Moscow, 1 August 2015, 01:00 – REGNUM In the night from July 31 to August 1, came second in the calendar month full moon, the first was on July 2nd. This is a rare astronomical phenomenon called the “Blue Moon.” Satellite Earth that night so called not because of the color – the Moon looks usual, but because of the rarity of this natural phenomenon.
The English language has a stable idiom Once in a Blue Moon («once at the blue Moon “), it is used when talking about some very rare cases and improbable events. In such cases, the Russian language uses the expression “when the cancer on the mountain whistles” or “in Africa when the snow comes.” Note that the full moon heavenly body can actually be blue – when the Earth’s atmosphere have dust scatter the light.
Normally, between two full moons passes 29.53 days, which is slightly less than the average length of the calendar month. Thus, 2.7154, the accumulated additional full moon and you can not watch 12 full moons in a year, and 13.
Last “extra” full moon was recorded three years ago – in August 2012. Next 13th full moon rise 31 January 2018, but residents will be able to watch it all the time zones are not.
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