"Thu, 08 Jan 1970 09:15:55"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700108
Only TIME
09:15:55
General datetime
1970-01-08 09:15:55Z
For Database
1970-01-08 09:15:55
For HTTP1.1
Thu, 08 Jan 1970 09:15:55 GMT