"Wed, 21 Jan 1970 21:49:01"

Convert date and time to unixtime.

1806541

Another datetime format string at UTC

YYYYMMDD
19700121

Only TIME
21:49:01

General datetime
1970-01-21 21:49:01Z

For Database
1970-01-21 21:49:01

For HTTP1.1
Wed, 21 Jan 1970 21:49:01 GMT


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