Many people don't have all the data from different projects. And that's why they don't make crypto calendars for the long term. That's why you only found crypto calendars for 1-2 months. Here on the hodlers crypto calendar website you can browse. It's quite detailed, it describes a lot of different events in the cryptocurrency world, which will be and which are planned. In many of these events, you can get a good profit, especially if you are one of the first.