New Delhi: There’s something everyone does once in a blue moon. If you take that idiom literally, Friday was the day to do what you do occasionally.
Thousands Friday cherished watching the “blue moon”, a phenomenon when a full moon appears twice in a month.
“It is a normal full moon, except for the fact that it occurs twice in a month,” says C.B. Devgan of the Science Popularisation Association Communicators and Educators (SPACE).
“It is exciting, though the moon looks the same. The fact that this is the blue moon makes it special,” says Devika, a student.
However, the blue moon is not blue in colour, unless there is volcanic ash in the atmosphere.
“In 1946, a writer for “Sky and Telescope” magazine declared a blue moon to be the second full moon in a month with two of them,” explains Devgan.
Some years even boast of two blue moons. This last happened in 1999, and it will occur again in 2018.