Ọdún Tódọ́gba je odun kalenda to ni ọjọ́ kan le lati ba je ki odun kalenda o ni ibamu po mo igba odun.
This graph shows the variation between the seasonal year versus the calendar year due to unequally spaced 'leap days' rules. See Iranian calendar to contrast with a calendar based on 8 leap days every 33 years.
