"Thu, 19 Feb 1970 18:16:05"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700219
Only TIME
18:16:05
General datetime
1970-02-19 18:16:05Z
For Database
1970-02-19 18:16:05
For HTTP1.1
Thu, 19 Feb 1970 18:16:05 GMT