"Tue, 06 Jan 1970 07:14:40"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700106
Only TIME
07:14:40
General datetime
1970-01-06 07:14:40Z
For Database
1970-01-06 07:14:40
For HTTP1.1
Tue, 06 Jan 1970 07:14:40 GMT