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