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Al-Battani (850-922) was a Muslim astronomer who accurately determined the length of the solar year as being 365 days, 5 hours, 46 minutes and 24 seconds.
Reference:-
*http://en.wikipedia.org/wiki/Mu%E1%B8%A5ammad_ibn_J%C4%81bir_al-%E1%B8%A4arr%C4%81n%C4%AB_al-Batt%C4%81n%C4%AB
*http://www-history.mcs.st-andrews.ac.uk/Biographies/Al-Battani.html
*MacTutor History of Mathematics archive, University of St Andrews.
What else can I help you with?
Why are there 365 steps on a Mayan pyramid?
To represent the days in a year, 365.
As a first lieutenant in the army National Guard can you get a year back for being deployed?
You'll get a point for every day you're on active duty. 365 points for 365 days of duty.
Does the earth revolve 365 times each year?
yes that is why each year has 365 days , actually practically speaking it some times has 364 or 364 one fourth days
When was the first calendar made?
The ancient Egyptians counted how many days it took till harvest, and they counted 365 days between each harvest. Therefore, the ancient Egyptians year was 365 days. This made it easier to tell within how many days it would be till the next harvest, as well as being able to specify dates and times.
How many days were there in the Aztec Calendar?
The Aztec calendar is 365 days without a leap day (Xiuh-Pohualli). Like the Maya, the 20-day constant of a 360-day calendar will create a cycle with their 13 days so that the days which cycle numbered 1 thru 13 will also have the 20 names meet with them every 260 days (Tonal-Pohualli, or ritual cycle).
How much days are in a year?
365 1/4 days in a year 365 and a quarter days every year, that's why we have a leap year every fourth year to round it up
How many days are in a common year?
There are 365 days in a normal year, with 366 in a leap year.
How many days of in a year?
A year is 365 days (366 days in a Leap Year).
What do you call period of 365 days starting from 1st January?
It can be a year, but a leap year is 366 days, so it is not always a year. In a leap year, there is no special name for the first 365 days.
How day are there in a year?
There is 365 days in a year, but in a leap year there are 366 days.
Which is longer 365 days or a year?
A year. It is about 365 and a quarter days.
How many days are in year?
505 days (1 year/365 days)= 1.3836 years============.3836 * 365 = 140 daysso,1 year and 140 days---------------------------
How many days in the year?
There are 365 days in a year. In a leap year there are 366 days.
How much days in one year?
365
Who discovered there were 365 days in a year?
The ancient Egyptians were among the first to establish a calendar based on a year that consisted of 365 days. They observed the annual rising of the star Sirius, which coincided with the flooding of the Nile River and helped them determine the length of a year.
How many days were there in 1997 - 2010?
5,113 days. 1997 was not a leap year, so it had 365 days. 1998 was not a leap year, so it had 365 days. 1999 was not a leap year, so it had 365 days. 2000 was a leap year, so it had 366 days. 2001 was not a leap year, so it had 365 days. 2002 was not a leap year, so it had 365 days. 2003 was not a leap year, so it had 365 days. 2004 was a leap year, so it had 366 days. 2005 was not a leap year, so it had 365 days. 2006 was not a leap year, so it had 365 days. 2007 was not a leap year, so it had 365 days. 2008 was a leap year, so it had 366 days. 2009 was not a leap year, so it had 365 days. 2010 was not a leap year, so it had 365 days. This gives us 11 non-leap years, or 11 years with 365 days, which is 11(365), and 3 leap years, or 3 years with 366 days. This is 3(366). So the number of days in 1997 - 2010 would be represented by the expression 11(365) + 3(366), which gives us 5,113 days.
What fraction of a year is 265 days?
1 year = 365.25 days (approx) making allowance for leap years.Therefore 265 days/1 year = 265 days/365.25 days = 265/365.25 = 26500/36525.
