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Hiroshima Memorial Day 2025 in Japan

Dates of Hiroshima Memorial Day in Japan

2026Aug 6
2025Aug 6
2024Aug 6

Related Holiday in Japan

Japan Holiday Calendars

Hiroshima Memorial Day, observed on August 6, honors the victims of the atomic bombing in 1945 and promotes a message of peace and nuclear disarmament. A memorial ceremony is held at Peace Memorial Park, where people offer prayers and remember the lives lost.

Hiroshima Memorial Day: A Public Holiday?

Hiroshima Memorial Day is not a national public holiday in Japan; schools and businesses remain open, but solemn memorial events are held in Hiroshima to honor the victims and advocate for peace.

A solemn stone arch at Hiroshima Peace Memorial Park is adorned with flowers, framing the Atomic Bomb Dome in the distance beneath a clear blue sky.
The Cenotaph in Hiroshima Peace Memorial Park stands in solemn tribute to the victims of the atomic bombing, symbolizing Japan's enduring call for peace. (Image credit: iStock)

Hiroshima Memorial Day

Hiroshima Memorial Day is observed every year on August 6 to remember the victims of the atomic bombing of Hiroshima in 1945. On that day, during the final stages of World War II, the United States dropped the world's first atomic bomb used in warfare on the city. The explosion caused massive destruction, killing over 100,000 people instantly or within months due to burns, injuries, and radiation exposure.

The city of Hiroshima began holding official memorial services in 1947. These events have continued annually to mourn the lives lost and to promote the message of peace. In 1954, Hiroshima Peace Memorial Park was established at the site of the explosion. The date became a day not only of remembrance but also of commitment to nuclear disarmament. Though it is not a public holiday, Hiroshima Memorial Day is an important occasion in Japan, reminding the nation and the world of the horrors of nuclear war and the value of lasting peace.

Observance of Hiroshima Memorial Day in Japan

Hiroshima Memorial Day is observed with solemn and respectful ceremonies, especially in Hiroshima City. The main event takes place at Hiroshima Peace Memorial Park, where thousands of people gather to remember those who lost their lives in the atomic bombing. The ceremony begins early in the morning and includes the offering of flowers, silent prayers, speeches by survivors, and a moment of silence at 8:15 a.m.—the exact time the bomb was dropped. The Prime Minister and other dignitaries often attend, along with international guests.

Throughout the city, peace-related events take place, including exhibitions, concerts, and lantern-floating ceremonies. At night, paper lanterns are released on the Motoyasu River to honor the memory of the dead and send hopes for peace. Educational programs in schools and media coverage across the country help people, especially the younger generation, understand the tragedy and importance of peace. The Atomic Bomb Dome, a preserved ruin near the blast site, stands as a powerful symbol of what occurred and why it must never happen again.

The importance of Hiroshima Memorial Day lies in its message of reflection, education, and hope. It is a day for people to remember the deep pain caused by war and to renew their commitment to a peaceful future. Although it is not a public holiday, it holds deep emotional significance for many Japanese people. The day encourages dialogue, global understanding, and the effort to build a world without nuclear weapons. It reminds us that peace is not guaranteed—it must be preserved, honored, and taught to every new generation.

Hiroshima Memorial Day Observances

YearDateWeekdayNameHoliday Type
2024Aug 6TueHiroshima Memorial DayObservance
2025Aug 6WedHiroshima Memorial DayObservance
2026Aug 6ThuHiroshima Memorial DayObservance
2027Aug 6FriHiroshima Memorial DayObservance
2028Aug 6SunHiroshima Memorial DayObservance