Most cities usually have a celebration in the center of it, or if it's a smaller settlement, in the town square. This usually involves lots of candles and fire and dancing and songs.
Last year we had a pretty lousy weather in our city, and this year isn't that different either, so I'm guessing there won't be that many people out and about - but I can tell you that you would have some fun if you would attend it (we partook in a demonstration of fire-breathing. It was pretty awesome!)
Anyways, what I wanted to tell you guys with this is that we will also be participating in this with shutting off all lights etc.etc for a straight hour (between 8:30 and 9:30), and I'm urging every one of you to do it also. Come on, it will be fun.
And to demonstrate it, here's some video you should check out!