"Tue, 06 Jan 1970 05:50:42"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700106
Only TIME
05:50:42
General datetime
1970-01-06 05:50:42Z
For Database
1970-01-06 05:50:42
For HTTP1.1
Tue, 06 Jan 1970 05:50:42 GMT