Paul, here is our original thread: https://premium.wpmudev.org/forums/topic/4-hour-error-in-buddypress-group-calendar
My client prohibits me from providing outside access to the production server so later today I will clone a copy for your access. In the meantime you could see the problem by looking at: http://dev.leadernet.org/groups/seminar/malaria-seminar/calendar/
I have entered the time as 1pm and it gets saved as 5pm. As I previously said, posts and other functions are all getting the correct time. Is it possible that the plugin stores old system time in the database that is getting referenced?
I need your email address to make you a member of the BuddyPress Group.