How to Estimate Your Position Using Shadow Stick Navigation?

Creating a Shadow Stick

To create a shadow stick, find a straight tree branch or stick about 2-3 feet long. Push it into the ground so it stands upright, ensuring it’s straight and level. Wait for a short period, about 15-30 minutes, until the sun moves significantly. Use a small rock or stick to mark the end of the shadow at the initial position. Repeat the process and mark the new end of the shadow. Measure the distance between the two marks using a piece of string or a stick with evenly spaced markings. This distance will represent the angle of the sun’s movement.

Calculating Time and Latitude

Using a standard time, note the time it took for the sun to move one degree. This time can be estimated to be around 15 minutes for every degree of latitude. By measuring the distance between the marks on the shadow stick, you can estimate the time it took for the sun to move one degree. This information will allow you to calculate your latitude, as one degree of latitude is equivalent to one minute of time. Use a reference chart or a mental calculation to determine your latitude based on the time it took for the sun to move one degree.