"Tue, 06 Jan 1970 12:33:00"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700106
Only TIME
12:33:00
General datetime
1970-01-06 12:33:00Z
For Database
1970-01-06 12:33:00
For HTTP1.1
Tue, 06 Jan 1970 12:33:00 GMT