"Tue, 27 Jan 1970 04:42:44"

Convert date and time to unixtime.

2263364

Another datetime format string at UTC

YYYYMMDD
19700127

Only TIME
04:42:44

General datetime
1970-01-27 04:42:44Z

For Database
1970-01-27 04:42:44

For HTTP1.1
Tue, 27 Jan 1970 04:42:44 GMT


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