FIELD: clocks and other time meters.
SUBSTANCE: invention relates to time devices, including chronometers or astronomical clocks, configured to determine in real time the boundary of the starry sky visible on the southern or northern hemisphere, depending on which map of the starry sky is used in the clock. Time device comprises a housing, a dial, a clock mechanism, a pointer mechanism and additionally comprises: moving star chart mechanism, kinematically connected to the clock mechanism and containing at least two coaxially installed discs rotating in different directions relative to the common axis of rotation, wherein on one movable disc the boundaries of the visible regions of the starry sky are indicated for different latitudes, wherein each boundary is highlighted for unique identification of latitude, and 24-hour time scale plotted along the outline of the circumference of the disc, and a map of the starry sky is plotted on the second movable disc; scale of cities, located on the dial and containing 24 names of settlements according to the number of time zones, wherein each city refers to a specific time zone of 24, wherein each city of said scale is highlighted so as to uniquely identify the latitude of the populated area; universal indicator for selecting a city / time zone for determining the visible boundary of the starry sky region for the selected city / time zone; mechanism for selection of city / time zone.
EFFECT: creation of a clock mechanism, which enables to display the visible boundary of the starry sky in certain time zones of the southern or northern hemisphere, depending on which hemisphere map is used in the clock, and perform simultaneous indication by means of mechanical clock drive as world time (time simultaneously in different cities of the world), and star map at a given moment in time for the selected city (selected latitude and longitude); proposed mechanism is easy to manufacture, which increases its reliability; possibility of determining approximate coordinates of celestial objects and possibility of simultaneous determination of current time in all time zones of the world.
39 cl, 11 dwg, 1 tbl
