How does brian measure time while in the wilderness?

In the novel "Brian's Winter" by Gary Paulsen, Brian Robeson uses different methods to measure time while he is stranded in the Canadian wilderness. Here are a few ways he keeps track of time:

1. The Sun: Brian observes the position and movement of the sun to estimate the time of day. He uses the sun's location in the sky as a clock, understanding that it moves from east to west over the course of the day.

2. Shadows: Brian also pays attention to the length and direction of shadows cast by trees and other objects. As the day progresses, shadows change position and length, which helps him approximate the time.

3. Sundial: Brian creates a makeshift sundial using a stick or other straight object stuck in the ground. By observing the shadow cast by the stick, he can determine the approximate time of day based on the angle and length of the shadow.

4. Stars and Constellations: At night, Brian studies the stars and constellations to gauge the passage of time. He becomes familiar with the movement and positions of various stars and uses them as markers to estimate the hours.

5. Body Rhythms: Brian gradually develops an internal sense of time based on his body's natural rhythms, such as hunger and sleep cycles. He learns to recognize the times when he feels hungry or sleepy and uses these cues to estimate the time of day.

These methods allow Brian to have a general understanding of the time without access to modern timekeeping devices. However, it's important to note that his measurements are not precise, and he may sometimes misjudge the time due to factors like cloud cover or changes in weather.