Otsukimi - Japan’s Autumn Moon

About the author: Mio is a Japanese high school student hoping to introduce Japanese traditions, seasonal events, and food culture to students around the world.

Have you ever stopped to look at the moon on a clear autumn night?

In Japan, there is a traditional custom called Otsukimi, which means “moon viewing.” It is a time to enjoy the beauty of the autumn moon. The best-known Otsukimi is Jugoya, or the “fifteenth night,” which falls on the fifteenth day of the eighth month of the traditional lunar calendar. Because it follows the lunar calendar, the date changes every year on the modern calendar and usually falls in September or October. In 2026, Jugoya, also known as the Harvest Moon viewing night, was on Friday, September 25.

Credits:

Music: "Japanese Style Calm Piano 寒月" by pianocafe_Kumi (Pixabay), used under the Pixabay Content License.

Images: Any images labeled "AI-generated illustration" were created using AI.

The Origins of Otsukimi

The custom of moon viewing is said to have spread in Japan during the Heian period, about 1,000 years ago. It developed from a moon-viewing tradition that came from China and became popular among Japanese court nobles. They enjoyed the moon while holding gatherings and composing waka poetry. Later, Otsukimi gradually spread to ordinary people and also became connected with giving thanks for the autumn harvest.

Susuki Grass and Tsukimi Dango

During Otsukimi, people traditionally decorate with susuki, or Japanese pampas grass. Because susuki looks a little like rice plants, it has long been connected with prayers for and gratitude for a good harvest. Another tradition is to offer tsukimi dango, small white rice dumplings. Their round shape is said to represent the full moon.