We know well that what is new moon and full moon. There is also a peculiar term ‘blue moon’
quoted frequently. What is that?
A "blue moon" is also used,
colloquially, to mean "a rare event", reflected in the phrase
"once in a blue moon". So ‘blue moon’ must be a rare occurrence!!
In reality, a blue moon is not that rare but
happens once in every three years. The
time between two full Moons doesn't quite equal a whole month (from new Moon to
new Moon is 29.5 days),the remaining days are accumulated over a period of
three years and thus approximately every three years there will be two full
Moons in one calendar month.
The next time two full Moons that occur in the
same month will be in August 2012.So folks be prepared to welcome the blue moon in august this year.
