Astronomy: Calendars and Timekeeping: Page 2

A list of many American Indian tribe's names for months, days, and other calendar related information.

Civil time is occasionally adjusted by one second increments called leap seconds. A detailed explanation of what a second actually is, and why leap seconds are necessary.

LunarCal is a 160-year perpetual Chinese Lunar Calendar for 1900 to 2060. Chinese festivals are listed and the moon phase is displayed.

Lunar calendar with lunations, from new moon to new moon, instead of months. Moon phase on each day. Chinese, Jewish, and Islamic months. Eclipses, meteors, planets, star charts. Christian, Pagan, Islamic, Hindu, and Jewish holidays.

The calendar was the center of Maya life and their greatest cultural achievement. To carry out their astronomical calculations they developed a sophisticated mathematical system. The Maya Calendar website is developing with the intent of providing a complete view of Maya culture.

Explains the difference between millenium and year 2000 as the absence of a year zero.

An online handy tool for converting to and from the Gregorian, Julian and Jewish calendars.

An explanation of the calendar including the origin of the day, week, month and year.

The mathematics of the Chinese calendar. Explains the rules for the Chinese calendar.

Questions and answers to satisfy the hearts of true millennium buffs.