Hi combicart,
Welcome to the forum.
Short answer: No, there is no filtering in the front end.
Longer answer: I'm torn between two schools of thought.
a) RSVP is a great and simple event registration package and from that point of view this might start to make it a bit too complex for the user as all sessions are shown in simple date order. If you have "too many" showing you can unpublish some till you feel it is more suitable. Anyway not sure I totally hold this view so ...
b) I've sure this is something that could be achieved by customising the code. Although I've never used them I understand "Open Source Matters" are good for doing this sort of thing.

Or if you have some skills I can look to giving you some initial kickoff steps?
Sils