A calendar for October 2025 is a tabular association of the times in that month, usually displayed in a grid format with seven columns, one for every day of the week. It gives a visible illustration of the month’s dates, permitting for simple planning and scheduling of occasions. Calendars might be custom-made to incorporate further data akin to holidays, appointments, and different notable dates.
Calendars have a wealthy historical past, relationship again to historical civilizations. The earliest recognized calendars have been created in Mesopotamia round 3000 BC, and so they have since been utilized by cultures around the globe to trace time and plan their actions. Immediately, calendars are an important instrument for each private {and professional} use, and so they are available a wide range of codecs, together with print, digital, and on-line variations.