Green Thunder
It is a very curious phenomenon and quite difficult to observe, since certain atmospheric conditions are required. It occurs when the Sun rises or sets on a flat surface without obstacles, such as the sea, which must also be free of fog; at this moment, and because the last rays of the Sun are being refracted by the lower Earth's atmosphere from our position, producing the effect that its last rays are yellow and greenish in tone. The green ray is then seen for a few seconds, just before the Sun is about to rise or set, and therefore becomes an interesting target to try to photograph.
twilight rays
This phenomenon occurs with clear skies, once 15 to 20 minutes have passed after sunset (or before sunrise). These rays are produced by a cloud below the horizon that is partially blocking the Sun; In this way, the rays that manage to pass through the cloud illuminate dust particles in the air, giving the appearance of rays projected towards the sky. The phenomenon has a limited duration as the Sun finishes setting or is about to rise, depending on whether it is setting or rising.
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