ACalendar.com Save
The calendar has many options with a standard monthly interface, including sunrise, sunset, and Moon phases.
http://www.acalendar.com/   

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

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

Astronomical Time Keeping Save
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 and Space Calendar Save
Features different views of the night sky, constellations, stars, planets, and other celestial wonders.
http://www.newarkmuseum.org/Permanent...   

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

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

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

Calendar Studies Save
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   

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

Calendopaedia Save
The Encyclopaedia of Calendars.
http://www.geocities.com/calendopaedia/   

Calendrical Calculations Save
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/...   

Greenwich Time: Home of World Time (GMT) since 1884 Save
Complete guide to times in every time zone in the world.
http://GreenwichMeanTime.info   

Hindu Calendar Dates 52nd Century Save
Explains the cosmological and astronomical influences in creating the Indian calendar.
http://senthilarumugam.tripod.com/id1...   

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

Julian Day Numbers Save
An explanation of the Julian day number system used by astronomers and calendricists.
http://www.hermetic.ch/cal_stud/jdn.htm   

Leap Seconds Save
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   

LunarCal - A Perpetual Chinese Lunar Calendar Save
LunarCal is a 160-year perpetual Chinese Lunar Calendar for 1900 to 2060. Chinese festivals are listed and the moon phase is displayed.
http://www.geocities.com/lunarcal/   

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

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

The Calendar, Leap Years and the Year 2000 Save
An explanation of the calendar including the origin of the day, week, month and year.
http://chemistry.csudh.edu/oliver/smt...   

The Chinese Calendar Save
The mathematics of the Chinese calendar. Explains the rules for the Chinese calendar.
http://www.math.nus.edu.sg/aslaksen/c...   

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

The Islamic Calendar Save
The mathematics of the Islamic calendar in Singapore.
http://www.math.nus.edu.sg/aslaksen/c...   

The Julian and Gregorian Calendars Save
Explanations of the Julian Calendar, the Gregorian Reform, the adoption of the Gregorian Calendar, the length of the tropical year and related matters.
http://www.hermetic.ch/cal_stud/cal_a...   

Time and Date Save
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/   

Time and Dates Save
Information on date, time, and time zones from the New York Public Library.
http://www.circ.uab.edu/nypldr/1time/...   

Types of Calendars Save
An explanation of lunar, solar, lunisolar, rule-based and other types of calendars.
http://www.hermetic.ch/cal_stud/lunar...   

World Calendar/Clock, Appointments, Sun/Moon positions, Metric/Calendar Conversion Save
PlexGlobe is a productivity toolkit for global users and businesses that includes: - World clock and calendar such as Chinese and so on.
http://www.plexobject.com/software/pl...   

World Holidays: Weeks and Months Save
Information on the origin of the week, and etymology of month and weekday names.
http://www.gkindia.com/holidays/weekd...   

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