Please use the Silverstone Events app for a map of the track and built in timetable for the event. This is updated for the MotoGP and the F1 as well and no sign up is needed:
Google Play - https://play.google.com/store/apps/details?id=com.f1ss.venue.app&hl=en_US
App Store - https://apps.apple.com/gb/app/silverstone-events/id6448953849