Night-o at Lost Lakes with the juniors. Extremely technically challenging, but I felt really strong except for 14 and 18. Since it was night, I was forced to be much more precise in my navigation, which is exactly what Lost Lakes requires. So I was actually navigating better at night than I have during the day in the past.
I'm looking forward to more night-o this winter. Since I've been back stateside, it's been difficult to find places with parking lots open after dusk. Almost all of my maps here can be used for night orienteering.
Also, I used the GPS Orienteering app in the past to give me some confirmation that I had arrived at the right point, but it wasn't nearly as accurate as UsynligO and O-range. Getting confirmation you're at the right point is even more important at night than during the day. So now with O-range, I'll at least have something to say I'm at or near the right point. And I don't have to pick up anything afterwards : )