That's enough pondering. On with the point of all this!
We have a non-disposable, dayless and yearless calendar hanging in our bathroom that is intended for recording and redisplaying this kind of information. It simply gives the months and the dates as numbers along with photographic scenes of beautiful rural Holland. Each month, another striking bulb-field or windmill or cow, another set of helpful reminders.
It might sound obvious, but it's only when I moved in with my significantly better half that I realised the ease and practical benefit of a calendar in the bathroom.
No more recurring dates of interest will ever be missed (so long as they qualify for a place in the calendar).
Co-founder, The Clean Sheet