"Fri, 27 Mar 1970 07:12:24"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700327
Only TIME
07:12:24
General datetime
1970-03-27 07:12:24Z
For Database
1970-03-27 07:12:24
For HTTP1.1
Fri, 27 Mar 1970 07:12:24 GMT