"Wed, 07 Jan 1970 11:45:55"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700107
Only TIME
11:45:55
General datetime
1970-01-07 11:45:55Z
For Database
1970-01-07 11:45:55
For HTTP1.1
Wed, 07 Jan 1970 11:45:55 GMT