Illustrative example. The dates and amounts below are provided for practice.
A couple remembers both their first date on February 14, 2023 and the day they became a couple on March 10, 2023. A February gathering is intended to celebrate the first date.
Match the type to the event
Enter February 14, 2023, choose First Date Anniversary, and calculate as of February 14, 2027. The result is four completed years and 1,461 elapsed days.
Run March 10, 2023 with Relationship Anniversary and the same reference date. Three completed years appear. The next relationship anniversary is March 10, 2027, 24 days away.
Use the distinction in the invitation
“Four years since our first date” fits the February gathering. A title that only says “Four years together” may imply the March starting point, so choose wording both people understand.
Inclusive numbering adds one to an elapsed total, but anniversary years still follow the relevant month and day. The leap day inside the four-year first-date interval explains why its total is more than four times 365.
Save both annual records with their own titles. An anniversary type changes the label on the calculation, not the underlying method.