usually 4 years (2008-2012); sometimes 8 years (2096-2104)
Usually every four years - more specifically, years that are divisible by 4. There are exceptions at the end of a century.
There are 4 years between leap year!
every 4 years
4
There are 4 years between every leap year. Correction: There are 4 years between MOST leap years. That's the case 99.25% of the time. For the other 0.75% of the time, there are 8 years between leap years.
8 years
1 day
Time Leap happened in 360.
997.5 days and 999.78 on each leap year.
3900
Yes. Basically, the years that are multiples of 4 are leap years (with some exceptions at the end of a century).
Four years.
Time Leap was created on 2007-12-27.
The amount of time that elapses between each of the four principal phases of the moon is 29.5 days. The phases are roughly equal to each other.
About fourty-eight hours
2100 is not a leap year, because it is not divisible by 400, although divisible by 4 and by 100. So from 2096 to 2104, there will be an 8 year gap between leap years.