Summer Solstice
Sunlight and the Seasons | June 21, 2017  

It's the longest day of the year in the Northern Hemisphere. How do longer days affect seasonal happenings?

Report Your Day Length

Solstice dawn at Stonehenge. Photo by Taro Taylor CC BY 2.0

How to Report Your Daylight Hours

Step 1: Look up your sunrise/sunset for June 21, 2017.

Step 2: Calculate the length of time between sunrise and sunset.

Step 3: Report your day length for June 21.

Step 4: Explore daylight map.

Please report your observations
Report Your Daylight   Report Your Sightings
Sunlight and the Seasons
Earth's position on October 20th. Signs of Spring 2016
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Next Update: Equinox on September 22, 2017