Tuesday, Thursday, Today, Tomorrow

down the z axis, then across on the diagonal

fill the 3 liter to the brim and pour it into the 5. fill the 3 liter again and then pour into the 5 until the 5 is full. having poured 2 liters in addition to the existing 3 fills the 5 liter and this leaves 1 liter into the 3 liter. empty out the 5 liter. pour your 1 liter into the 5, then refill the 3 liter until full and pour that into the 5. now you have 1 +3 liters = 4 liters.