Multi-time-zone synchronous display clock

Abstract

The utility model discloses a kind of multi-time zone synchronous display clock, including clock operating mechanism, the display dial of 24 hours identification, and make several time zone pointers keep relative angle position fixed and with synchronous rotation synchronous mechanism;Synchronous mechanism is set with each time identification intersection position on, dial center and line respectively all set with a pointer fixed point;Several distinguishable pointers can be replaced fixed on, according to the same time each time zone time identification corresponding pointer fixed point, dial is set with replaceable sector window mark on, inside time identification.The utility model is with fixed dial+synchronous mechanism+replaceable pointer to realize multifunctional integration;With replaceable connection+intuitive alignment without angle calculation, align number by vision;Pointer position intuitively indicates time difference, sector window changes from calculation to observation for meeting time judgment;Physical operation provides tactile feedback, and erasable surface realizes personalized customization;User can add or delete time zone, without tool or reprogramming.

Description

Technical Field

[0001] This utility model belongs to the field of time display device design and application technology, specifically relating to a multi-time zone synchronous display clock. Background Technology

[0002] With the increase in globalization, cross-time zone display and global synchronous communication have become commonplace. Currently, the following solutions exist for cross-time zone display and synchronous communication:

[0003] Using multiple clocks displayed on walls for different time zones is a solution that, when hung in hotel lobbies or international organizations, takes up a lot of space, creates visual clutter, and makes it impossible to intuitively compare time zone relationships.

[0004] Digital multi-time zone display devices are used; such as the multi-time zone timer display in patent application US5907523A and the multi-time zone clock display method and device in patent application CN104898399A. The information of the above solutions is listed in a list format, lacking visualization of the spatial relationship of time zones, and cannot help identify the meeting time window.

[0005] The invention employs a single-dial, multi-hand world clock; for example, patent application US9785120B2, a world watch, which discloses a bezel engraved with city names, but requires manual calculation of time differences; patent application JP2013516607A, an international clock dial, which uses three concentric rotating discs to display the city, hour, and minute; and patent application CN105955012B, an electronic device and time correction method. The above solutions have fixed cities that cannot be customized, requiring users to mentally calculate the current time of a specific city, and do not support visualization of meeting windows.

[0006] For cross-time zone collaboration, existing solutions include using collaborative meeting scheduling software, such as the automatic time zone update in the collaborative work system in patent application US11175816B2, and the information management system with time zone information in patent application US10909506B2, both of which use intelligent methods for coordination and selection; however, the above solutions are purely digital interfaces, lack the intuitiveness of physical interaction, require network connection, and have a steep learning curve.

[0007] Patent application CN2167393Y is for an international standard clock. This application uses a 24-hour dial and a rotating pointer dial, but the hour hand is fixed in a specific position on the dial, the user cannot customize the time zone, and it also lacks a meeting window function.

[0008] Patent application CN2418501Y is an improved world clock. Although the application has 24 time zone indicator arms that rotate synchronously, the time zones are fixed to preset cities and cannot be dynamically adjusted according to user needs. It also lacks a visual indicator of collaborative working time.

[0009] Patent application US20050105397A1 Global Time System; This application provides a multi-time zone display but uses a fixed time zone ring or spiral scale, and does not support replaceable pointers and meeting time window visualization.

[0010] In summary, existing technologies for cross-time zone display and global synchronous communication suffer from the following drawbacks: time zone relationships are not intuitive, making it difficult for users to quickly understand the relative time relationships between multiple time zones; meeting planning requires mental calculation, requiring users to calculate the time in each time zone and compare feasibility in their minds; lack of flexibility, with most products preset to fixed cities and unable to dynamically adjust according to the user's actual collaborators; heavy visual burden, with information overload or being too scattered; and a disconnect between physical and digital, with physical clocks being aesthetically pleasing but functionally limited, while digital solutions are powerful but lack interactivity. Summary of the Invention

[0011] This invention discloses a multi-timezone synchronous display clock to address the shortcomings of existing technologies. The purpose of this invention is to provide a clock device that achieves synchronous display of time in multiple time zones through a multi-pointer system with coaxial rotation, and enables visual coordination of cross-timezone meeting times by setting fan-shaped window indicators.

