"Sat, 03 Jan 1970 05:32:56"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700103
Only TIME
05:32:56
General datetime
1970-01-03 05:32:56Z
For Database
1970-01-03 05:32:56
For HTTP1.1
Sat, 03 Jan 1970 05:32:56 GMT