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 Intercalation
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 Related Terms
• Epagomenal day
• Wandering year
 
 
Definition: The insertion of an extra day or month into a calendar to delay the start of the following month or year. Enables calendars to match the solar year.

Related Resources:

Ancient Egypt: the Father of Time
The way in which we divide the day into hours and minutes, as well as the structure and length of the yearly calendar, owes much to pioneering developments in ancient Egypt.
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From Alistair Boddy-Evans,
Your Guide to African History.
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