"Thu, 08 Jan 1970 18:25:15"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700108
Only TIME
18:25:15
General datetime
1970-01-08 18:25:15Z
For Database
1970-01-08 18:25:15
For HTTP1.1
Thu, 08 Jan 1970 18:25:15 GMT