"Tue, 10 Feb 1970 14:46:21"

Convert date and time to unixtime.

3509181

Another datetime format string at UTC

YYYYMMDD
19700210

Only TIME
14:46:21

General datetime
1970-02-10 14:46:21Z

For Database
1970-02-10 14:46:21

For HTTP1.1
Tue, 10 Feb 1970 14:46:21 GMT

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