Retrieving SP Calendar Items

Using CAML query, I have this requirement to retrieve items from calendar list where date is neither an Event Date nor an End Date but exists in a span of {Event & End} time like so:

I have tried creating a CAML query but unable to get a handle on retrieving the selected item in the above image where date i am querying is 2/18/2015.

Can some one point me in the right direction in writing a CAML query which help me retrieve the selected item by passing 2/18/2015 date as query value for Start/End time fields?