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Windows 7: Why is a day divided into 24 hours ?

26 Jun 2013   #11
smarteyeball

 
 

Quote   Quote: Originally Posted by gladson1976 View Post
Why does an year have 12 months ?
It's how it's been since the Romans tweaked the Greek Calendar.

Quote:
The Romans borrowed parts of their earliest known calendar from the Greeks. The calendar consisted of 10 months in a year of 304 days. The Romans seem to have ignored the remaining 61 days, which fell in the middle of winter. The 10 months were named Martius, Aprilis, Maius, Junius, Quintilis, Sextilis, September, October, November, and December. The last six names were taken from the words for five, six, seven, eight, nine, and ten. Romulus, the legendary first ruler of Rome, is supposed to have introduced this calendar in the 700s B.C.E.


According to tradition, the Roman ruler Numa Pompilius added January and February to the calendar. This made the Roman year 355 days long. To make the calendar correspond approximately to the solar year, Numa also ordered the addition every other year of a month called Mercedinus. Mercedinus was inserted after February 23 or 24, and the last days of February were moved to the end of Mercedinus. In years when it was inserted, Mercedinus added 22 or 23 days to the year.
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26 Jun 2013   #12
madcratebuilder

Win8/8.1,Win7-U64, Vista U64, uncounted Linux distor's
 
 

Quote   Quote: Originally Posted by kronckew View Post
i blame the sumerians for the sexagesimal system.

some places use 'grads' for measuring angles, ie. a 90 degree angle is 100 grads. a full circle has 400 grads. swatch 'internet' time divides a day into 1000 'beats'.

most of us however stick with the sumerian system because it works.
We have a winner folks.

25hrs would need a 400* circle

I support the metric system every inch of the way.
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27 Jun 2013   #13
gladson1976

Windows 7 Ultimate x64 (XP, 98SE, 95, 3.11, DOS 7.10 on VM) + Ubuntu 10.04 LTS Lucid Lynx
 
 

Thanks for all the insights guys and gals.
The technical / astronomical answers were really good. What I really wanted to know was why the 12's were preferred over the 10's, which kronckew has provided the answer.

My question was really like, Why can't we have 400 degrees for a circle or 25 hrs a day. Why the Base 60 ?
https://en.wikipedia.org/wiki/Sexagesimal
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