"We need a holiday schedule" usually means "we need a pattern so we stop reinventing December every year."
Alternating years: one parent has a holiday in even years, the other in odd years. Easy to remember. Hard on the off year for a holiday you love. Build a personal tradition for off years so the day is not only absence.
Split days: morning with one, evening with the other. Works when homes are close. Means two transitions for a tired kid. Use it when they handle transitions well.
Fixed holidays: certain days belong to each parent every year. Helpful when traditions are tied to one side of the family. Fairness lives in the yearly mix, not in identical days.
Some families keep the regular schedule and only carve out a few major exceptions. Less churn if neither household is glued to specific dates.
Whatever you choose, write start and end times, pickup location, and what happens when a holiday lands on a school or travel day. Ambiguity is where December fights live.
Revisit as kids age. A toddler's Christmas Eve is not a teen's. Build review points into plan language when you can. This is educational guidance, not legal advice.
Propose a pattern. Do not propose a vibe. Patterns are easier to accept.