"Wed, 14 Jan 1970 09:14:56"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700114
Only TIME
09:14:56
General datetime
1970-01-14 09:14:56Z
For Database
1970-01-14 09:14:56
For HTTP1.1
Wed, 14 Jan 1970 09:14:56 GMT