Posted events not visible during Nov, Dec, Feb months

The calendar has been working fine then all of the sudden I have missing events that should be visible on the calendar. I can find the events in the Dashboard events but issues with specific months.

Not showing: the months December, January, and February for reoccurring and single event listings. Oddly, they do show up on list format.

I disabled all plug-in except Full calendar and the events plugin’s but no improvement.

I have the same issue with another client’s calendar
Any Ideas?
Page links
http://capitalski.com/calendar/
http://capitalski.com/events-glance/

Thank you in advance for you help!
Crissymarie

http://wordpress.org/plugins/events-manager/