"Thu, 08 Jan 1970 23:35:36"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700108
Only TIME
23:35:36
General datetime
1970-01-08 23:35:36Z
For Database
1970-01-08 23:35:36
For HTTP1.1
Thu, 08 Jan 1970 23:35:36 GMT