[0012] This utility model is achieved through the following technical solution:

[0013] A multi-time zone synchronous display clock, the clock being a 24-hour clock, includes a clock operating mechanism and a display dial with 24-hour time markers. Its features include: a synchronization mechanism that keeps several time zone pointers in a fixed relative angular position and rotates synchronously with a 24-hour cycle; a pointer fixing point is provided on the synchronization mechanism at the intersection of the line connecting the center of the dial and each time marker; several distinguishable pointers are interchangeably fixed to the pointer fixing points corresponding to the time markers of each time zone at the same time; replaceable fan-shaped window markers are provided on the dial inside the time markers; the fan-shaped angle of the fan-shaped window markers is 30–180 degrees, capable of indicating a time range of 2–12 hours.

[0014] Furthermore, the synchronization mechanism includes: an hour hand pivot located at the center of the dial, and a pointer dial that rotates synchronously with the hour hand pivot; a pointer fixing point is provided on the inner edge of the pointer dial and at the intersection of the line connecting the center of the dial and each time mark.

[0015] Furthermore, the dial plane can be any geometric shape, the hour hand axis is connected and fixed to the center or near the center of the dial plane, and the maximum radial edge of the dial is located inside the 24-hour time mark.

[0016] Furthermore, there are a total of 24 pointer fixing points. Each pointer fixing point is pre-set with magnetic material, universal adhesive, or screw holes. The corresponding pointer is a magnetic pointer, a pointer with a pre-set universal adhesive, or a pointer with a pre-set screw, which is used to detachably and replaceably fix it to the pointer fixing point on the pointer dial.

[0017] Furthermore, the center of the dial also includes minute hand pivot and second hand pivot coaxial with the hour hand pivot, and the minute hand and second hand are fitted together.

[0018] Furthermore, the distinguishable pointers are pointers distinguished by color, pointers distinguished by shape, or pointers distinguished by text markings.

[0019] This utility model of a multi-time zone synchronous display clock can be applied to physical mechanical clocks, electronic display devices, or virtual software applications. The fan-shaped window indicator is fixed to the dial load on physical mechanical clocks and electronic display devices by adhesive or magnetic attachment; in other display devices, it is set by virtual drawing or coloring in the virtual clock display section.

[0020] This utility model of a multi-time zone synchronous display clock improves the user experience. It is easy to operate, requiring no complex calculations. During calibration, the target time zone can be directly queried without calculating time differences or angles. It is visually clear, with a single dial integrating information from multiple time zones, avoiding the visual clutter of multiple clock walls. It enables rapid decision-making, and the fan-shaped window design transforms meeting time planning and collaboration from "calculation" to "observation".

[0021] This utility model of a multi-time zone synchronous display clock is highly flexible, allowing users to add or remove time zones as needed without being restricted by a fixed design; the clock is highly adaptable, and daylight saving time adjustment can be achieved simply by manually moving the pointer one notch; the clock has good expandability, with the basic version only displaying hours, but it can be expanded to include minute display, second display, time backtracking and other functions.

[0022] This utility model of a multi-time zone synchronous display clock is designed for cross-time zone collaborative scenarios, meeting the needs of international cross-time zone display and global synchronous communication; it can be used as a functional decoration in homes, offices, conference rooms, and other homes; at the same time, it can be realized in multiple forms and can be applied to physical clocks, electronic screens, mobile applications, and other fields.

[0023] This utility model of a multi-time zone synchronous display clock is not limited to digital display, but can also provide a spatial display of time zone relationships; this utility model of a multi-time zone synchronous display clock can avoid complex spiral structures and reduce manufacturing difficulty; by adding a replaceable fixed pointer module and a fan-shaped conference window function, information overload is reduced; its pointer can be adjusted independently, and users can configure the time zone themselves instead of a fixed city.

