ThatDogDontHunt
Oscar Meyer Weiner
On your phone? And then transfer it to your next phone. Sometimes technology makes life easier.Who keeps a three-year calendar? Birthdays and anniversaries are every year so not so difficult.
If you give in and share your data with Google then it is trivial to have a single calendar that shows up on all of your phones and all your computers. And all of your next phones and computers. You can even share it to other peoples phones. There is likely an Apple equivalent?
I do not share my data with anyone but still sync my phone calendar to my computer(s) manually every few weeks. I generally only keep about a decade of past events.