Kiwi Day (Kiui no Hi)

What Is Kiwi Day?

September 1st is "Kiwi Day." Based on the wordplay "Kyū (9) + I (1)" — reading 9 as "kyū" and 1 as "i" to sound like "kiwi" — this anniversary was established by Zespri International Japan, which imports and markets New Zealand kiwifruit, and is registered with the Japan Anniversary Association. The goal is to boost kiwifruit consumption and help people stay energetic by eating it.

Why Is September 1st "Kiwi Day"?

The date is pure wordplay: 9 is read the English way as "kyū," and 1 as "i." The same company has also established "Gold Day" on May 14 for giving gold kiwifruit, and "Green Day" on September 14 for returning the favor with green kiwifruit.

• Wordplay: Kyū (9) + I (1) = "Kiwi."
• Established by: Zespri International Japan.
• Purpose: To boost kiwifruit consumption.

About Kiwifruit

Kiwifruit is often associated with New Zealand, but it actually originates from southern China. Today it's also widely grown in Japan, where both green-fleshed and gold-fleshed varieties are enjoyed.

• Origin: Its roots trace back to a wild vine native to China.
• Development in New Zealand: After breeding work, commercial cultivation began around the 1930s, and the fruit spread worldwide.
• Cultivation in Japan: Major production areas include Ehime, Fukuoka, and Wakayama.

Nutrition and Health Benefits of Kiwifruit

Kiwifruit contains a wide range of nutrients.

• Vitamin C: Rich in vitamin C among fruits, especially gold-fleshed varieties.
• Dietary fiber: Helps support healthy digestion.
• Potassium: A mineral involved in flushing excess sodium from the body.
• Actinidin: A protein-digesting enzyme that aids digestion of meat dishes.

Interesting Facts About Kiwi Day

• Origin of the name: Named "kiwifruit" in 1959 for export to the United States, after the kiwi bird, a national symbol of New Zealand — reportedly not because of any resemblance.
• Green vs. gold: Green-fleshed varieties are tangier, while gold-fleshed varieties are sweeter.
• Needs ripening: Kiwifruit ripens further after harvest, becoming sweeter over time.
• Skin is edible: Once the fuzz is removed, the skin can be eaten too, adding extra nutrients.

Tips for Enjoying Kiwi Day

• Add kiwifruit to breakfast for a vitamin boost.
• Try comparing different varieties—green, gold, and red.
• Mix it into yogurt or salads for an easy, healthy recipe.
• Look into where and how kiwifruit is grown to learn more about its background.

A Small Fruit Packed With Nutrients That Support Everyday Energy

"Kiwi Day" on September 1st is a day to rediscover the appeal of this healthy, delicious fruit. Enjoy its refreshing balance of tartness and sweetness as you welcome the change of seasons with energy.