AN UNBIASED VIEW OF PATRON HIPNOTICO

It’s unclear if Hypnotic Pattern will work at nighttime. As penned, it would be up on your DM to determine. Personally, I'd rule the Hypnotic Pattern is created of light as it's an illusion and would, as a result, be noticeable in the dead of night.And when HP is often Solid close to corners, the effect itself doesn’t penetrate complete cover.