Some version of a calendar has been around since 3100 BC in ancient Mesopotamia. Since then, many different types of calendars have been used around the world, including most commonly the Gregorian calendar. Here's a deep dive into the history of calendars!
Learn more about calendar history!
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Learn all the different types of calendars!
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Get custom calendars for your school or office!
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How Old is the Calendar?
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qlpquality logo productslogo productscustom giveawayscalendarshistory of calendarscalendar historylunar calendarsolar calendarlunisolar calendarancient calendarshow old are calendarsjulian calendarsroman calendarhistory of calendars timelinegregorian calendarwhen was the calendar inventedsumerian calendarfirst calendar in the world