**Leap year calendar**.
Role reversal on leap day.
So the leap year rule add a leap year every four years was a good rule but not good enough.
Calendar correction part ii to rectify the situation the creators of our calendar the gregorian calendar introduced in 1582 decided to omit leap years three times every four hundred years.
This extra day makes the year 366 days long not 365 days like a common year.

A leap year is a year with one additional day which is added to keep synchronized with the astronomical year. One year has the length of 365 days 5 hours 48 minutes and 45 seconds. For example february would have 29 days instead of just 28. Whether a wall desk or engagement we have it with leap year publishing.

Seasons of the year and astronomical events do not repeat in a whole number of days so it is necessary to add an extra day every few years to catch up with the astronomical year. This is hard to calculate with so a normal year has been given 365 days and a leap year 366 days. List of leap years. We use leap years to sync our common years with the tropical years.