Define an earths day as 364.25 days?

An Earth Day defined as 364.25 days suggests that a complete rotation of the Earth on its axis occurs in that period, which is not accurate according to the current scientific understanding. A standard Earth day is approximately 24 hours, corresponding to the Earth's rotation. The concept of 364.25 days could imply a variation in the calendar system, perhaps accounting for leap years or other adjustments, but it does not reflect the actual time it takes for the Earth to complete one full rotation. Thus, this definition would be misleading within the context of conventional timekeeping.