Lighthouse Day

What Is Lighthouse Day?

Every November 1st is "Lighthouse Day" (灯台記念日, Tōdai Kinenbi) in Japan. It marks the start of construction on the Kannonsaki Lighthouse (観音埼灯台) in Yokosuka, Kanagawa Prefecture, on November 1, 1868 — Japan's first Western-style lighthouse. Its completion opened the way for lighthouse construction across the country and greatly improved the safety of maritime traffic. Lighthouse Day was established in 1949 by the Japan Coast Guard as a day to look back on the history and role of the lighthouses that keep navigation safe.

What Do Lighthouses Do?

Lighthouses are important navigational aids that shine light at night or in poor visibility, such as fog, so that ships can tell where they are and where the coastline lies. Each lighthouse has its own light color and flashing pattern, and by comparing these with nautical charts, navigators can determine their ship's position. Electronic navigation such as GPS is now widespread, but lighthouses are still regarded as an important backup in case of power failures or equipment trouble.

Notable Lighthouses in Japan

Kannonsaki Lighthouse (Kanagawa)

Kannonsaki Lighthouse was Japan's first Western-style lighthouse: construction began on November 1, 1868, and it was first lit in 1869. The original was designed by French engineers including Léonce Verny. The first tower was badly cracked by an earthquake in 1922 and torn down, and the rebuilt second tower collapsed in the Great Kantō Earthquake of 1923, so the present lighthouse is the third, rebuilt in 1925. Its white octagonal tower overlooks the Uraga Channel at the entrance to Tokyo Bay.

Inubōsaki Lighthouse (Chiba)

Inubōsaki Lighthouse stands on a cape in Chōshi, Chiba Prefecture, and was first lit in 1874 as an important navigational aid on the Pacific side. It was designated a national Important Cultural Property (structure) in 2020, and it is a popular tourist spot where visitors can go inside. Located at the eastern tip of the Kantō Plain, it is also a well-known place to watch the first sunrise of the year.

Izumo Hinomisaki Lighthouse (Shimane)

Izumo Hinomisaki Lighthouse in Izumo, Shimane Prefecture, was first lit in 1903. At 43.65 meters, its tower is the tallest of any stone lighthouse in Japan. Designed and built by Japanese engineers using locally quarried tuffaceous sandstone, the white tower was designated a national Important Cultural Property in 2022, and its views over the Sea of Japan make it a popular sightseeing spot.

Things to Do on Lighthouse Day

On Lighthouse Day, you can visit Kannonsaki and other lighthouses to learn about their history and role. The Japan Coast Guard and local governments sometimes hold exhibitions and events about lighthouses, and some areas offer special openings or light-ups, so check official information before you go.

Why Learn About Lighthouses Today?

Even with advanced navigation systems, lighthouses remain important as analog safety devices that keep working during power outages or equipment failures. Learning their history is also a way to learn about Japan's modernization and the development of shipping and international sea routes.

Summary

Lighthouse Day on November 1st commemorates the start of construction on Kannonsaki Lighthouse, Japan's first Western-style lighthouse. Lighthouses continue to watch over Japan's seas as vital infrastructure for maritime safety, and this day is a chance to appreciate their value in history, technology, and tourism.