International Cloud Appreciation Day is September 12

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September 12, 2025, is Cloud Appreciation Day. The international online event is organized by the Cloud Appreciation Society, which has more than 60,000 members in 120 countries. According to the Cloud Appreciation Society:Once a year, on Cloud Appreciation Day, people from around the world pause to look up. Cloud gallery from EarthSky Community membersMore cloud photos from EarthSky Community membersSubmit your own cloud image to the EarthSky Community Photo page. Additional cloud gallery from EarthSky Community membersBottom line: Cloud Appreciation Day is September 12, 2025.