What is the Double Yang Festival?

The origin of the Double Yang Festival held on September 9th, can be traced back to China in the same way as other seasonal festivals.
In China, odd-numbered days are considered auspicious yang and double odd-numbered dates such as March 3rd and July 7th are regarded as being especially fortunate.
Among them, September 9th, which has double nines, the largest yang number, is called Choyo (literally edouble yangf) and has been introduced as the Double Yang Festival to Japan.
In China, the chrysanthemum has been known as a highly medicinal plant throughout the ages and in a book written in the fourth century, you can find the Chrysanthemum Water Legend which tells the tale of villagers who drank water descending from a valley where chrysanthemums grew in clusters, and as a result, lived a long life.
Drinking water with chrysanthemum extract brings good health and longevityc The medicinal effect of the flower and legend of the Double Yang Festival crossed the sea, were introduced to Japanese aristocracy in the Heian Era (circa 794-1192), and have taken root in the form of a seasonal event.

In the Edo Period (1603-1868), major seasonal festivals were established as the e5 Seasonal Festivalsf and Choyo (the Double Yang Festival) was declared to be one of these, along with Jinjitsu, Joshi (Doll Festival), Tango and Tanabata. Soon, the Double Yang Festival became popular among the general populace and they enjoyed the event of praying for good health and longevity by drinking chrysanthemum sake, covering the medicinal plant with cotton and vying in beauty of flowers in a show called eKiku Awasef, (or eChrysanthemum Exhibitionf, as we know it today). Moreover, at that time, a custom called the eNochi-no-Hinaf Festival developed among the people of Edo.
In this festival, hina dolls shown on March 3rd were put out on display again to air and the people prayed for longevity. In the world of haiku, Japanese seventeen-syllable poems, nochi-no-hina has become a season term for September and been passed down as a tasteful practice. Also, there are synonyms such as hassaku ningyo (autumn dolls) and okazura ningyo (vine dolls) and some literature mentions that Edo people had a custom to display Boysf Festival dolls during the festival as well.

5 Festivals Painting the 4 Seasons of Japan

In Japan, seasonal festivals are a way of life.

January 7, Mutsuki

Jinjitsu (Seven Herbs Festival)

We eat rice porridge made with seven herbs and pray for good health for the year.
March 3, Yayoi

Joshi (Peach Blossom Festival)

We display hina dolls, eat Chirashi or escatteredf sushi and clam soup, and pray for the healthy growth of our girls.
May 5, Satsuki

Tango (Iris Festival)

We display festival dolls and carp streamers, eat rice cakes wrapped in bamboo and oak leaves, take a bath with roots and leaves of the irises, and pray for the healthy growth and social success of our boys.
July 7, Fumitsuki

Tanabata (Bamboo Festival)

We write wishes on small pieces of paper, hang them on branches of bamboo, and pray that they will come true.
September 9, Nagatsuki

Choyo (Double Yang Festival)

We use chrysanthemum sake and cotton covers and pray for good health from the medicinal effect of the flower.
Also, we display hina dolls as 'nochi-no-hina' dolls.