Abstract: A time zone tutorial device includes: a panel on which a time circle is disposed, the time circle being divided into 24 equal parts, the 24 equal parts being sequentially counterclockwise marked with numerals to represent time; a time zone turntable disposed on a front face of the panel, the time zone turntable having the form of a disc, the time zone turntable having an Equator circle marked with 24 time zones; an indicator positioned on a rear face of the time zone turntable and synchronously rotatable with the time zone turntable, the indicator having an indication section; and a connection member for sequentially connecting the time zone turntable, the indicator and the panel, whereby the time zone turntable is rotatable relative to the panel.

Abstract: The invention provides a tutorial device for observing lunar phase. A base sheet is inscribed with a time scale, a ring of moon pictures and a ring of moon phases. Outer circles on the base sheet define the months, and times of moonrise, moonset and moonsharp. Mounted on the base are a rotary segment shaped moonguide, a globe longitude disc and an elevation disc with a graduated moon angle scale and a pivoted elevation finger. The movable elements are used in conjunction with the fixed rings and circles on the base sheet to obtain moon data for selected times and earth longitudes.

Abstract: It is a multi-globe system including the sun, the earth and the moon, and it mainly comprises a supporting frame, a power operation structure, an earth orbit base, a moon transmission structure, a sun structure, an earth structure, a calendar device, and a power supply device; it is substantially a mechanical transmission theory system so as to provide an artificial globe system to illustrate the revolution relation among the earth, the sun and the moon for teaching purpose, and to include a perpetual calendar system.