Tomorrow: It's not a question of when, but where! (family)

Vanessa Madu explores the mathematics of time keeping across the globe

Why does the International Date Line look like it was drawn by a toddler? On a globe, drawing a line that separates one day from the next sounds simple enough. So why does it zigzag across the Pacific Ocean in a way that looks like a mistake?Mathematician Vanessa Madu is here to explain. Join her as she investigates the surprisingly mathematical problem of keeping track of time on a spinning sphere. Along the way, you'll discover why the Date Line exists in the first place, how centuries of history and geopolitics have bent it wildly out of shape, and the surprising mathematical consequences that mean now, for two hours a day, there are three calendar days happening all at once.Blending mathematics, geography, history and a good amount of curiosity, this talk explores how what should be a simple straight line on a map tells a remarkable story of the unexpected things that can happen when maths meets human decision making.