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 your photoperiod:
1. Report for dates listed below.
2. Find your sunrise/sunset: Look-up
3. Calculate your daylength.
4. Report your daylength: Select "Daylight"
| Dates to Report | |
September 1 |
March 1 March 20 (Equinox) April 1 May 1 June 1 June 21 (Solstice) July 1 August 1 |
Report to the Map! |
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Photoperiod is the length of time between sunrise and sunset.
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