Instructional Video1:26
Soliloquy

How do we measure the length of a year?

12th - Higher Ed
The earth takes one year to orbit the sun but we can measure the length of a year in several ways. If I were to ask (and I do) how would you measure the length of a year? In reference to distant stars? By the time between two closest...
Podcast5:24
But Why

The History of the Calendar

Pre-K - Higher Ed
Understanding and tracking time is key to keeping society -- and our lives -- running smoothly. Early civilizations developed calendars with just 300 days in a year. But by 1582, the time it takes for Earth to rotate around the sun was...
Instructional Video6:37
Archaia Historia

How did Ancient Greeks tell the date? - The Athenian Calendar

12th - Higher Ed
“What is the date?” Is often a question asked in our day to day life. But how would a person in Ancient Greece answer this question?