It is ignored until a leap year is inserted.
The fact is that the earths orbit around the sun is not a whole number of days. This means adjustments must be made periodically in calendars to ensure that the calendar is in alignment with the astronomical time.
To do so we insert an extra day in the calendarperiodically (about every 4 years) to make up the shortfall in the calendar and bring it back in alignment.
By having a leap year every four years.
To make the year start more or less in the same season every year, an extra day is added every four years.
A quarter day results from the Earth's orbit being slightly longer than 365 days. Over time, this discrepancy accumulates, leading to the addition of a leap day every four years in our calendar to balance out the extra time.
The extra one-quarter day in a year is taken into consideration through leap years, where an extra day is added to February to keep the calendar in sync with the Earth's orbit around the sun. This adjustment prevents the calendar from drifting away from the actual solar year over time.
The quarter days are added together and every 4 years a day is added to a year, giving us the 29th of February, which is the leap day in the leap year. This keeps the calendars in synch with our orbit of the Sun.
An extra day gets put in the February page
We have 52 full weeks in the calendar, plus the day and a quarter left. That remaining quarter converts to an extra day every 4 years, resulting in leap years. We cannot simply remove the day for our leisure, for the wise know what a difference a day makes.
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You have a error coin and the extra metal on it is called a "Curd". This happens when there is a chip in the die. The value depends on the size of the curd and varies from a few cents to a few dollars.
Every four years, one extra day is added into February. This is because of space. The earth takes 365 and a quarter days to make one full spin of the Sun. This is why there is an extra day every four years.
It is because the Chinease found that the time it takes to orbit the sun is actually 365 and 1/4 days. So instead of having an extra quarter day every year they have a leap year
A year in the Gregorian calendar having 366 days, with the extra day, February 29, intercalated to compensate for the quarter-day difference between an ordinary year and the astronomical year.