"Sun, 04 Jan 1970 11:25:40"

Convert date and time to unixtime.

300340

Another datetime format string at UTC

YYYYMMDD
19700104

Only TIME
11:25:40

General datetime
1970-01-04 11:25:40Z

For Database
1970-01-04 11:25:40

For HTTP1.1
Sun, 04 Jan 1970 11:25:40 GMT

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