"Wed, 07 Jan 1970 18:26:30"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700107
Only TIME
18:26:30
General datetime
1970-01-07 18:26:30Z
For Database
1970-01-07 18:26:30
For HTTP1.1
Wed, 07 Jan 1970 18:26:30 GMT