[0024] This utility model of a multi-time zone synchronous display clock has the following innovations and advantages.

[0025] Structural Innovation: Utilizing a fixed dial + rotating pointer dial + replaceable pointer settings, it achieves multi-functional integration. Positioning Innovation: Employing replaceable connections and intuitive alignment, it eliminates the need for angle and time zone calculations, relying solely on visual alignment of the numbers. Visualization Innovation: Differences in pointer position intuitively represent time differences, and the fan-shaped window transforms "meeting time judgment" from calculation to observation. Interaction Innovation: Physical operation provides tactile feedback, and the erasable pointer dial surface allows for personalized customization. Modular Innovation: Users can add or delete time zones at any time without tools or reprogramming. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a multi-time zone synchronous display clock plane of this utility model.

[0027] Figure 2 This is a schematic diagram of another embodiment of the multi-time zone synchronous display clock of this utility model.

[0028] In the diagram, 1 is the dial, 2 is the time marker, 3 is the fixed point of the pointer, 4 is the hour hand axis, 5 is the pointer, 6 is the fan-shaped window marker, and 7 is the clock face. Detailed Implementation

[0029] The present invention will be further described below with reference to specific embodiments. These specific embodiments are further explanations of the principle of the present invention and are not intended to limit the present invention in any way. Any technology that is the same as or similar to the present invention does not exceed the protection scope of the present invention.

[0030] This utility model relates to a multi-time zone synchronous display clock with a 24-hour system. It includes a clock operating mechanism, a display dial with 24-hour time markers, and a synchronization mechanism that keeps the hands of several time zones in a fixed relative angular position and rotates synchronously with a 24-hour cycle. A pointer fixing point is provided on the synchronization mechanism at the intersection of the line connecting the center of the dial and each time marker. Several distinguishable pointers can be interchangeably fixed to the corresponding pointer fixing points according to the time markers of each time zone at the same time. Replaceable fan-shaped window markers are provided on the dial inside the time markers; the fan angle of the fan-shaped window markers is 30–180 degrees, and they can indicate a time range of 2–12 hours.

[0031] This invention relates to a synchronization mechanism that keeps the relative angular positions of several time zone hands fixed and rotates synchronously with a 24-hour cycle. The mechanism includes: a pointer disk, multiple concentric rings, a radial support, a magnetic coupling system, gear linkage, software virtualization, and other synchronization mechanisms capable of achieving fixed relative positions and synchronous rotation of multiple hands. For example: the multiple concentric rings use multiple independent rotating rings instead of a pointer disk; the radial support uses a spoke structure to connect the hands; the magnetic coupling system uses magnetic force without physical connection to synchronize the multiple hands; the gear linkage uses independent pointer shafts but synchronizes through gears; and the software virtualization uses a virtual display of synchronized hands on an electronic screen.

[0032] This embodiment of the multi-time zone synchronous display clock synchronization mechanism is described with an hour hand axis set at the center of the dial and a pointer dial that rotates synchronously with the hour hand axis. A pointer fixing point is set on the inner edge of the pointer dial and at the intersection of the line connecting the center of the dial and each time mark; several distinguishable pointers can be replaced and fixed on the pointer fixing points corresponding to the time marks of each time zone at the same time.

[0033] In this embodiment, the dial plane can be any geometric shape. The hour hand axis is fixed to the center or near the center of the dial plane, and the maximum radial edge of the dial is located inside the 24-hour time marker. The dial can be any geometric shape such as round, elliptical, square, or triangular, which can clearly show its rotation and provide a better and clearer visual experience. The fixed center can be set at the center of symmetry of the dial, or it can be set near the center of symmetry of the dial. Setting the fixed center near the center can further improve the rotation shape of the dial and improve visibility and display effect. Regardless of the structural form, the maximum radial edge of the dial is located inside the 24-hour time marker and cannot cover or obscure the 24-hour time marker.

