Calculated Dates – Leap Year

I have forms set up to help my employees calculate dates. These have always worked in the past but now it seems like the program is still accounting for leap year which occurred last year but not this year.

For example, in the linked page, a March 15, 2025 check-in should return January 14, 2025 as the dates for “60-Day Booking Window Opens” – 60 days prior to 3/15/25. Instead it is returning January 13, 2025. This holds true for every field involving a date that would include late February but the calculations are correct when the covered time period does not cover leap day.

Any tips?

The page I need help with: [log in to see the link]