1. Different coloured events
2. Show multiple months in the left pane
3. Able to select arbitrary number of days for detailed view
I used Thunderbird with Calendar tweaks plugin, but it doesn't support #2 (at all) and #3 (only can select 1 week (7 days) or multiweek view starting with Monday for detailed view) and with the Calendar tweaks plugin becoming incompatible with latest Thunderbird I also lost #1

Are there any decent calendar apps on Linux, or do I have to go back to Outlook in a Windows VM?
