Universal world time and date clock

Details Universal world time and date clock Universal world time and date clock

1982-06-14

1984-05-08

Roskoski, Bernard

Horology: time measuring systems or devices

Plural time zones

With a world globe

368 21, G04B 1922

Patent

active

044471599

ABSTRACT:
A novel twenty-four hour clock (10) providing a continuous display representative of the rotation of the Earth relative to the heavens, and the changing position of illustrated geographic continents (33a, etc.) of the Earth relative to the fixed position of the Sun, thereby providing the viewer with a visual display of the local time of day and also the time of day in each of said geographic continents. The present clock (10) includes a continuous display of fixed indicia (35a and 36a) representative of a location in the heavens, 180.degree. around the Earth from the fixed location of the Sun, coinciding with the occurrence of midnight at each geographic area of the Earth as said geographic area passes thereby, the geographic area in which the Fiji Islands and New Zealand are located being designated the International Date Line (30). The present clock (10) also includes moving indicia (35 and 36) of the changing geographic portions of the Earth existing under the new day and the old day as concurrently experienced in different geographic areas of the Earth, thereby providing the viewer with a visual indication or, if desired, digital identification (52, 53) of the local calendar day and the calendar day in each of said continents.

REFERENCES:
patent: 536504 (1895-03-01), Arriga
patent: 694256 (1902-02-01), Day
patent: 2603940 (1952-07-01), Packard
patent: 2721442 (1952-06-01), Pettigrew, Sr.
patent: 3091915 (1963-06-01), Pawl

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