"Thu, 12 Feb 1970 07:12:18"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700212
Only TIME
07:12:18
General datetime
1970-02-12 07:12:18Z
For Database
1970-02-12 07:12:18
For HTTP1.1
Thu, 12 Feb 1970 07:12:18 GMT