Poke Test
Instead of watching the clock, or in addition to, artisan bakers can use the "poke test" to see if the dough is fully ready. Poke the dough about 1/2in deep with a floured finger. After you remove your finger:
If the indent slowly springs back or doesn’t recover at all, the loaf is ready to go in the oven.
If it springs back right away, give it more time, but no more than 3 hours total.
Lost track of time? Baking an hour or two early or late but will still result in a delicious loaf, but it may not rise as well and the crumb may come out more dense.