"Fri, 16 Jan 1970 19:43:31"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700116
Only TIME
19:43:31
General datetime
1970-01-16 19:43:31Z
For Database
1970-01-16 19:43:31
For HTTP1.1
Fri, 16 Jan 1970 19:43:31 GMT