Hearth Interactive

A Hearth Library collection

Keeping Time

How people named the months and days, fixed the year and kept a diary

Calendars are agreements about time, and people have argued over them for more than two thousand years. Farmers' days and months, the reform of Julius Caesar, the Maya count of days, the switch to the Gregorian calendar in Britain, Japan and Russia, and the French Republic's new months, in the words of the people who made them. With diaries dated day by day, and how people counted on knotted cords and their fingers. A companion to the Keeping Time games on Hearth Games.

See these sources on the map or on the timeline

Teach this collection

Classroom units on Hearth Learning. Each asks one big question and gathers its sources, teacher notes, a worksheet for each source and a download for your LMS.

  1. Unit 1Naming the monthsWhy are the months and days called what they are, and who decided?2 sources
  2. Unit 2Fixing the yearHow did people make the calendar keep in step with the seasons?2 sources
  3. Unit 3Living by the calendarHow did the calendar shape people's work and daily lives?2 sources

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