"Fri, 16 Jan 1970 11:21:17"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700116
Only TIME
11:21:17
General datetime
1970-01-16 11:21:17Z
For Database
1970-01-16 11:21:17
For HTTP1.1
Fri, 16 Jan 1970 11:21:17 GMT