As the year 2024 approaches, people around the world are gearing up for a leap year, which comes around once every four years. The concept of a leap year arises from the fact that a year in the international solar calendar is not exactly 365 days long. Instead, it consists of 365 days, five hours, 48 minutes and 46 seconds. To account for this extra time, we add an extra day to our calendars every four years. This ad.