Copernicus Satelite data hackathon in Latvia. How did it go?

I participated in a hackathon in Latvia that was aimed at Copernicus satellite data usage and application. Our international collaboration of 3 people got 3rd place. I will introduce: - the Copernicus hackathon structure and purpose. How to organize one. - Sentinel satellite data, how to get it, where to use it; - our and other projects from the hackathon.