"Thu, 08 Jan 1970 20:41:37"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700108
Only TIME
20:41:37
General datetime
1970-01-08 20:41:37Z
For Database
1970-01-08 20:41:37
For HTTP1.1
Thu, 08 Jan 1970 20:41:37 GMT