A calendar is a system of organizing days for social, religious, commercial, or administrative purposes. The calendar can also be used to track events, appointments, and other activities. Calendars can be based on astronomical events, such as the movement of the sun or moon, or they can be based on social or religious conventions. The most common type of calendar in use today is the Gregorian calendar, which was introduced by Pope Gregory XIII in 1582. The Gregorian calendar is a solar calendar, which means that it is based on the movement of the sun. The Gregorian calendar has 12 months, each of which has either 30 or 31 days, except for February, which has 28 days (29 days in a leap year). January is the first month of the year in the Gregorian calendar.
January 2025 will have 31 days. The first day of January 2025 will be a Wednesday, and the last day of January 2025 will be a Friday. There will be 5 weekends in January 2025, and there will be 20 weekdays in January 2025.
