"Sun, 11 Jan 1970 19:40:08"

Convert date and time to unixtime.

934808

Another datetime format string at UTC

YYYYMMDD
19700111

Only TIME
19:40:08

General datetime
1970-01-11 19:40:08Z

For Database
1970-01-11 19:40:08

For HTTP1.1
Sun, 11 Jan 1970 19:40:08 GMT

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