idea
Calendars
A calendar is an agreement about how to count days against the sky. Some follow the Moon, some the Sun, many try to follow both, and each needs small repairs: leap days, leap months, skipped dates. Behind every one sits astronomy, arithmetic and a community that wants to meet on the same day.
Connects to
- Time
- Day, month, year
- The naked-eye sky
- Dating the past
- How numbers travelled
- Zero
- Archaeoastronomy
- Time as a cycle
- Why do we count in sevens?
- Ritual and prayer