Illustrative example. The dates and amounts below are provided for practice.
An event began February 29, 2020, and the anniversary is being reviewed on February 28, 2025. The selected common-year rule affects whether the fifth anniversary has arrived.
Compare unchanged dates
Enter the start and reference dates and choose Custom Anniversary. With February 28 selected, Completed Years is 5 and the next anniversary is today. With March 1 selected, Completed Years is 4 and the next anniversary is March 1, one day away.
Total Days is 1,826 in either run. The policy changes the calendar anniversary anchor while leaving the elapsed interval intact.
Record the decision
For a personal observance, agree on the preferred common-year date and use it in the tracker as well. Keep the original start as February 29. Replacing it with February 28 would remove the original leap-date meaning.
Inclusive Day Number would be 1,827 on the reference date if the start is Day 1. That is a third label, separate from completed anniversaries.
Any official recognition rule should be checked for its specific purpose. A personal celebration preference does not establish how an external organization handles the date.