"Tue, 03 Feb 1970 04:35:32"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700203
Only TIME
04:35:32
General datetime
1970-02-03 04:35:32Z
For Database
1970-02-03 04:35:32
For HTTP1.1
Tue, 03 Feb 1970 04:35:32 GMT