Calendars and Timekeeping in the Best of the Web Directory

Calendars and Timekeeping

  • Astronomy Center - The Old Farmer's Almanac

    Provides a skywatch, tide predictions, forums and links.

  • Cal Sky

    Features the most accomplished astronomical observation and online-calculator of the planet.

  • Calendar, Leap Years and the Year 2000 AD

    Shows article on the history and types of calendar. Also contains definitions of the day, week, month and year.

  • Earth Orbit

    Information about the solstices, equinoxes, and seasons from Eric Weisstein's Treasure Trove of Astronomy.

  • Length of Day and Twilight (Formulas)

    Derives the formulae needed to calculate the length of the day, based on day of year and latitude

  • Mathematics of the Chinese Calendar

    Features a research paper on the Chinese calendar by Helmer Aslaksen. Shows photos and diagrams.

  • NASA Eclipse Web Site

    Dates of solar and lunar eclipses.

  • Paula Burch

    Features article on lunisolar calendar of 2006. Also shows diagram of the calendar.

  • Physics and Astronomy

    Contains scripts for calculating solar information such as sunrise, sunset, twilight, altitude and azimuth.

  • Time and Date

    Discusses the difference between the Millennium and year 2000. Also shows charts of staring dates for centuries and millennia.

  • Time to Talk

    Features article on Blue Moon by Borgna Brunner and Anne Marie Imbornoni. Also contain information on its kinds and calculations as to when it happens.

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