Since the start of quidditch schedules we have had some trouble due to the fact that having 3 match days(6 matches) and trying to balance the matches fairly is impossible.
Any given year will always have 1 team either having matches at 2pm or 4pm entirely which, when combined with the less scheduled approach to making the schedules can lead to teams feeling unfairly treated (getting all 4pm matches 2 year in a row etc.)
While there is nothing to do about it I have made a schedule spanning 8 seasons, making all teams get both one season as 2pm-only and one as 4pm-only.
This will also allow you to plan ahead with a little thinking before the poster is made.
(We begin at Y2 in the rotation this year)