O'Reilly logo

Calendrical Calculations, Third Edition by Edward M. Reingold, Nachum Dershowitz

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

image

        Oil painting of Joseph Scaliger in the Senate Hall at Leiden. (Courtesy of Academisch Historisch Museum, Universiteit Leiden.)

12Generic Cyclical Calendars

One who is capable of making astronomical calculations, but does not make them, is unworthy of being spoken to.

Babylonian Talmud (Sabbath, 75a)

In this chapter, we use formulas from Section 1.12 to cast a number of the calendars presented in Part I into a unified framework. Years must be determined by the occurrence of some “critical” mean annual event, like a mean equinox or mean solstice. Months must also follow a uniform pattern. In single-cycle calendars, new years begin on ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required