Comment 2 for bug 1239468

Most likely there is a mismatch between the configured and server time zone. What time zone are you in? Go to Server -> Calendar settings, it most likely has the default UTC. Change the time zone. Not sure how that will affect section schedules. We fixed a similar Bug 1233995 for 2.6.0 release, but it requires that a correct time zone is set.

There is a Bug 1030211 asking for time zone to be automatically determined.