"Thu, 12 Feb 1970 07:55:35"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700212
Only TIME
07:55:35
General datetime
1970-02-12 07:55:35Z
For Database
1970-02-12 07:55:35
For HTTP1.1
Thu, 12 Feb 1970 07:55:35 GMT