Over nights. Photo-shoots and other All Day/Night events will be marked as Busy. If you have an appointment booked for a few hours it will be marked as Unknown and will not show up in the calendar. Unknown usually means I am working some hours and I do have availability to meet. Available means I available for the entire day & night, only marked on extra quiet days.

I forget to update this now and then. If I forget I start again the next month. 

Check the News page for travel details and Updates