**Introduction:** The Leap Day Calculator is a simple tool designed to determine whether a given year is a leap year or not. Leap years, which contain an extra day (29th of February), occur every four years. This calculator provides a quick and easy way to verify whether a particular year follows this pattern.

**Formula:** The formula used by the calculator involves checking if the year is divisible by 4 but not divisible by 100, except when it is divisible by 400. Years meeting these conditions are considered leap years.

**How to Use:**

- Enter a year in the "Enter a year" field.
- Click the "Calculate" button.
- The result, indicating whether it's a leap year or not, will be displayed.

**Example:** For example, entering the year 2024 and clicking "Calculate" will display "Leap Year."

**FAQs:**

*What is a leap year?*- A leap year is a year, occurring every four years, that has an extra day, February 29th.

*How is a leap year determined?*- A leap year is determined by the rule: divisible by 4, not divisible by 100, except when divisible by 400.

*Why do we have leap years?*- Leap years help synchronize the calendar year with the solar year, compensating for the extra 0.2422 days in the Earth's orbit.

*What happens if there were no leap years?*- Over time, the misalignment between the calendar year and the solar year would result in a significant calendar drift.

*Do all countries follow the same leap year rule?*- The leap year rule is generally accepted globally, ensuring a standardized approach to keeping calendars in sync with the solar year.

**Conclusion:** The Leap Day Calculator provides a quick and efficient way to check whether a given year is a leap year. Use this tool to verify leap years for various purposes, such as scheduling events or understanding historical dates accurately.`