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Time :: Astronomy and Space
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Sky Calendars :: Amateur
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Calendars and Lists :: Holidays

 
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NPR Topics: Space

Europe Considers Joining Space-Faring Nations
Tue, 19 Aug 2008 06:00:00 -0400
Europe's space agency reached two milestones earlier this year. A European-built lab was installed at the International Space Station. Europe launched a robotic cargo vehicle that successfully docked with the station. The European Space Agency will be building more of those automated delivery trucks. And it's also thinking about converting the cargo vehicle into a crew vehicle that could take astronauts into orbit.
Tensions With Russia May Hurt NASA Program
Fri, 15 Aug 2008 16:18:00 -0400
The conflict with Russia over Georgia might affect NASA's ability to get astronauts to the international space station after the space shuttle gets retired in 2010. Congress must pass a special waiver by Sept. 30 so NASA can buy Soyuz capsule flights.
What Makes Our Solar System Special?
Fri, 08 Aug 2008 15:02:00 -0400
Researchers say that if the conditions had been slightly different for our solar system, planets could have careened into the sun or been expelled into deep space. Also: A volunteer astronomer spots a strange gaseous object some are calling a "cosmic ghost."
Phoenix Finds A Salt Compound On Mars
Fri, 08 Aug 2008 14:07:00 -0400
NASA's Phoenix Mars Lander has detected a salt found on Earth on the surface of Mars. The salt, called perchlorate, is used in fireworks and rocket fuel. The news follows the recent confirmation of the presence of water on the Red Planet.
Space Company Hopes To Cut Cost Of Launches
Thu, 07 Aug 2008 16:44:00 -0400
A private company called SpaceX has failed three times to reach orbit with one of its rockets. But the company says it's learning from its failures and still hopes to radically decrease the cost of putting objects in space.
Mars Lander Finds Perchlorate On Mars
Tue, 05 Aug 2008 16:22:00 -0400
NASA's Phoenix spacecraft has detected the presence of perchlorate, a chemically reactive salt in the Martian soil. Though the finding could mean Mars is less friendly to potential life than previously believed, scientists are optimistic.

 
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Websites

ACalendar.com - The calendar has many options with a standard monthly interface, including sunrise, sunset, and Moon phases.

Annus Novus Decimal Calendar - A proposal for a non-sectarian, culturally neutral calendar system.

Astro Portal - CalSKY - The worldwide interactive online astronomical/space calendar and calculator - for friends of astronomy, as well as astronomers.
Meta Description: [ The most complete astronomical observation and information online-calculator on this globe: make your own calendar with satellites, asteroids, comets, planets, sun, and moon. See renderings of solar eclipses, and the planets. ]

Astronomical Time Keeping - Extensive descriptions of many astronomical time keeping systems, with information on time zones and Julian day numbers.

Astronomy by JavaScript: Sun Calculators and More - Applets related to calendars and keeping time, including sidererial time.
Meta Description: [ Astronomy by JavaScript: Sun Calulators, Solar Data and More ]

404 Astronomy Calendar - Features different views of the night sky, constellations, stars, planets, and other celestial wonders.
Meta Description: [ Astronomy Calendar. Tour the night sky, constellations, stars, planets, and other celestial wonders with the Newark Museum's Dreyfuss Planetarium. ]

Blue Moon Myths - Second full moon in a month, or third full moon in a single season?

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

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.
Meta Description: [ 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 others. ]

Calendars through the Ages - History and FAQs of calendars, from ancient Rome to outer space. Including Julian, Gregorian, Jewish, Islamic, Chinese, and Mayan.
Meta Description: [ History and FAQ's of calendars, from ancient Rome to outer space. Including Julian, Gregorian, Jewish, Islamic, Chinese, and Mayan. ]

Calendrical Calculations - Published by Cambridge University Press. Gives a unified algorithmic presentation of the Gregorian, ISO, Julian, Coptic, Ethiopic, and Islamic civil calendars.
Meta Description: [ The Calendarists ]

Greenwich Time: Home of World Time (GMT) since 1884 - Complete guide to times in every time zone in the world.
Meta Description: [ Greenwich Mean Time (GMT). What is GMT? Complete guide to time and time zones; summer time and daylight-saving time world-wide ]

Hindu Calendar Dates 52nd Century - Explains the cosmological and astronomical influences in creating the Indian calendar.

Indian Moons - A list of many American Indian tribe's names for months, days, and other calendar related information.
Meta Description: [ This page list many American Indian tribe's names for ]

Julian Day Numbers - An explanation of the Julian day number system used by astronomers and calendricists.
Meta Description: [ An article about the nature and origin of the Julian day number system. ]

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.

LunarCal - A Perpetual Chinese Lunar Calendar - LunarCal is a 160-year perpetual Chinese Lunar Calendar for 1900 to 2060. Chinese festivals are listed and the moon phase is displayed.
Meta Description: [ http://www.lunarcal.org/ ]

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.

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.
Meta Description: [ Welcome to The Maya Calendar, center of the Maya world, the greatest achievement of Maya culture and an ancient tradition. Acquire your authentic Maya Calendar here. ]

Millennium Mistake - Explains the difference between millenium and year 2000 as the absence of a year zero.
Meta Description: [ This web site contains besides a definitive solution of the millennium question an investigation into Anni Domini and a treatise on the difference between Alexandrian dates of Paschal full moon and dates of Passover. ]

Rosetta Calendar - An online handy tool for converting to and from the Gregorian, Julian and Jewish calendars.
Meta Description: [ A calendar conversion service that lets you convert dates among these calendars: Gregorian, Julian, Hebrew (Jewish) and Julian date. ]

The Calendar, Leap Years and the Year 2000 - An explanation of the calendar including the origin of the day, week, month and year.
Meta Description: [ This page contains a short explanation of the calendar, leap years and the year 2000 AD. ]

The Chinese Calendar - The mathematics of the Chinese calendar. Explains the rules for the Chinese calendar.
Meta Description: [ Explains the mathematical rules for the Chinese calendar. ]

The Difference Between the Millennium and Year 2000 - Questions and answers to satisfy the hearts of true millennium buffs.

The Islamic Calendar - The mathematics of the Islamic calendar in Singapore.
Meta Description: [ The mathematics of the Islamic calendar in Singapore. ]

The Julian and Gregorian Calendars - Explanations of the Julian Calendar, the Gregorian Reform, the adoption of the Gregorian Calendar, the length of the tropical year and related matters.
Meta Description: [ The Julian Calendar, the Gregorian reform and its adoption, astronomical year numbering, the Julian and the Gregorian Proleptic Calendars, and the accuracy of calendars. ]

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.
Meta Description: [ This site includes lots of information that is time and date related, such as yearly and monthly calendars, countdown counters and the world clock which shows current time in cities all over the world. ]

Time and Dates - Information on date, time, and time zones from the New York Public Library.

Types of Calendars - An explanation of lunar, solar, lunisolar, rule-based and other types of calendars.
Meta Description: [ A discussion of types of calendar: lunar, solar, lunisolar, rule-based, etc. ]

World Calendar/Clock, Appointments, Sun/Moon positions, Metric/Calendar Conversion - PlexGlobe is a productivity toolkit for global users and businesses that includes: - World clock and calendar such as Chinese and so on.
Meta Description: [ A software and consulting company. Provides software for anti-spam, lottery, irc and other internet-related technologies. Provides services in Internet/Web applications for E-Commerce and Web related applications. ]

World Holidays: Weeks and Months - Information on the origin of the week, and etymology of month and weekday names.


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