When is the optical phenomenon called a "green flash" or "green ray" visible?

More Questions:

Which grandmaster did Bobby Fischer defeat in 1972 and became the first American to win the world chess title?

Depending on the story, which two fruits are often considered the Queen of Fruits?

According to legend, where did the Norse gods live?

What is the second largest state in the US?

The zero of which two temperature scales is known as "Absolute Zero"?

What are the zombies, or walkers, on the TV show "Fear the Walking Dead" called during season 1?

Who presented the radio programme "In the Psychiatrist's Chair"?

What was Marky Mark's backing band?

Which song from the "White Album" was originally titled "Maharishi"?

Which British Sailor and Explorer was killed by Hawaiian natives in 1779?

What Labrador retriever supplanted Socks the cat as the Clintons" favorite pet in 1997?

What is the FBI motto?

Florence Nightingale tended the soldiers in which war?

A 1 to 3 mph wind on the Beaufort scale is called what?

"Stay" was a hit single for which UK band in 1992?