I have noticed it a lot. Whenever my life is going dull, there is no CodeForces round. But when there is some business for example sessional, exam, tour etc, there will be a CF round almost all the time. I find it utterly frustrating.
Today there is BBQ Night of our departmental batch. Unfortunately around 10-15 coders can't participate in today's round because of this. I demand the Educational Codeforces Round 56 to be delayed for at least 2 hours. Or better if held another day.