"Thu, 08 Jan 1970 15:06:52"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700108
Only TIME
15:06:52
General datetime
1970-01-08 15:06:52Z
For Database
1970-01-08 15:06:52
For HTTP1.1
Thu, 08 Jan 1970 15:06:52 GMT