Look at this rainbow taken near St Asaphs. It has an angle of nearly 45 degrees to the horizon. Last week I blogged about one that was nearly vertical. The smaller the angle, the higher the Sun must be in the sky so the nearer we are to the middle of the day. The anti-solar point is a long way below the horizon. I hope to do some work on the angles in circles to see if I can work out the height of the Sun.
