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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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Related Questions

Who invented the calendar used before the 365 day calendar?

The Egyptian


Did the Egyptians make the 365 day calendar?

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


When was the first 365 day calendar invented?

The first 365-day calendar, known as the solar calendar, is believed to have been developed by the ancient Egyptians around 2700 BC. This calendar was based on the annual cycle of the sun and consisted of 12 months of 30 days each, with an additional 5 or 6 days added at the end of the year to align with the solar cycle.


Why was the 365-day calendar invented?

The 365-day calendar was invented to track the time it takes for the Earth to orbit the sun, which is approximately 365.24 days. This calendar, known as the Gregorian calendar, helps align human activities with the seasonal changes caused by Earth's orbit.


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.