"Fri, 09 Jan 1970 00:56:18"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700109
Only TIME
00:56:18
General datetime
1970-01-09 00:56:18Z
For Database
1970-01-09 00:56:18
For HTTP1.1
Fri, 09 Jan 1970 00:56:18 GMT