Explore how day length changes in your part of the world as the Earth revolves around the Sun. Share and compare observations with people around the globe.

Report Daylight Monthly

1. Report once per month according to the dates listed below.

2. Find your sunrise/sunset: Google "sunrise" and record. Then Google "sunset" and record.

3. Calculate your day length, called photoperiod. Photoperiod is the length of time between sunrise and sunset.

4. Report your day length: Select Daylight

Photoperiod Map	Dates to Report	Guiding Questions for Map Analysis

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