All afternoon from midday. Like all saunas it’s hit and miss. That said, naked day is definitely a magnet for people who want to show what they have and be more likely to progress to action (as opposed to buzzing around like nervous flies). Take your chance and the worst that can happen
Is a pleasant stream and soak.
Nb - This advice applies to all the newbe “I’m thinking of going… what’s it like?” questions.
