Julian calendar

High school (ages 12+)
Mathematics & Numbers

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/julian-calendar

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. How long is Julian calendar?365.25 days
2. What is the calendar system?Solar calendar
3. What is the year of promulgation?45 BCE
4. What is the Julian calendar and why did Julius Caesar create it?The Julian calendar is a solar calendar that was created in 45 BCE by Julius Caesar. It was made to keep the dates in line with the seasons, so people could plan festivals and farming better. Caesar added 90 extra days in 46 BCE to fix the earlier calendar’s mistakes.
5. How does the Julian calendar decide when to add an extra day?Every four years the Julian calendar adds a leap day to February, making it 29 days long. This keeps the calendar close to the length of the year.

Tropical year: The time it takes for the Earth to complete one orbit of the Sun relative to the seasons.
Intercalation: The process of adding extra days or months to a calendar to keep it synchronized with astronomical or seasonal cycles.
Vernal equinox: The moment in spring when the sun crosses the celestial equator, moving from south to north, marking the start of astronomical spring.