Survey
* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project
Egyptian Calendar By: Young A tablet of King Djer shown that early Egyp;ans made calendars for themselves and have used it since 3000 BCE Egyp;ans were using their calendar to know exact dates to do agriculture. Calendar Types There were 2 different calendar systems in ancient Egypt: Calendar (using stars) • Civil Calendar (origin of nowadays calendar) Lunar Calendar Egypt used Luni-‐solar Calendar (lunar calendar) with intercala;on of extra month Each month started with a new moon, so the year was 11 days shorter than the modern one. However, Lunar calendar wasn’t precise. There was a 13th month (Troth), which was un;l heliacal rising of Sothic happened. Sothic Sothic is a Greek term of Sopdet (Egypt language), which is Sirius, the brightest star The period that Sothic was at the sky, Nile flooded. Therefore, Egyp;ans set the period as the New year. There were 3 parts in the year: Akhet (flooding), Peret (growth-‐winter), and Shemu (harvest-‐summer) In Egypt, Sothic was only shown once a year. Every months were having 3 weeks of 10 days. There are 12 months with 30 days each. Also, there’s extra 5 days at the end of the year, so total is 365 days. In the 4th century BCE, Egyp;ans switched Lunar calendar into civil calendar. Intercalation e c a l p s t i o rns t u t e r c i h t So . s r a e y 0 6 As a result, in Egyp;an calendar, 1 year of every 14 every 1460 years is empty, which is same as 1 day per 4 years. Consequently, Egyp;ans inserted addi;onal day every 4 years. That’s why we have leap days. Broadcasting Julius Caesar got a idea from Egyp;an civil calendar and used in Roma, which was called Julian calendar. As ;me go on, there was a huge error in ;me. The year was actually, 365. 2495 days, so 10 days were ge]ng faster. Therefore, Pope Gregory XIII made the new calendar, Gregorian Calendar. S;ll, Julian or Gregorian calendar is not so different from civil calendar because Egyp;an calendar is the origin. Thanks for Reading • Egypt – • Moon – • • • – h`p://www.crystalinks.com/siriusbluestar.jpg – h`p://4.bp.blogspot.com/-‐mE_d6QaxRJ8/T03-‐xdyfa3I/AAAAAAAAEZI/jGCwjw5UOHQ/s1600/feb.29.jpg Feb 29th Agriculture h`p://upload.wikimedia.org/wikipedia/commons/4/41/India_Farming.jpg King Djer – • h`p://www.planetsforkids.org/upload/-‐moon-‐a.jpg Sirius – • h`p://egyp`ravel-‐tours.net/icons/nav/egyptpackages.jpg h`p://upload.wikimedia.org/wikipedia/commons/thumb/b/b5/Djer_stela_retouched.jpg/200px-‐ Djer_stela_retouched.jpg Egyp;an calendar – h`p://www.;mecenter.com/pages/ar;cles/old-‐egyp;an-‐calendar-‐in-‐karnak-‐temple.jpg