A month is a unit of time that typically consists of 28 to 31 days. It is part of the calendar system used to organize days into a manageable format. The Gregorian calendar, which is widely used today, has 12 months, including January, February, March, and so on. Each month has its own significance and often corresponds to seasonal changes. Months are used to track time for various purposes, such as scheduling events, planning activities, and measuring age. The concept of a month dates back to ancient civilizations, which based their months on the lunar cycle. Today, months help people coordinate their lives and activities throughout the year.