There was a pivotal day that happened when I was getting divorced. When the first year "anniversary" of this date rolled around, I thought to myself, 'grrr, one year ago today...' (insert anger and sadness here). Then the two year anniversary of that date came up and I thought, 'wow, it's been two years...' (insert annoyance here).
This year, I missed the date entirely. Forgot about it. I realized over the weekend that this day passed about a month ago and I didn't even think about what it "meant".