Microsoft's Windows Vista contains the "sidebar" feature which hosts "gadgets". The Sun Clock gadget exploits the Windows sidebar. As with other versions of Sun Clock, when it is open it displays a world map showing the time at user-defined locations. As you move your cursor over the map, the local time is displayed at every point the cursor touches.
The display changes over the year to reflect the advance and retreat of ice sheets, snow cover, and vegetation.
When the gadget is minimized, the world map appears on the side bar along with your other gadgets and continues to show the movement of the night-time shadow.
Note that in this illustration the analogue clock, the calendar and the currency monitor are standard Windows gadgets, they are not part of Sun Clock.
The properties of Vista gadgets can be set by clicking on the properties icon at the top right of each gadget. The Sun Clock gadget is just the same. Click on the properties icon (a little spanner head) and a pop-up window appears. Click on "Select locations to display" and choose from a list of over 4,000 cities. Alternatively you can define your own locations by entering the place names and their latitudes and longitudes.
Any updates in Windows time zones are automatically reflected in the Sun Clock gadget.
The Sun Clock gadget comes with a 30 day free demo period. When you buy a licence you will receive a licence number linked uniquely to you user name which will unlock the Sun Clock gadget indefinitely. A single-user licence can be bought for 15 UK Pounds (approx 29 US$).