Calendars through the Ages - Home
History and FAQ's of calendars, from ancient Rome to outer space. Including Julian, Gregorian, Jewish, Islamic, Chinese, and Mayan.
  webexhibits.org/calendars/ reviews
Local Apparent Sideral Time
Compute Local Apparent Sidereal Time Sidereal time is the hour angle of the vernal equinox, the ascending node of the ecliptic on the celestial equator. The daily motion of this point provides a measure of the rotation of the Earth with respect to the stars, rather than the Sun. Local mean sidereal time is computed from the current Greenwich Mean Sideral Time plus an input offset in longitude ...
tycho.usno.navy.mil/sidereal.html reviews
Hermetic Systems: 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.
 hermetic.nofadz.com/cal_stud.htm reviews
Leap Seconds
LEAP SECONDS Civil time is occasionally adjusted by one second increments to ensure that the difference between a uniform time scale defined by atomic clocks does not differ from the Earth's rotational time by more than 0.9 seconds. Coordinated Universal Time (UTC), an atomic time, is the basis for civil time. Historically, the second was defined in terms of the rotation of the Earth as 1/86, 400 ...
tycho.usno.navy.mil/leapsec.html reviews
The difference between the Millennium and year 2000
Location: Home page Counters Why the 3rd Millennium starts in 2001 Go to: Home Page Time Zones World Clock Calendar The difference between the Millennium and year 2000 Short explanation The 3rd Millennium starts January 1st, year 2001 NOT year 2000 as many people believe, when using the Gregorian calendar. Year 2000 starts January 1st, year 2000. Longer explanation The reason why the 3rd ...
www.timeanddate.com/counters/mil2000.html reviews
Celestial Times
Celestial Times: a monthly guide to the Night Sky - the Moon and Planets, meteors, comets, eclipses and unusual phenomena.
www.minervatech.u-net.com/celestial/index.htm reviews
Astronomical Time Keeping
Astronomical Time Keeping Introduction Siderial Time Solar Time Universal Time (UT), Greenwich Time Timezones Atomic Time Ephemeris Time, Dynamical Time Scales (TDT, TDB) Julian Day Numbers Astronomical Calendars References Introduction: Time keeping and construction of calendars are among the oldest branches of astronomy. Up until very recently, no earth-bound method of time keeping could match ...
www.maa.mhn.de/Scholar/times.html reviews
Once in a Blue Moon
Explore Our Sites... Family Education Network Home SHOP & EARN Shop at PearsonAtSchool SchoolCash PARENTS FamilyEducation MySchoolOnline TEACHERS TeacherVision Quiz Lab MyGradeBook MySchoolOnline REFERENCE Infoplease Fact Monster KIDS FEkids FunBrain Fact Monster TEENS FEteens News Weather Horoscopes . . . . . Trace your family history with Ancestry.com . . . . . All Infoplease All Almanacs ...
 www.infoplease.com/spot/bluemoon1.html reviews
Cosmicdust.co.uk
Latest Astronomy news, celestial events calender, astronomy books ...
www.cosmicdust.co.uk/ reviews
Empire of Atlantium - Annus Novus Decimal Calendar
Download pdf version of perpetual Annus Novus Calendar Download latest version of Easy Date Converter software This easy-to-use application - developed by the Acting Minister of Communications The Right Honourable Peter Meyer - converts Gregorian years and dates into their Annus Novus equivalents with a single mouseclick! Annus Novus Decimal Calendar Conscious of the potentially negative impact ...
www.atlantium.org/calendaran.html reviews
The Correct Time and Moon Phase
ObionCounty.com's Time & Moon Phase Page. The Correct Time From The Atomic Clock At The United States Naval Observatory The clock runs for 30 seconds. It may skip seconds during loading. Click reload to restart. Return To ObionCounty.com Front Page Return To ObionCounty.com News Page ...
www.obioncounty.com/News/clock.html reviews
|
Formulas and Constants
