Tell time with nature.

Telling time using nature involves observing changes in the environment such as the position of the sun, the moon, and stars, along with animal and plant behavior. Here are a few ways to tell time using nature:

1. Sun tracking: The sun rises in the east and sets in the west, following an arc in the sky. At noon, the sun is roughly at its highest point in the arc, halfway between sunrise and sunset. By observing the sun's position and angle, you can estimate the current time.

2. Stick method: Place a straight stick vertically into the ground in an open area. Observe the shadow it casts on the ground. In the morning, the shadow will be at its longest and will shorten until noon when the shadow is the shortest. The shadow will lengthen again in the afternoon. You can use the changing length and direction of the shadow to estimate the time.

3. Moon phases: The moon changes phases throughout the month as it orbits Earth. By knowing the specific phase and observing the moon's position in the sky, you can estimate the time of night. For example, during a full moon, the moon rises as the sun sets, so a full moon directly overhead would indicate it is around midnight.

4. Star positions: The stars rotate around the celestial poles throughout the night. By understanding some basic astronomy, you can identify specific stars like Polaris (the North Star) which remains fixed relative to the Earth's axis and estimate the time based on how the night sky is changing.

5. Animal behavior: Many animals are active during specific parts of the day, such as birds singing at dawn or crickets chirping at night. Observing when certain animals are active or when they settle down for the night can help you estimate the time.

6. Plant responses: Plants can also give indications of the time of day. Some flowers, like morning glories, bloom during specific times, while others, like evening primroses, open at night. Observing the opening and closing patterns of these flowers can help you tell the time.

Using these natural methods, you can approximate the time, but it's essential to remember that these techniques are not as precise as modern timekeeping tools.