Close-up https://www.childrensheartfoundation.org/ https://mojo.redhat.com/external-link.jspa?url=https%3A%2F%2Fwww.heart.org%2F. Volunteering Red Hat sponsors several large volunteer activities throughout the year, including World Environment Day, 9/11 Day of Service, Red Hat Cares about A Cure for Cancer, Red Nose Day, MLK Day of Service, and We Are Red Hat Week, our celebration of Red Hat’s brand and culture.