The University of Manchester at Sunset (IMAGE) University of Manchester Caption This image shows the University of Manchester at sunset, illustrating how we tell the time by color. Credit David Gennard, The University of Manchester Usage Restrictions Please credit David Gennard, The University of Manchester 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.