Snap! is a web-based application. Select a country then a city to display a representation of a sundial.

It shows the lines and shadows projected onto a fixed dial, and allows you to select from nearly 4000 cities.

In the drawing, a red line shows the current clock time, with midnight at the top, and noon at the bottom. If the sun is down, the complete dial is shaded; but if the sun is up, the sundial is lit, and its shadow is shown. The blue line indicates the current sun time.

The local clock time (with local timezone abbreviation) and sun time (in high accuracy) for the chosen location will be shown below the dial.

There may be a significant difference between the red and blue lines, especially if the city is currently using daylight saving / summer time, or if the city is very far east or west of the ideal centre of its timezone region.

A paid version (by subscription) is also available with extra features. See the following:
1-Year Subscription
3-Year Subscription

Locations are based on the Geonames database, timezone information is based on the latest zoneinfo database, and solar calculations are based on the VSOP database - making the computed results extremely accurate.

You can discuss this app in our forum here.

Snap - The Sundial App - Copyright © 2011 Relative Data, Inc & Spot-On Sundials.

Extra Credits & Copyrights:

Zoneinfo time zone database is in the public domain
Geonames location database is licensed under a Creative Commons Attribution 3.0 License
VSOP87 astronomy database is in the public domain

Astronomy and time algorithms - Copyright © 2011 Relative Data, Inc.
Dial image - Copyright © 2000-2011 Piers Nicholson, Spot-On-Sundials
All Rights Reserved