Leap year comes around whenever people say it does.
It's a human invention, just like the rest of the calendar.
The system works like this:
Every fourth year is a leap year ... same year as the Summer Olympics and the US presidential election.
Those are the years that can be evenly divided by 4.
EXCEPTIONS:
The last year of each Century can be evenly divided by 4, but is NOT a leap year.
Examples are 1800, 1900, 2000, 2100, etc.
February 29 is the date of leap year.
Every four years on the 29th February
The leap year dragon comes around every four years, just like leap year. It also sometimes comes back during special "bring them back" events.
A leap year is a year that contains one extra day - February 29th. This was introduced in 1582 with the Gregorian Calendar. The name comes from the "leaping" a date will do during the leap year. For example, if a date falls on a Monday in 2001, Tuesday in 2002, Wednesday in 2003, it will "leap" over Thursday to fall on Friday in 2004.
Leap years are years which have one extra day, February 29th. These leap years come around once every 4 years, except those divisible by 100.
February 29th is leap day
Yes. If we did not insert the leap day during leap year, the calendar date of the equinoxes and solstices would change and eventually come at very different times in the calendar year. The whole purpose of Leap Year/Leap Day is to keep our calendar aligned with the equinoxes, solstices, and seasons in general.
That date doesn't exist; no odd-numbered year can be a leap year.
Every 5, 6, or 11 years, taking into account leap years.
The answer is 43
29 February
Because of leap years. Normally a date advances by one day each year, but a leap year causes a date to advance by two days. This results in a day being skipped. Those dates will come round again. A year's day and date combination will be repeated every 5th, 6th or 11th year.