Time and Calendar Systems
Definitions and explanations of matters concerning the measurement of time and frequency. Also to be found here is information on the construction of calendars, dates of holidays, feast days etc.
Calendars
Today's Date- Every calendarial event of the day, plus plenty of good astronomical links.
- Equinoxes & Solstices.
- Information on and dates of the equinoxes and solstices from the Royal Observatory Greenwich.
- Main UK Public and Bank Holidays and Dates
- A useful and comprehensive list.
- Peter Meyer's Calendar Studies Page
- contains a quite amazing amount of information on just about any calendrical system you could think of. Very well-written, too.
- Calendarial Data Sheets
- Supplied by the Nautical Almanac Office.
- A Simplified Easter Dating Method
- The complete procedure for calculating Easter Sunday dates for all years 326 to 4099 A.D.
Time
- The World Clock
- An excellent resource for telling the time around the world. Information on time zones and Daylight Savings Time conventions.
- The Time Scales Division of the US Naval Observatory
- Definitions and information on how we measure time.
- A Walk Through Time
- A excellent presentation on the evolution of time measurement from the NIST Physics Laboratory
- The NIST Time and Frequency Division Home Page
- General information and services to do with the measurement of time and frequency.
- CLOCKS and TIME: FAQ: Origin of Hours and Minutes
- An interesting and brief account of the origin of out current time system.
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