Countdown to International Dark Sky Week | April 13–20, 2026
Sign up for International Dark Sky Week updates by taking the pledge to protect the night.
What is International Dark Sky Week?
International Dark Sky Week is a global celebration of the night.
From the darkness needed for a restful night’s sleep to the activities we enjoy beneath the stars, the night plays a crucial role in protecting nocturnal wildlife ecosystems, advancing science and exploration, preserving cultural knowledge, and more.
Join us as we “go dark” this April to explore the wonders of the night and take action to protect dark skies worldwide.
Pledge
Sign the pledge to protect the night and keep connected through monthly email updates.
Explore
Discover the wonders and importance of the night through online activities and events held worldwide.
Take action
From quality lighting to educating others, learn how you can make a difference in your community.
Pledge to protect the night
Take a simple step that makes a big difference. By signing the pledge, you join a growing movement dedicated to reducing light pollution. You’ll also stay connected with the dark sky community through updates and invitations to ongoing events.
I pledge to protect dark skies through quality lighting choices that align with the Five Principles of Responsible Outdoor Lighting, helping create a world where the nighttime environment thrives for wildlife, people, and the planet.
Support dark sky conservation
By shopping DarkSky merchandise, you support initiatives that preserve darkness in communities around the world. You can also make a direct donation and become a member of DarkSky International, gaining access to valuable member benefits, including Nightscape, DarkSky’s quarterly magazine.
Protect the night: Partner with us
From hosting an International Dark Sky Week as a community partner, to signing on as an official event sponsor, we invite you to explore ways that you can participate and help grow the movement to protect dark skies and the nighttime environment worldwide.
Event sponsors
A special thanks to our event sponsors for making IDSW 2026 possible.
