On the Koha web site is a link "Calendar" https://koha-community.org/calendar/ There are only entries for "Koha Bugfix Release" I miss the KohaConf, Koha Hackfest, IRC meeting etc... I'm wondering if the calendar is still maintained?
The calendar depends on people putting things into it, and/or letting me know to do so. You are right that KohaCon should probably be in there, I will add it. Liz