[0034] The dial is made of transparent, semi-transparent, or opaque material.

[0035] There are 24 pointer fixing points, each pre-installed with magnetic material, universal adhesive, or screw holes. The corresponding pointers can be magnetic, glued with universal adhesive, or secured with pre-installed screws, allowing for easy removal and replacement of the pointers on the dial. Pointers are located on the inner edge of the dial, at the intersection of the line connecting the dial center and each time marker, to fix the pointers. Since the dial has various structural designs and rotation modes, placing the pointer fixing points at the intersection of the line connecting the dial center and each time marker ensures that each pointer accurately points to the corresponding time marker regardless of its structural form or rotation mode. The choice between magnetic material, universal adhesive, or pre-installed screws can be made according to the specific requirements.

[0036] The center of the dial also includes minute and second hand pivots coaxial with the hour hand pivot, and houses the minute and second hands. For more precise time display, the minute and second hands are typically positioned above the dial, depending on the clock mechanism and the function and structure of the display dial.

[0037] Theoretically, there can be 24 pointers, as long as they can be clearly distinguished visually, such as by using different colors, shapes, or text labels.

[0038] The clock operating mechanism can be a mechanical movement, an electronic movement, or a time display operating mechanism mounted on other display devices. The corresponding display clock can be a mechanical display clock, an electronic display clock, or a virtual clock display component mounted on other display devices. The so-called time display operating mechanism mounted on other display devices and its virtual clock display component refer to any existing interface-integrated timing chip and its time display system.

[0039] To facilitate cross-time zone time coordination, this invention also includes a replaceable fan-shaped window indicator on the dial inside the time marker, and proposes a method for cross-time zone time coordination of multi-time zone synchronized display clocks; including the following steps:

[0040] S1. A replaceable fan-shaped window indicator is provided on the dial inside the time indicator; the fan-shaped angle of the fan-shaped window indicator is determined according to the range determined by the common working time of the main time zone, and the fan-shaped window indicator covers the working time period determined by the main time zone.

[0041] like Figure 1 As shown, this embodiment uses a 6-hour working time range for the main time zone, with the identifier covering times from 6 to 12. Figure 2 As shown, the main time zone in this embodiment uses a 9-hour working time range, with the markings covering times from 9 to 18.

[0042] S2. Determine the working time point of the main time zone. The time zones corresponding to the main time zone hour hand and the pointers of each time zone within the fan-shaped window are the time zones that can be synchronized and coordinated.

[0043] like Figure 1 As shown, this embodiment allows two time zones to work together. Figure 2 As shown, this embodiment has three time zones that can work together.

[0044] The fan-shaped window markings are fixed to the dial load on mechanical and electronic display clocks by pasting or magnetic attachment; in other display devices, they are set by virtual drawing or coloring in the virtual clock display section.

[0045] The fan-shaped window markers can be constructed from flat fan-shaped materials such as paper or plastic sheets, and can be colored to enhance readability. The fan-shaped window markers are fixed to the corresponding positions on the dial by adhesive or magnetic attachment. The radial length of the fan-shaped window marker should be less than the radius of the time markers on the dial to avoid obscuring them. The angle of the fan-shaped window marker determines the time range it covers or includes, aiming to visually observe the time range within which different time zones can work together, typically based on the primary working time. For example, if the primary working time is six hours per day, and the desired collaborative working time is within the primary working time, the fan-shaped window marker should cover or include the six-hour range. Based on the six-hour coverage area in a 24-hour clock, a fan-shaped window marker with a 90-degree angle is used, covering the primary working time from its start to its end. After determining the primary time zone's working time point, the time zones corresponding to the primary time zone's hour hand and other time zone hands within the fan-shaped window marker are the time zones that can be synchronized.

[0046] The present invention will now be described in detail with reference to specific embodiments.

[0047] This embodiment adopts a structure of "coaxial rotating pointer disk + magnetic positioning pointer + fixed time window".

