"Thu, 22 Jan 1970 12:02:42"

Convert date and time to unixtime.

1857762

Another datetime format string at UTC

YYYYMMDD
19700122

Only TIME
12:02:42

General datetime
1970-01-22 12:02:42Z

For Database
1970-01-22 12:02:42

For HTTP1.1
Thu, 22 Jan 1970 12:02:42 GMT

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