Sure, not harder to remember a single date. But correlating your life events to past/future dates requires too much unintuitive math. What's the next date that

Sure, not harder to remember a single date. But correlating your life events to past/future dates requires too much unintuitive math. What's the next date that we'll celebrate Christmas on? On what date is your 4 week follow-up appointment? You could also switch to decimal periods of 10/100/1000 days, but the whole source of the calendar problem is that humans care about the seasons outside.