The rules indicate that timing begins upon starting Chapter 1 and ends upon "reaching the credits". The first part is straightforward enough, but the second part is rather unclear and can lead to inaccurate times. For example, OverworldYT ends time when the credits fly in, while Ghost3806 and BlazingJames end time when the screen fades to black. Personally, I think that the best place to end time is once you talk to Base Cleph (the grey man with the clipboard) right before the credits. Upon initiating conversation, all player input is disabled, meaning the game essentially ends then and there. And since this is a specific event, this would allow for more accurate times in the players' runs (including my future run, which will hopefully be sub-40). Accidentally posted this in the Guides section, my b.