01-03 04:39:39Z

For Database
1970-01-03 04:39:39

For HTTP1.1
Sat, 03 Jan 1970 04:39:39 GMT

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