Institute for Dynamic Educational Advancement
Web Exhibits: Calendars Through the Ages: Announcing the Sky
Well-organized website depicts the "Fascinating history of the human endeavor to organize our lives in accordance with the sun and stars." Gives an overview and specifics of the basis of calendars through the ages.
Ohio State University
Ohio State University: A Brief Introduction to the Islamic (Hijri) Calendar
Provides background information about the Islamic Calendar, also called the Hijri. Explains the differences between the Gregorian calendar and the Islamic Calendar; lists important holidays and the months of the Islamic year. Provides...
Rice University
Galileo Project: Christopher Clavius
This site from The Galileo Project of the Rice University provides a biography of Clavius including an excerpt from his writings. A picture is provided in this article along with links to additional information.