What time of day is it impossible for a rainbow to be seen?

Question

What time of day is it impossible for a rainbow to be seen?

Answer 1

I don't believe you can see a rainbow when the sun is almost directly overhead. At least I can't recall ever seeing one at that time of the day.

Answer 2

I would say mostly in the afternoon and early evening because that is when storms are most active and rainbows seem to happen a lot during storms.

Answer 3

2 AM.