"Tue, 10 Feb 1970 21:41:57"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700210
Only TIME
21:41:57
General datetime
1970-02-10 21:41:57Z
For Database
1970-02-10 21:41:57
For HTTP1.1
Tue, 10 Feb 1970 21:41:57 GMT