It’s unclear whether Hypnotic Sample will work at the hours of darkness. As written, it would be up in your DM to make your mind up. Individually, I'd personally rule that the Hypnotic Pattern is produced of light as it's an illusion and would, as a result, be noticeable at https://patronhipnotico64207.tblogz.com/top-guidelines-of-patron-hipnotico-47875999