Not exactly what you want, but there is:
https://www.esoui.com/downloads/info...ntTracker.html
Which at least reminds you about events a few days before / during it.
If you use minion and dont just autoupdate you will find it an Update available (= some kind of notification) as soon as the author works in the data for a new event.
If you play every 3rd day this should be good enough.
If you want it further in advance, you will have to create your own database based on past events, which means: checking official website/wiki/social media