今日は 旧重陽で 毎年必ず大安

　令和５年まであと８８日。最近は秋晴れの日が続き、早朝３～４時に南南東の空から頭上を仰ぐと、日本列島の上空に早くも「冬のダイアモンド」が見られます。私が初めてこれを目で捉えた時の感動は今でも忘れられません。それはあまりにも巨大だからです。

　　おそらく地球誕生以前から宇宙に形成され、石器時代の私たちの遠い先祖は今より澄んだ空、暗黒の夜空にこの壮麗な姿を見たことでしょう。現代人の私たちも、それと同じものが見られます。

　「冬のダイアモンド」はすべて１等星です。有名な「オリオン座」はその一部にあり、シリウスなどで形成される「冬の大三角」もその一部です。

　最も北のカペラの位置はちょうど北海道・稚内市の上空を通過します。「冬のダイアモンド」は、今後、次第に深夜に見られ、続いて夜の９時頃に見られれば、お正月です。

　ところで、今日は旧暦の重陽です。五節句【１月１日、３月３日、５月５日、７月７日、９月９日で、いずれも奇数が重なる日】の一つで旧暦の９月9日です。この日は「毎年必ず大安」です。おそらく中国で始まり、その後日本に入り、長寿を願い、災難・邪気を払う風習と考えられます。

Dear my friends who are earthling

　There are 88 days until Reiwa 5th year. Recently the weather of autumn have been clear, and when we look up at the south-southeast sky at 3:00 or 4:00 in the early morning, we are able to confirm the "Winter Diamond" overhead in the Japanese archipelago. I still can't forget the excitement when I first saw this group with my own eyes because of too big beyond expectation.

　It was probably formed in the universe before the birth of the earth, and our distant ancestors in the Stone Age must have seen this magnificent figure in the clearer, darker sky at night. We in modern people can see the same things.

　"Winter Diamond" are consisted 1st magnitude stars only. The famous "Orion" is a part of it, and the bright "Winter Triangle" including Sirius is also a part of it.

　The position of the northernmost Capella just passes over Wakkanai City, Hokkaido in Japan. From now on, "Winter Diamond" will gradually be seen at midnight, and if it is seen around 9 o'clock at night, it will be New Year's Day in 2023.

　Not change the subject, but today is Choyo in the lunar calendar." Today is one of the five seasonal festivals such as [January 1st, March 3rd, May 5th, July 7th, and September 9th, all of which are odd numbers]

　Therefore, today is September 9th in the lunar calendar. This day is "always a taian that means the luckiest day surely every year". It is believed that this custom originated in China and then entered Japan, wishing for longevity and warding off misfortunes and evil spirits.

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