A "year" is a unit of time that typically consists of 365 days, which is the time it takes for the Earth to complete one full orbit around the Sun. In a leap year, which occurs every four years, an extra day is added, making it 366 days. This adjustment helps keep our calendar in sync with the Earth's position in its orbit. Years are commonly divided into months, with each month having a varying number of days. The Gregorian calendar, widely used today, organizes the year into 12 months, starting with January and ending with December. Each year is also assigned a specific number, such as 2023, to indicate its position in the chronological sequence.