I agree with the dosing a little before dusk, so that come-up == the fall of night. There's just a very special, "Entering Into The Spirit Realm" feeling to that part of the day, IMO. Then go look the night sky.
Though tripping during broad daylight can also be awesome for a change. I totally agree about how the sun feels amazingly energizing, almost like it is alive and speaking to you somehow. Close your eyes, look up towards it and let it strike your forehead, location of the pineal gland, i.e., the "third eye" so to speak, and it can feel almost like you are receiving Angelic telepathic transmissions via the sunbeams landing there, haha!