GEOCHRON - The Ultimate Timekeeping Device

The Geochron Global Time Indicator is a unique handcrafted world time device fusing functionality with elegant design.

The Geochron is the crowning achievement of inventor James Kilburg who created the Geochron in 1962. With only a glance the Geochron is able to tell you not only what time it is anywhere in the world, but also indicates the distribution of sunlight all over the world at any given moment. This unique function represents the primary reason Geochron is the time indicator of choice not only for international corporations, governments, educational institutions, and individuals all of the world, but also some of the world's most famous museums.

A true piece of art well ahead of its time. This timeless classic will maintain its technical prowess and one of a kind function well into the 21st century.

Geochron Models - Click on a model below for more info

Standard Geochron $1,595.00
Original Kilburg Geochron $1,695.00

Executive Model Geochron $2,295.00
Boardroom Model Geochron $2,580.00

click Image above for a detailed view of the Geochron World Time Clock features

The illuminated pattern on the Geochron's world map continually changes as the Earth rotates and each day progresses. It even displays the summer solstice, winter solstice, as well as spring and autumn equinoxes each year (example shown to the right).

The Geochron displays the following information:

Legal Zone Time
Greenwich Mean Time
Greenwich Apparent Time
Local Apparent Time
Local Mean Time
Moment of Sunrise
Moment of Sunset
Duration of Daylight
Sun’s Meridian Passage
Sun’s Equation of Time
Degrees Latitude
Degrees Longitude
The Geographic Extent of the Prevailing Day and Date

The Boardroom Model

Summer Solstice. The longest day of the year north of the equator.

Spring (and autumn) equinox. The two very brief moments of the year midway between summer and winter, during which the hours of light and darkness are equal at all latitudes.

Winter Solstice. First day of winter for the northern hemisphere and the first day of summer for the southern hemisphere.

Technical Features:

Housing is available in 9 laminate or 8 solid wood finishes.

Illuminated by two easily replaceable F15T8D fluorescent tubes.

Protective glass pane shields the facing side of the map.

Map has been reproduced in part from Chronaflex positives of the U.S. Naval Oceanographic Chart #1262 (Mercator Projection) and is printed on dimensionally stable Mylar.

The map is on an endless belt driven slowly from left to right using a precision electric clock motor that is synchronous with the Earth's rotation.

The Geochron can be surface or flush mounted, click here for mounting options.

Legal time zone information is based on data from U.S. Department of Defense Mapping Time Zone Chart #76. Includes all 24 "standard time zones as well as 16 "non-standard time" zone.

Earth Globe - brief history of earth globes, including the first American globes.

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