How long can a person walk through the desert if the air temperature is 26 degrees and the traveler’s water supply is 10 liters?

So that a person is not particularly hot, light clothes and a hat are needed. Also, try to be active at night. And so the temperature is not particularly high, on average a person in this weather drinks 1.5 – 2 liters a day, I think that there will be enough water for 5-6 days, the main thing is that there is food in the desert.