After 4-5 years of using this calendar, we're moving to JEvent. Why? Two main reasons, there is no END time/date. You have to figure out the DURATION, whichis a PITA for weekend-long events.
Secondly, we've been getting hacked for a year from spammers, despite the JCal Pro reCaptcha. They looked at it and told us somehow people are logging on and posting them, which is NOT what is happening.
Also slow response to tech things.