Your dashboard is where all your upcoming dates for all your groups are displayed in one list. It's very convenient, but that list can grow quite large very quickly - especially if you're in many groups. In an effort to minimize how many dates you see in that list, and also to minimize the load time, we limit the dashboard to only display activities that are within the next 100 days. As new activities fall within the next 100 days, they will automatically appear on your dashboard.
This limit is imposed on the website dashboard, along with the main view in our iOS and Android apps.