"Sat, 28 Mar 1970 07:11:56"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700328
Only TIME
07:11:56
General datetime
1970-03-28 07:11:56Z
For Database
1970-03-28 07:11:56
For HTTP1.1
Sat, 28 Mar 1970 07:11:56 GMT