"Fri, 16 Jan 1970 12:03:20"

Convert date and time to unixtime.

1339400

Another datetime format string at UTC

YYYYMMDD
19700116

Only TIME
12:03:20

General datetime
1970-01-16 12:03:20Z

For Database
1970-01-16 12:03:20

For HTTP1.1
Fri, 16 Jan 1970 12:03:20 GMT

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