[0048] First layer: One-piece dial case, including 24-hour time markers and fan-shaped window markers; Second layer: Transparent dial with magnetically attached hands for multiple time zones; Third layer: 24-hour clock movement.

[0049] Working mechanism: The clock movement drives the transparent dial to rotate in a 24-hour cycle; all magnetic hands are fixed on the dial and rotate synchronously with it; the relative positions of each hand on the dial remain unchanged, but they point to different numbers on the dial. Different numbers represent the time points in different time zones at the same time. The relative difference in the position of the hands equals the time difference of the time zone. The fixed fan-shaped window does not rotate. When the hands rotate and pass through the fan-shaped window markings, it indicates that the time zone has entered a time for collaborative work or meetings.

[0050] Taking a physical clock as an example, the components include:

[0051] The watch features a unibody dial and case assembly. The dial is circular, with a diameter of 12 inches (30.48 cm). The front edge is evenly distributed with 24 numerals from 0 to 23. These numerals can be CNC-engraved directly onto wood or laser-cut from plastic sheets and then pasted on. There is a hole in the center with a diameter of approximately 8-10 mm for the movement shaft to pass through. The material is CNC-milled hardwood, such as walnut, maple, or plywood, or laser-cut acrylic sheets. The dial and case are designed as a single unit.

[0052] The fan-shaped window sign is made of semi-transparent colored fan-shaped pieces, such as light green or pale yellow, cut to cover a specific time range, such as... Figure 1 It corresponds to a 90° sector from 6:00 to 12:00; or as... Figure 2 It corresponds to a 135° sector from 9:00 to 18:00; the thickness is 0.5 to 1mm; it can be fixed to the dial with small screws or double-sided tape; the material is colored acrylic or translucent plastic sheet or paper.

[0053] The rotating pointer assembly features a transparent pointer dial, a circular transparent disc with a diameter of 6 inches (15.24 cm); the material is transparent acrylic, glass, or 3D printed transparent resin; the thickness is 3-5 mm, and the center hole is fixed to the output shaft of the clock movement, with a flat surface for magnetic adsorption.

[0054] Magnetic time zone pointer; the number of pointers can be customized up to 24; the pointer body adopts a slender arrow-shaped structure, 2-3 cm in length, and is made of wood, or 3D printed PLA / ABS plastic, JP55 resin; the pointer tip has a clearly visible arrow or triangle; the magnet is a 2mm side-length neodymium magnet (N35 grade), embedded in the bottom of the pointer; the writeable surface has a white area on the pointer, which can be used to mark city names with an oil-based pen and then erased; different colored pointers are used to distinguish time zones, such as red, blue, green, yellow, etc.

[0055] The power system uses a 24-hour clock movement; such as a standard quartz 24-hour movement, the hour hand output shaft is directly connected to the transparent dial, and rotates 360° in a 24-hour cycle; optional expansion is available by adding a minute hand, second hand or a small display to show precise minutes.

[0056] The power system uses 1 to 2 AA batteries or 5V USB power for the standard quartz movement.

[0057] Optional advanced components are available, including a stepper motor instead of the standard mechanism in the electronically controlled version, or a Raspberry Pi Zero or Arduino microcontroller, or a small OLED / LCD display (to display minutes or other information); a knob or button can also be set for time rewind functionality.

[0058] Taking a physical clock as an example, the positioning principle of the time zone pointer is as follows:

[0059] The key element is that the number of clockwise increments each pointer makes on the transparent dial determines its time difference from the reference time zone.

[0060] The positioning method does not require angle calculation. A pointer is selected as the primary working time zone, i.e., the "local time zone", such as San Francisco. Other time zone pointers move clockwise by the corresponding number of divisions relative to the reference pointer according to the time difference. 1 division = 1 hour = 15°.

[0061] Example: Reference time zone: San Francisco (UTC-8), add New York (UTC-5): time difference +3 hours → move 3 units clockwise; add London (UTC+0): time difference +8 hours → move 8 units clockwise; add Tokyo (UTC+9): time difference +17 hours → move 17 units clockwise (or 7 units counterclockwise).

