"Tue, 06 Jan 1970 09:14:54"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700106
Only TIME
09:14:54
General datetime
1970-01-06 09:14:54Z
For Database
1970-01-06 09:14:54
For HTTP1.1
Tue, 06 Jan 1970 09:14:54 GMT