# Leap Years

A leap year has 366 days rather than the usual 365 days. This extra day is added to the month of February, making it a 29-day month instead of the usual 28 days.

Leap years are necessary because the Earth's orbit around the Sun is approximately 365.24 days, not exactly 365 days.

The rules for leap years are the following:

1. A year that is divisible by 4 is a leap year.
2. However, a year that is divisible by 100 is not a leap year unless it is also divisible by 400.

2024 is a leap year, with February 29 as a leap day.

## What is a leap year?

A leap year is a year with one extra day compared to a common year.

## How many days in leap year?

A leap year has 366 days.

## How to know if it is a leap year?

We can determine if a given year is a leap year using these rules.

To determine if a year is a leap year:

1. If the year is divisible by 4, go to step 2. If not, it is not a leap year.
2. If the year is divisible by 100, go to step 3. If not, results in a leap year.
3. If the year can be divided by 400, it is a leap year. If not, it is not a leap year.

### How to calculate a leap year?

Following the rules mentioned above, let's see if 2024 is a leap year:

1. 2024/4 = 506.
2. 2024 is not divisible with 100, so 2024 is a leap year.

## When is the next leap year?

The next leap year is 2028. Future leap years include 2032, 2036, and 2040.

### How often is leap year?

Leap years occur every four years, with one exception. The exception is when the year is divisible by 100 and not divisible by 400.

### When was the previous leap year?

The previous leap year was 2020. Other leap years that passed recently are 2016, 2012, 2008, 2004, or 2000.

### Is 2024 a leap year?

Yes, 2024 is a leap year since can be divided by four.

We can see that it is not divisible by 100 (2024/100=20,24) but divisible by 4 (2024/4= 506). Thus, 2024 will be a leap year, just as the previous one, which occurred in 2020.

## Leap year years list

In the following table you can find the list of leap years from 1800 till 2400. In each of the following six columns you can see the leap years in each century 18, 19, 20, 21, 22 and 23th.

 180418081812181618201824182818321836184018441848185218561860186418681872187618801884188818921896 1904190819121916192019241928193219361940194419481952195619601964196819721976198019841988199219962000 200420082012201620202024202820322036204020442048205220562060206420682072207620802084208820922096 210421082112211621202124212821322136214021442148215221562160216421682172217621802184218821922196 220422082212221622202224222822322236224022442248225222562260226422682272227622802284228822922296 2304230823122316232023242328233223362340234423482352235623602364236823722376238023842388239223962400

*The years 1900, 2100, 2200, 2300 are not leap years, that's why they do not appear in the list.

#### FAQ Leap Year

When the leap year rules were introduced?

The rules for leap years were introduced to ensure that the calendar year aligns as closely as possible with the solar year. Without leap years, the calendar would gradually drift out of sync with the seasons.

The concept of leap years, a fascinating part of our history, dates back to the time of Julius Caesar in ancient Rome. The Julian calendar, introduced by Julius Caesar in 45 BCE, established the basic rules for leap years. However, it was later refined by the Gregorian calendar, introduced by Pope Gregory XIII in 1582, to provide a more accurate alignment with the solar year.

Why do we have leap years?

Leap years, a necessary adjustment, occur approximately every four years, but not exactly. The average length of a solar year is about 365.24 days, so adding an extra day every four years compensates for the additional fraction of a day. This adjustment ensures that the calendar remains relatively synchronized with the Earth's orbit around the Sun.

Why is it called leap year?

Leap years are called "leap" years because we "leap" or add an extra day to the calendar, effectively extending the month of February to 29 days instead of the usual 28.

Why aren't leap years always every four years?

Leap years are not always every four years because of the exception if a year is divisible by 100; it is not a leap year unless it is also divisible by 400. This rule helps to maintain the accuracy of our calendar.

Let's see the details: Leap years are not always every four years due to the adjustment needed to account for the slightly shorter solar year of 365.24 days. By skipping leap years in some instances (those divisible by 100 but not by 400), the calendar system compensates for the slight discrepancy and keeps the calendar year more closely aligned with the solar year.