"Tue, 13 Jan 1970 14:06:21"

Convert date and time to unixtime.

1087581

Another datetime format string at UTC

YYYYMMDD
19700113

Only TIME
14:06:21

General datetime
1970-01-13 14:06:21Z

For Database
1970-01-13 14:06:21

For HTTP1.1
Tue, 13 Jan 1970 14:06:21 GMT

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