Science Astronomy Calendars and Timekeeping
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» Astro Portal - CalSKY 
The worldwide interactive online astronomical/space calendar and calculator - for friends of astronomy, as well as astronomers.
http://www.calsky.com/
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» 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
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» Blue Moon Myths 
Second full moon in a month, or third full moon in a single season?
http://www.infoplease.com/spot/bluemoon1.html
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» Calendar Studies 
Articles on the Gregorian and Julian calendars, the ISO date format, the Julian day number system, the Maya calendar, the Goddess lunar calendar, the Liberalia Triday Calendar and C functions for date conversion; plus software for calendrical conversion.
http://hermetic.nofadz.com/cal_stud.htm
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» Calendars through the Ages 
History and FAQs of calendars, from ancient Rome to outer space. Including Julian, Gregorian, Jewish, Islamic, Chinese, and Mayan.
http://webexhibits.org/calendars/
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» Calendopaedia 
The Encyclopaedia of Calendars.
http://www.geocities.com/calendopaedia/
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» Calendrical Calculations 
Published by Cambridge University Press. Gives a unified algorithmic presentation of the Gregorian, ISO, Julian, Coptic, Ethiopic, and Islamic civil calendars.
http://emr.cs.uiuc.edu/home/reingold/calendar-book/index.shtml
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» 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
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» Leap Seconds 
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.
http://tycho.usno.navy.mil/leapsec.html
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» 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
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» 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 compl
http://mayacalendar.com
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» Millennium Mistake 
Explains the difference between millenium and year 2000 as the absence of a year zero.
http://www.millenniummistake.net/
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» Rosetta Calendar 
An online handy tool for converting to and from the Gregorian, Julian and Jewish calendars.
http://rosettacalendar.com/
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» The Chinese Calendar 
The mathematics of the Chinese calendar. Explains the rules for the Chinese calendar.
http://www.math.nus.edu.sg/aslaksen/calendar/chinese.shtml
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» The Islamic Calendar 
The mathematics of the Islamic calendar in Singapore.
http://www.math.nus.edu.sg/aslaksen/calendar/islamic.shtml
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» 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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» Time and Dates 
Information on date, time, and time zones from the New York Public Library.
http://www.circ.uab.edu/nypldr/1time/index.htm
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Dieses Verzeichnis basiert auf dem Open Directory Project ergänzt und modifiziert durch informa-24.de
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