[0062] No calculations are required during calibration. Users only need to query the current time of the target time zone, such as via mobile phone or network, and place the pointer directly on the fixed point of the pointer pointing to that time. No angle calculations or complex mathematical operations are required.

[0063] Scenario example:

[0064] The user is in San Francisco, it's 2 PM now, and needs to add New York, London, and Tokyo.

[0065] Step 1: Set the local time zone pointer; Take the red pointer and mark "SF" with an oil-based pen. Magnetically attach the red pointer to the corresponding pointer fixing point on the transparent pointer dial. Rotate the pointer so that the pointer tip points to the number "14", ensuring that the pointer tip, the center of rotation, and the number "14" are collinear.

[0066] Step Two: Add the New York pointer; Method A: Check the current New York time. Use your phone to check the current New York time: 17:00. Take the blue pointer, label it "NYC", and magnetically attach it to the corresponding fixed point on the pointer dial. Rotate the pointer until it points to the number "17". No angle calculation is needed; simply observe whether the pointer is aligned with the number. Method B: Move the pointer by 3 increments. Since New York is 3 hours ahead of San Francisco, take the blue pointer, label it "NYC", and place it 3 increments clockwise from the reference pointer (SF). Rotate the pointer until the tip aligns with the number "17".

[0067] Step 3: Add the London pointer; check the current London time: 22:00 or know the time difference + 8 hours, take the green pointer, mark it "LON", rotate the pointer to point to the number "22", and repeat the above steps.

[0068] Step 4: Add the Tokyo pointer; check the current time in Tokyo: 07:00 the next day or know the time difference +17 hours, take the yellow pointer, mark it "TYO", rotate the pointer to point to the number "7", and repeat the above steps.

[0069] After completing the above steps, the time reading in the running state will show that as time passes, the clock mechanism drives the pointer dial to rotate 15° every hour, with all pointers maintaining their relative positions and rotating synchronously as a whole; after 1 hour, at 15:00 in San Francisco, the SF pointer → 15, the NYC pointer → 18, the LON pointer → 23, and the TYO pointer → 8.

[0070] Using a sector-shaped time window:

[0071] Combined with appendix Figure 2 To set the working time window: Take a semi-transparent green fan-shaped window identification piece, cover the sector from 9 to 18 (135°), and fix it to the dial with screws or double-sided tape. The fan-shaped window identification piece should remain stationary and not rotate with the hands.

[0072] Meeting time determination: When a pointer falls within the fan-shaped window, it means that the working time for that time zone is 9:00-18:00. When all pointers fall within the fan-shaped window at the same time, the current meeting time is acceptable for all time zones.

[0073] Example: such as Figure 2 As shown, at 14:00 in San Francisco, SF (14) is in the window, NYC (17) is in the window, LON (22) is not in the window, and TYO (8) is not in the window; the conclusion is that it is not suitable for a four-party meeting, but a two-party meeting between SF and NYC can be arranged.

[0074] Multi-timezone synchronized clock display with optional extended functions:

[0075] Minute display: Option A: Add a small digital display in the center of the dial to display the minutes; Option B: Add a traditional minute hand by sharing a movement shaft; Option C: Mark 60-minute scales on the edge of the dial.

[0076] The time rewind function is applicable to the electronic version; a stepper motor replaces the quartz movement, or the user can manually rotate the pointer dial via a knob to view the status of each time zone at a future or past moment, or the microcontroller records the real time and automatically rewinds after viewing.

[0077] Night mode adds a "sleep time" indicator outside the fan-shaped window, such as 0:00 to 6:00, to help users avoid making calls while others are sleeping.

