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Home > Space > Astronomy > Calendars and Timekeeping

Sundials




 
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Annus Novus Decimal Calendar
A proposal for a non-sectarian, culturally neutral calendar system.
http://www.atlantium.org/calendaran.html

Astro Portal - CalSKY
The worldwide interactive online astronomical/space calendar and calculator - for friends of astronomy, as well as astronomers.
http://www.calsky.com/

Astronomical Time Keeping
Extensive descriptions of many astronomical time keeping systems, with information on time zones and Julian day numbers.
http://www.maa.mhn.de/Scholar/times.html

Astronomy by JavaScript: Sun Calculators and More
Applets related to calendars and keeping time, including sidererial time.
http://www.jgiesen.de/astro/astroJS/

Blue Moon Myths
Second full moon in a month, or third full moon in a single season?
http://www.infoplease.com/spot/bluemoon1.html

Britannica.com - Clockworks: From Sundials to the Atomic Second
Britannica.com explores the history of timekeeping, from sundials to cesium atomic clocks.
http://www.britannica.com/clockworks

Calendars through the Ages
History and FAQs of calendars, from ancient Rome to outer space. Including Julian, Gregorian, Jewish, Islamic, Chinese, and Mayan.
http://www.webexhibits.org/

Indian Moons
A list of many American Indian tribe's names for months, days, and other calendar related information.
http://www.americanindian.net/moons.html

Lunisolar Calendar
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.
http://www.pburch.net/lunarcal.html

Maya Calendar 2000
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.
http://mayacalendar.com

Millennium Mistake
Explains the difference between millenium and year 2000 as the absence of a year zero.
http://www.millenniummistake.net/

Rosetta Calendar
An online handy tool for converting to and from the Gregorian, Julian and Jewish calendars.
http://www.rosettacalendar.com/

The Difference Between the Millennium and Year 2000
Questions and answers to satisfy the hearts of true millennium buffs.
http://www.timeanddate.com/counters/mil2000.html

Time and Date
Lots of time and date related information, such as yearly and monthly calendars, counters, countdown, and the world clock which shows the current time in cities all over the world.
http://www.timeanddate.com/

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