Wondered why daughter phoned to tell me to look out of the window. There was the most beautiful rainbow I have ever seen (I'm in my eighties)-it was so big and bright you could make out all the colours. It made my day -was feeling a bit down.
If you see a double rainbow there is always a darker bit of sky between the two arcs, this is Alexander's Dark Band, (not Alexander's Ragtime Band) I learnt this from a schools' programme many years ago. Watch out for it.