"Fri, 09 Jan 1970 03:44:03"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700109
Only TIME
03:44:03
General datetime
1970-01-09 03:44:03Z
For Database
1970-01-09 03:44:03
For HTTP1.1
Fri, 09 Jan 1970 03:44:03 GMT