"Fri, 16 Jan 1970 14:57:03"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700116
Only TIME
14:57:03
General datetime
1970-01-16 14:57:03Z
For Database
1970-01-16 14:57:03
For HTTP1.1
Fri, 16 Jan 1970 14:57:03 GMT