rare 2nd Jusan-ya moon
Taken by Shiraishi on November 5, 2014 @
Kumagaya-shi, Saitama, Japan
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Camera Used: NIKON COOLPIX P510
Exposure Time: 10/6400
Aperture: f/5.9
ISO: 800
Date Taken: 2014:11:05 22:40:24
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Details:
Tonight it is a rare 2nd Jusan-ya Moon, in Japan.
In the old Japan, they admired the Moon on the 13th night in the 9th month, in the lunisolar calendar, as Jusan-ya in Japanese (13th-night)
This year 2014, the primary Jusan-ya is October 6th, which is the 13th day in the 9th month in the East-Asian lunisolar calendar.
However, this year has an intercalation month in the lunisolar calendar, which is placed after the original 9th month.
Today November 5th is the 13th day in the intercalated 9th month.
And an intercalated 9th month is very rare.
It is placed for the first time in 171 years, since 1843.
So, the second Jusan-ya can be seen for the first time in 171 years in Japan, also.
The Earth goes around the Sun faster near the aphelion, which is about January 4th and is generally in the lunisolar 11th month. So, roughly speaking, intercalated 9th, 10th, 11th, 12th and 1st months are rare.
On the other hand, the Earth goes slower near the perihelion, which is about July 5th and is generally in the lunisolar 5th month. So, roughly speaking, intercalated 3rd, 4th, 5th, 6th and 7th months are common. In particular, an intercalated 5th month is very often.
Nikon COOLPIX P510 digital camera (no telescope); ISO 800, F5.9, 1/640s exposure, f=1000mm
Photographer's website:
No URL provided.
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