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The 365 day calendar was technically first invented by the ancient Egyptians. They had a 360 day calendar that had 12 months with 3 seasons (Akhet - June 15 to October 15, Proyet - October 15 to February 15 and Shomu - Februray 15 to June 15). The calendar corresponded with the flooding of the Nile River which occurred around June 20th, not long after the star Sirius (from the constellation Canis Major) reappeared on the eastern horizon. Five extra days were added at the beginning of each year and during these days, the birthdays of the gods were celebrated. Thus, bringing their calendar to 365 days. However, they did not compensate for the leap year as we do today so the calendar and seasons drifted out of line. This eventually lead to a 5 month discrepancy at the end of the Old Kingdom. The Ancient Egyptians The 365 day calendar was technically first invented by the ancient Egyptians. They had a 360 day calendar that had 12 months with 3 seasons (Akhet - June 15 to October 15, Proyet - October 15 to February 15 and Shomu - Februray 15 to June 15). The calendar corresponded with the flooding of the Nile River which occurred around June 20th, not long after the star Sirius (from the constellation Canis Major) reappeared on the eastern horizon. Five extra days were added at the beginning of each year and during these days, the birthdays of the gods were celebrated. Thus, bringing their calendar to 365 days. However, they did not compensate for the leap year as we do today so the calendar and seasons drifted out of line. This eventually lead to a 5 month discrepancy at the end of the Old Kingdom.
The 365 day calendar was technically first invented by the ancient Egyptians. They had a 360 day calendar that had 12 months with 3 seasons (Akhet - June 15 to October 15, Proyet - October 15 to February 15 and Shomu - Februray 15 to June 15). The calendar corresponded with the flooding of the Nile River which occurred around June 20th, not long after the star Sirius (from the constellation Canis Major) reappeared on the eastern horizon. Five extra days were added at the beginning of each year and during these days, the birthdays of the gods were celebrated. Thus, bringing their calendar to 365 days. However, they did not compensate for the leap year as we do today so the calendar and seasons drifted out of line. This eventually lead to a 5 month discrepancy at the end of the Old Kingdom.

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Q: Who invented the 365 day calendar?
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Related questions

Who invented the calendar used before the 365 day calendar?

The Egyptian


When was the first 365 day calendar invented?

It is not know precisely who or where the first 365 day calendar was invented or used. Many cultures on many continents used and invented it independently.


Did the Egyptians make the 365 day calendar?

No. The Aztecs are credited with making the 365-day calendar.


Why was the 365-day calendar invented?

so they could keep track of the days and special event and holidays they had


What civilization used a 365 day calendar and built their cities at thebes and Memphis?

Egypt were the first ones to use the 365-day calendar


Why was the calendar an important achievement?

It was a 365-day calendar similar to our present-day calendar.


The 365-day calendar was a contribution of the ancient civilization of?

The ancient Egyptians had a 360 day calendar, but i do believe they were the founders of the 365 calendar. Hope it help :)


How did the ancient civilizations help us today?

One common example would be the Mayans. They invented the 365 day calendar.


When and by who was the 365 day calendar invented?

The calendar we use was invented/made by the Romans in about 46 AD. August is named after Julius Caesar from his death while some the months and days come from Roman gods.


What is the name of the calendar that counts each day of the year from 1 to 365?

a superwhore day to day calendar


Who invented a 365-day calendar and rubber balls?

The ancient Olmecs invented both things, although so did others in other parts of the world independently.


Who invented a 365 day calendar and rubber balls?

The ancient Olmecs invented both things, although so did others in other parts of the world independently.