One of the projects I have been working on is a civics calendar so people can get more involved, this is the current meetings for Portland next week, neighborhood associations and district coalitions in red, and city council and city advisory boards in green. It is not perfect but week to week it should tell you what everything is going to be. There will be more added so if you want to know more you can always look. I would say just on default if you are looking for your neighborhood association meeting then you will need to look with the time closer to 9 pm. A lot of them are between the 6 to 9 pm. This has been something I will keep working on when I get the time. If you are interested about civics in portland hope this helps.