SUNDOWN GEOLOGUE APP

This APP provides a graphic chart for the magnetic compass headings of the setting sun at time of sunset for any input latitude. The user inputs a latitude and obtains values of the compass heading in table format for 60 selected dates of the year.

The calculation internal to the APP is based upon the trigonometric formula devised by former NASA scientist, Samuel B. Bentley, and registered with the U.S. Copyright Office as article No.TXu 2-225-248.

The recreational value of a sundown walk with comparison of the compass heading of the setting sun with the charted values is the enhancement of your sundown walking experience.