This is the second time someone has mentioned dying of thirst on day 1, it’s not supposed to kill you that fast. Thirst increments once every 5 minutes, and doesn’t have a chance to kill you until it reaches 1200, so 2400 minutes = 1000 hours = 4+ days, so I’m not sure what’s happening.
Various things, like being extremely hot, having a cold, vomiting, and eating salty foods increase your thirst faster, but even if you’re scalding hot AND have a cold and the flu, it should only increase thirst rate by 50% or so, meaning you’d dehydrate to death on day 3 or so.
I’ll have to look into this.