"Thu, 05 Feb 1970 21:46:28"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700205
Only TIME
21:46:28
General datetime
1970-02-05 21:46:28Z
For Database
1970-02-05 21:46:28
For HTTP1.1
Thu, 05 Feb 1970 21:46:28 GMT