- Compute Local Apparent Sidereal Time
 - An online form. Astronomers use local sidereal time because it corresponds to the coordinate right ascension of a celestial body that is presently on the local meridian. - Enquirerworld.com
- Information on measurements of time that includes time standards, zones, scales, calendar systems, and horology.
- International Date Line (5)
- International Standard Date and Time Notation
- Specifies numeric representations of date and time.
- Long Now Foundation, The
- Proposes both a mechanism and a myth: a 10,000-year Clock, as a corrective to the short attention span of contemporary society.
- Mystical World Wide Web Time Grid
- Facts and history about time and clocks, and folklore of the days of the year, months, and seasons.
- National Institute of Standards and Technology - Time and Frequency Division
- Maintains the standard for frequency and time interval for the United States though the NIST-F1 Cesium Fountain Atomic Clock.
- NZ Maths: Calibrating Clocks
- Educational exercise to construct water clocks, pendulums, and more.
- On Time
- The Smithsonian explores the changing ways Americans have measured, used, and thought about time.
- The Engineering Purpose: From Water Clocks to Cybernetics
(PDF) - Traces the concept of feedback-control in timekeeping from ancient to modern times. In pdf format.
- Time Pages, The
- Essay about the author's personal interest in time and a discussion of humanity's relationship to time. Also includes time quotes, time in fiction, conversion, and other information.
- Times of Our Lives
- The study of time and the various timetables and rhythms that shape our behaviours and thoughts.
- U.S. Naval Observatory - Time Service Department
- Provides the official time for the Navy, for the Department of Defence, and for the United States.
- Walk Through Time, A
- The evolution of time measurement, from the National Institute of Standards and Technology.
- What Time Is It In Indiana?
- Learn about the three different time arrangements in the Hoosier State.
- Wolfram Research: Time
- Provides descriptions of several standards of time.
|
