High School Math

MISSION STATEMENT: To encourage and promote a greater use of the internet and computer technology in the math classroom. For educators, students, parents and homeschoolers.

Friday, January 28, 2005

Islamic Calendar


The Islamic calendar has its starting point at the date of the flight of Mohammed from Mecca to Medina, known as the Hejira. The most widely accepted date for this event in the Gregorian calendar is sunset at July 16, 622 AD. This dating system is used in the Muslim world (except Turkey, which uses the Gregorian calendar) and based on a year of 12 months, each month beginning approximately at the time of the New Moon.

The Islamic calendar is tied to the lunar phase cycle, with each month alternatively having either 29 or 30 days. The calendar drifts by relative to the sun and uses an 11-year leap year cycle. The year has either 354 or 355 days. No months are ever added, so that the named months do not remain in the same seasons but move through all the seasons of the year (of about 365.25 days) every 32.5 solar years. The names of the Islamic months are Muharram, Safar, Rabia I, Rabia II, Jumada I, Jumada II, Rajab, Sha'ban, Ramadan, Shawwal, Dhu al-Qada, and Dhu al-Hijah.

Click     www.TheMathWebSite.com     and put a weekly
puzzle, amusement, enrichment or challenge question
like this one on your school's website!