"Wed, 21 Jan 1970 01:00:37"

Convert date and time to unixtime.

1731637

Another datetime format string at UTC

YYYYMMDD
19700121

Only TIME
01:00:37

General datetime
1970-01-21 01:00:37Z

For Database
1970-01-21 01:00:37

For HTTP1.1
Wed, 21 Jan 1970 01:00:37 GMT

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