Scroll through history at a glance. Easily compare periods, lifespans, reigns and events, or anything else you think of. • Zoom in to a day-to-day level or out to see millions of years at a time. • View from 20 BILLION years ago to 20 BILLION years in the future. • Comes with sample timelines: Geological Time Periods World civilisations US Presidents English Monarchs Chinese Dynasties • Create your own