"Sat, 07 Feb 1970 14:46:12"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700207
Only TIME
14:46:12
General datetime
1970-02-07 14:46:12Z
For Database
1970-02-07 14:46:12
For HTTP1.1
Sat, 07 Feb 1970 14:46:12 GMT