"Wed, 07 Jan 1970 18:14:58"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700107
Only TIME
18:14:58
General datetime
1970-01-07 18:14:58Z
For Database
1970-01-07 18:14:58
For HTTP1.1
Wed, 07 Jan 1970 18:14:58 GMT