Take a tour through the fascinating world of medieval time calculation. Find out how the calendar was structured, and time and life were organised in the Middle Ages, in a public talk and discussion in Durham Cathedral. Dr Philipp Nothaft from All Souls College, University of Oxford, will explore medieval star-craft, and the science of time-reckoning, including the dating of Easter. The details of medieval mathematics and the beautiful diagrams in which they were presented, and the long-running arguments over how best to tell the time will all be brought to life. The talk and discussion will take place from 15.00-17.00.

This event is part of the Being Human festival - the UK's only national of the humanities. As our festivals events are free, not everyone who asks for tickets come to our events. To make sure we have a full house, we allocate more tickets than there are seats. We do our best to get the numbers right, but unfortunately we occasionally have to disappoint people. Admission is on a first-come-first-served basis, so please arrive in good time for the start of the event.