[0078] This utility model of a multi-time zone synchronous display clock features: innovative structure with a three-layer architecture (fixed dial + rotating pointer dial + magnetic pointer) for multi-functional integration; innovative positioning with magnetic connection and intuitive alignment, eliminating the need for angle calculations and allowing users to simply align the numbers visually; innovative visualization with pointer position differences intuitively representing time differences, and a fan-shaped window transforming "meeting time judgment" from calculation to observation; innovative interaction with physical operation providing tactile feedback and an erasable surface for personalized customization; and innovative modularity allowing users to add or delete time zones at any time without the need for tools or reprogramming.

[0079] The multi-time zone synchronous display clock of this utility model has the following advantages:

[0080] Improved user experience and simplified operation: No complex calculations are required; simply query the target time zone during calibration without calculating time differences or angles. Clear visuals: A single dial integrates information from multiple time zones, avoiding the visual clutter of multiple clock walls. Quick decision-making: The fan-shaped window design transforms meeting time planning from "calculation" to "observation."

[0081] Functional advantages: Highly flexible, users can add or delete time zones as needed, without being restricted by a fixed design; Highly adaptable, daylight saving time adjustment only requires manually moving the pointer one notch; Good scalability, the basic version only displays hours, but can be expanded to add minute display, time rollback and other functions.

[0082] Market advantages: Clear target, designed for cross-time zone collaboration scenarios, meeting international time coordination needs; aesthetically pleasing and practical, serving as a functional decorative item for offices and meeting rooms; multi-form implementation, the same technical solution can be applied to physical clocks, electronic screens, and mobile applications.

[0083] Compared with existing technologies, this utility model of a multi-time zone synchronous display clock is superior to US5907523A, as it is not limited to digital display and provides a spatial time zone relationship display; superior to GB2375404A, as it avoids complex spiral structures and reduces manufacturing difficulty; superior to US8221125B2, as it adds magnetic modularity and conference window functions to reduce information overload; and superior to JP2013516607A, as the hands can be adjusted independently, allowing users to configure the time zone independently rather than a fixed city.

Claims

1. A multi-time zone synchronous display clock, the clock being in a 24-hour format, comprising a clock operating mechanism and a display dial displaying 24-hour time indicators, characterized in that: The device includes a synchronization mechanism that keeps the relative angular positions of several time zone hands fixed and rotates synchronously with a 24-hour cycle; a pointer fixing point is set at the intersection of the line connecting the center of the dial and each time mark on the synchronization mechanism; several distinguishable pointers can be replaced and fixed at the pointer fixing points corresponding to the time marks of each time zone at the same time; a replaceable fan-shaped window mark is set on the dial inside the time mark; the fan-shaped angle of the fan-shaped window mark is 30 to 180 degrees and can mark a time range of 2 to 12 hours.

2. The multi-time zone synchronous display clock according to claim 1, characterized in that: The synchronization mechanism includes: an hour hand pivot located at the center of the dial, and a pointer dial that rotates synchronously with the hour hand pivot; a pointer fixing point is provided on the inner edge of the pointer dial and at the intersection of the line connecting the center of the dial and each time mark.

3. The multi-time zone synchronous display clock according to claim 2, characterized in that: The dial plane can be any geometric shape, and the hour hand axis is fixed to the center or near the center of the dial plane. The maximum radial edge of the dial is located inside the 24-hour time mark.

4. The multi-time zone synchronous display clock according to claim 2, characterized in that: There are a total of 24 pointer fixing points. Each pointer fixing point is pre-set with magnetic material, universal adhesive, or screw holes. The corresponding pointer is a magnetic pointer, a pointer with a pre-set universal adhesive, or a pointer with a pre-set screw, which is used to detachably and replaceably fix it to the pointer fixing point on the pointer dial.

5. The multi-time zone synchronous display clock according to claim 2, characterized in that: The center of the dial also includes minute and second hand pivots coaxial with the hour hand pivot, and is fitted with minute and second hands.

6. The multi-time zone synchronous display clock according to claim 2, characterized in that: The distinguishable pointers are pointers distinguished by color, pointers distinguished by shape, or pointers distinguished by text markings.

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