High-Definition Sun Clock
Sun Clock is a program for Windows to show the local time around the world and the areas of the globe which are in night or day. Sun Clock 7 is available in three editions:
- A free edition
- A single-user personal edition
- A corporate customized edition
Figure 1: The free edition of Sun Clock 7 displays the Map Maker logo. Here Sun Clock 7 is shown in wide-screen format
Figure 2: The image of the globe is centred on your chosen home location. The time and compass bearing of sunrise, sunset, moonrise and moonset are shown, as well as, optionally, the direction to Mecca (Qiblah)
In all editions of Sun Clock 7:
- The surface of the world is represented using satellite imagery from the NASA Goddard Space Flight Centre enhanced with 3D terrain data to give a colourful portrayal of the physical geography of the planet. The image has been enhanced to change subtly throughout the year reflecting the seasonal advance and retreat of ice caps, snow cover.
- The moving shadow covers the area on the globe where the sun is below the horizon. Where neither the sun nor the moon can be seen, the shadow is darker still.
- As an area becomes covered by the night-time shadow, town and city lights are turned on. Their brightness is in proportion to the population size.
- You can overlay the maps with an image of global cloud cover. The clouds layer makes use of public domain satellite photographs. The images are updated approximately every three hours. However, the cloud layer is dependent on NASA, The University of Dundee, and XPlanet, so the quality and the continuing availability of the service is beyond our control.
- You can place boxes on the map to display the local time continuously at your chosen locations. The boxes are white before noon, after noon they are yellow. As the cursor is moved across the land areas of the map the local time is displayed.
- You can choose the named locations that display on the map from a database of more than 7000 cities, or enter your own additional locations.
- You can choose to display the different time zones in bands of colour.
- The current phase of the moon is displayed in the centre of the analogue clock.
- You can translate Sun Clock into languages other than English.
- The Sun Clock world map can be used as your screen-saver.
- If your computer is using multiple monitors you can specify which monitor to display Sun Clock on.
Figure 3: The analogue clock shows the local time at your chosen home location. The centre of the clock shows the current phase of the moon.
The free version of Sun Clock runs as the full single-user personal edition for the first 30 days after which, if you have not purchased a licence, the features exclusive to the licensed edition become unavailable.
The single-user personal edition
Figure 4: The single-user personal edition allows you to use the world map as your desktop, with or without the clouds layer
Figure 5: The world map on the single-user edition of Sun Clock 7 displays astronmical data. Here Sun Clock is shown on a regular-format screen. All editions of Sun Clock 7 can also be displayed in a wide-screen format.
If you purchase the single-user personal edition the Map Maker banner and logo beneath the map is replaced with astronomical information, such as the time of sun and moon rise and set. The single-user personal edition of Sun Clock 7 also includes:
- A sky view that shows the day and night sky from your chosen location. The sky view shows the sun's path, the constellations, and more.
- The option to choose a "wall display" mode which, like the screen saver, occupies the entire screen including the task bar area making it suitable for use as wall clock.
- The option to use the world map, with or without the clouds layer, as your desktop, updated every minute.
- A clock page with a large analogue clock face showing your local time plus a listing of local times at your other chosen locations.
- The sky-view and the clock page can be used as screen savers as well as the world map.
A licence for the single-user personal edition costs 25 UK pounds (plus VAT). The free edition of Sun Clock, when first installed, will run for 30 days in demo mode with the full functionality of the licensed personal edition.
Figure 6: The sky view during the day shows the sun's path for today as well as for the other months of the year.
Figure 7: The sky view changes at sun set
Figure 8: The sky view at night shows, constellation, planets, the milky way, the plane of the ecliptic, and the galactic equator.
Figure 9: The earths shadow shows lunar eclipses
Figure 10: The clock page displays a large year clock plus a listing of the times at your other chosen locations.
For details of corporate customized Sun Clocks see the Customized Versions page
Sun Clock 7 is designed for Microsoft Windows (XP and above - Windows 7 is recommended). Sun Clock will function with both 32-bit and 64-bit Windows. Sun Clock 7 has been designed for high-definition screens (1920 x 1080 pixels) though it will also run happily on lower definition displays. No internet connection is required to run the program. The program and its data occupy approximately 140Mb.