Every fourth February, with the exception of centurion years NOT divisible by 400 because each year is 365.242199 days or 365 days 5h 48m and 46s, and the extra day is to compensate for the .242199
they added a extra day to february because in every 4 years there is 1/4 th of a day which is meant to be a extra day.
leap years have an extra day in february (feburary 29th) but leap years only happen every four years.
The sun makes us add another day.
because every year there is more hours and all the hours added up make another day
The month of February gets an extra day in a leap year, which occurs every four years. Leap years are necessary to keep our calendar aligned with Earth's revolutions around the sun.
Leap year. It happens in February. february, and it occurs on leap years
February is the month that has an extra day in leap years.
For 3 out of every 4 years, it is the last day of the month. In the 4th (Leap) year, an extra day, the 29th, is added.
A Leap Year.
the year is called a leap year.occurs every four years. the additional day is added on the 29th of February which originally has 28 days.
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.
years ago there was a fack sheet in the green sheet of the Milwaukee Sentinel called ASK ANDY and in said every 10,000 years to correct the calendar you needed to add and extra extra day to February.