Use your cell phone as a compass. By rotating the phone so that the sun and/or moon icons match their location in the sky, the top of the phone will indicate true north.

New Features in Version 4.1

• Fixed corruption of JAR file.
• Fixed failure to load world map on Nokia 3rd edition phones.
• Improved format of info on Nokia phones.
• Reduced size of JAR by compressing world map images.
• Enlarged list of valid time zones for a given location.
• Improved "Please Wait" form with cancel option.
• Restored "Color" display option.
• Restored display of GTM.
• New icon.

New Features in Version 4.0

• User interface reorganized.
• Select location and destination using world map or airport code.
• Automatic daylight saving time adjustment.
• Load and save favorite locations or destinations.
• Display heading, distance, and local time of destination.
• Set arbitrary date and time.
• 12 hour or 24 hour time display option.
• "Prayer Focus" feature removed (replaced by "Destination").
• "Color" display option removed.

New Features in Version 3.0

• Displays times of sunrise, sunset, sun transit, moonrise, moonset, civil twilight, nautical twilight, and astronomical twilight.
• Phase of moon indicated by crescent shaped icon.
• Improved calculation accuracy.

New Features in Version 2.0

• Enter 3 or 4 letter airport code to indicate position instead of latitude and longitude. Airport database contains over 3000 airports, but consumes only 21K.
• Latitude / longitude entry is still permitted, and the problem with negative number entry is avoided by selecting North / South and West / East.
• Shows the great circle heading towards locations of religious significance. This feature provides the appropriate direction to face while praying for people of various faiths.
• Orientation options allow the screen to face down rather than up, and the top of the phone can point toward the sun or moon rather than North.
• Display options allow the color of the display to be selected. Different colors are available for day and night.
• Menu provides "Help" option to describe each selection.
• Display is automatically updated every 10 minutes.
• Displays message "No Sun or Moon" if neither is present in the sky.

Compass Web Site

http://www.qcontinuum.org/compass