Holiday Lights on the Sun - A Solar Flare (VIDEO) NASA/Goddard Space Flight Center This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption The sun emitted an X1.8-class solar flare, peaking at 7:24 pm EST on Dec. 19, 2014. Credit NASA SDO Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.