"Wed, 07 Jan 1970 18:14:16"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700107
Only TIME
18:14:16
General datetime
1970-01-07 18:14:16Z
For Database
1970-01-07 18:14:16
For HTTP1.1
Wed, 07 Jan 1970 18:14:16 GMT