"Tue, 10 Feb 1970 00:20:19"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700210
Only TIME
00:20:19
General datetime
1970-02-10 00:20:19Z
For Database
1970-02-10 00:20:19
For HTTP1.1
Tue, 10 Feb 1970 00:20:19 GMT