"Fri, 09 Jan 1970 15:06:35"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700109
Only TIME
15:06:35
General datetime
1970-01-09 15:06:35Z
For Database
1970-01-09 15:06:35
For HTTP1.1
Fri, 09 Jan 1970 15:06:35 GMT