"Sun, 11 Jan 1970 20:36:53"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700111
Only TIME
20:36:53
General datetime
1970-01-11 20:36:53Z
For Database
1970-01-11 20:36:53
For HTTP1.1
Sun, 11 Jan 1970 20:36:53 GMT