"Fri, 16 Jan 1970 07:40:13"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700116
Only TIME
07:40:13
General datetime
1970-01-16 07:40:13Z
For Database
1970-01-16 07:40:13
For HTTP1.1
Fri, 16 Jan 1970 07:40:13 GMT