Is 2015 a leap year?

2015 is not a leap year, it is a common year.

February 29th, 2015 is not a valid date.
The last leap year before 2015: 2012.
The next leap year after 2015: 2016.
Details below.

The leap year algorithm. The three conditions to check in order to know whether a year is a leap or a common one:

1) A leap year can be evenly divided by 4:

2015 is not evenly divided by 4.

2) Except if it can be evenly divided by 100 then it isn't a leap year:

2015 is not evenly divided by 100.

3) Except if it can be evenly divided by 400, then it's a leap year:

2015 is not evenly divided by 400.

2015 is not a leap year, it is a common year.
What is a leap year?

A leap year has 366 days.
2015, being a common year, has 365.

In a leap year month February has 29 days.
February 29th is a valid date.

In a common year month February has 28 days.
February 29th, 2015 does not exist.

How often do the leap years occur?

Nearly once every four years is a leap year. More exactly, leap years occur 97 times in every cycle of 400 years.

Why do we need leap years in our calendar?

Leap years keep the calendar year in sync with the astronomical year, preventing us, for example, from celebrating Christmas in the month of November.

The last leap year before 2015: 2012.
The next leap year after 2015: 2016.

Is it a leap year? Last leap year before & next leap year after this year

The leap year algorithm. The three conditions to check in order to know whether a year is a leap or a common one:

1) A leap year can be evenly divided by 4

2) Except if it can be evenly divided by 100 then it isn't a leap year

3) Except if it can be evenly divided by 400, then it's a leap year

Latest checked up years / leap or common years?

Is 2015 a leap year? When is the last leap year before 2015? When is the next leap year after 2015? Feb 24 06:00 UTC (GMT)
Is 2004 a leap year? When is the last leap year before 2004? When is the next leap year after 2004? Feb 24 06:00 UTC (GMT)
Is 2018 a leap year? When is the last leap year before 2018? When is the next leap year after 2018? Feb 24 05:59 UTC (GMT)
Is 1712 a leap year? When is the last leap year before 1712? When is the next leap year after 1712? Feb 24 05:58 UTC (GMT)
Is 1712 a leap year? When is the last leap year before 1712? When is the next leap year after 1712? Feb 24 05:58 UTC (GMT)
Is 2256 a leap year? When is the last leap year before 2256? When is the next leap year after 2256? Feb 24 05:58 UTC (GMT)
Is 1872 a leap year? When is the last leap year before 1872? When is the next leap year after 1872? Feb 24 05:57 UTC (GMT)
Is 2784 a leap year? When is the last leap year before 2784? When is the next leap year after 2784? Feb 24 05:54 UTC (GMT)
Is 2784 a leap year? When is the last leap year before 2784? When is the next leap year after 2784? Feb 24 05:54 UTC (GMT)
Is 4664 a leap year? When is the last leap year before 4664? When is the next leap year after 4664? Feb 24 05:54 UTC (GMT)
Is 2018 a leap year? When is the last leap year before 2018? When is the next leap year after 2018? Feb 24 05:53 UTC (GMT)
Is 1950 a leap year? When is the last leap year before 1950? When is the next leap year after 1950? Feb 24 05:53 UTC (GMT)
Is 2018 a leap year? When is the last leap year before 2018? When is the next leap year after 2018? Feb 24 05:50 UTC (GMT)
All users checked up years / leap or common

What is a leap year? What is a common year?

How often do the leap years occur in the calendar?

Why do we need leap years?

Leap years algorithm. Examples.

When did the leap year originate?

The modern (Gregorian) calendar and the Julian one. Julian calendar adjustment

How accurate is the Gregorian calendar, based on the leap year algorithm?


See all the articles about leap years above grouped together as a single article.


List of all the leap years between 1582 and 4818.


Is it a leap year? Calculate.