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Time
- info |
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Horizontaal |
Latitude and longitude  |
| Geographic
names (TGN) thesaurus of Geographic Names (TGN), is a structured vocabulary of geographic names,
Oosterzele: lat: 50 57 N long: 003 48 E |
| Latitude and longitude search engine
Latitude and longitude lookup, a tip |
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Time
related topic: Date and Time calculators |
| Atomic time
caesium clock, national time scales, pulsars as clocks |
| A walk through time
the evolution of time measurement through the ages |
| Cesium
Atomic Fountain Clock This page contains some background on laser cooling
and trapping, and general fountain |
| Greenwich 2000
Greenwich defines both time and place for the whole world. All time is measured relative to Greenwich mean time (GMT) and all places have a latitude
(their distance north or south of the equator) and a longitude (their distance east or west of the Greenwich meridian) |
| Greenwich information about
time zones: Greenwich Mean Time (GMT) |
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Longitude and Time Zones |
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Map Location and
Time Zones |
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Sundials
The earliest and simplest form of sundial is the shadow stick. The time of day
is judged by the length and position of the stick's shadow |
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Sundials
The simplest sundial is a vertical stick rising from a flat horizontal surface,
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Systems of Time
Atomic Time, Universal Time (UT), Coordinated Universal Time (UTC), Dynamical
Time, Geocentric Coordinate Time (TCG), Barycentric Coordinate Time (TCB) |
| Timekeeping
Find out about atomic time, Universal Time, civil time, local time, sidereal
time and solar time, measurement of time, leap years, Leap seconds |
| Time
Service Home Page |
| Time
zone abbreviations |
| Timezones |
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Timezones |
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Time zones
described the world is divided into a number of standard time zones. Roughly
speaking, there are 24 time zones spaced at intervals of 15° in longitude |
| Watches |
| What is universal
time? in the most common civil usage, UT refers to a time scale called
"Coordinated Universal Time" (abbreviated UTC), which is the basis for the
worldwide system of civil time. This time scale is kept by time laboratories
around the world, including the U.S. Naval Observatory, and is determined using
highly precise atomic clocks |
| World time zone map
printable time zone map |
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World time zone map |
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Horizontaal |
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Greyline propagation map
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Last updated on:
2008-06-12
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