"Sat, 28 Mar 1970 07:12:33"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700328
Only TIME
07:12:33
General datetime
1970-03-28 07:12:33Z
For Database
1970-03-28 07:12:33
For HTTP1.1
Sat, 28 Mar 1970 07:12:33 GMT