"Sun, 04 Jan 1970 20:40:30"

Convert date and time to unixtime.

333630

Another datetime format string at UTC

YYYYMMDD
19700104

Only TIME
20:40:30

General datetime
1970-01-04 20:40:30Z

For Database
1970-01-04 20:40:30

For HTTP1.1
Sun, 04 Jan 1970 20:40:30 GMT


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