[Assistant Peter’s note: This post was written back in May by Karen Ahlstrom, Brandon’s continuity editor, but again it slipped through the cracks. I’m sorry, Karen!]

I knew I’d have to deal with it sometime, and it finally caught up with me today. My Master Cosmere Timeline spreadsheet has far too many relative dates, and not enough absolutes.

Roshar’s date system

The biggest reason I have put it off is that the date system Brandon made up is both supremely logical and at the same time totally crazy. A year has five hundred days, but there’s also a thousand-day cycle with different highstorms around the new year. In each year there are ten months of fifty days each. The months are broken into ten five-day weeks. The date indicates what year, month, week of the month, and day of the week it is and looks like this: 1173.8.4.3. It is impossible for me to do the math in my head to decide what the date would be 37 days ago, so I don’t use the dates in my reckoning, and only calculate them as an afterthought. This dating system is also a hassle because two weeks in our world is almost three weeks there, and a month there is almost two of ours, and when writing Brandon doesn’t even pretend to pay attention to those differences.

Day numbers in The Way of Kings

But then we have to talk about my relative date system. The timeline of The Way of Kings is a mess. The story for Shallan starts more than 100 days earlier than Dalinar’s storyline. And Kaladin is roughly 50 days different from that. So for that book I had to pick a day when I knew there was crossover between the viewpoints and work forward and back from there. So a date in The Way of Kings might be marked on my spreadsheet as D 23 or K -57.