The phrase 'Showa 100th Year, October 10th' trends on SNS, sparking nostalgia and generational conversation

Today, October 10, 2025, the phrase 'Showa 100th Year, October 10th' garnered significant attention on social media and trended. Many users reacted to this catchy date, sharing it as a special day.

On X (formerly Twitter), posts like 'Today is Showa 100th Year, October 10th' flooded timelines, with users expressing sentiments such as 'Knowing this gives a mysterious sense of specialness and nostalgia' and 'My heart is dancing.' There were also many eagerly anticipating the precise moment of 'Showa 100th Year, October 10th, 10:10,' marking it as a visually auspicious 'all-same-numbers' time.

This unique date also sparked intergenerational conversations. Users born in the Showa era humorously reflected on their age and era, with comments like 'Hearing this makes me feel really old' and 'To someone born in the Reiwa era, I must seem like someone from ancient times, like a grandmother.' Some even posted *tanka* (a form of Japanese poetry) such as, 'Passing by, a grade-schooler asks, 'Are people born in Showa still alive?' alongside the hashtag #Let'sCreateTankaOnTheThemeOfShowa, expressing the differences in generational awareness.

On the other hand, some pointed out that, strictly speaking, 'Showa 100th Year' would only truly be reached on December 25, 2026, marking 100 full years since the first year of Showa (December 25, 1926). However, many users simply enjoyed the rhythmic sound of '100th year, 10th month, 10th day' itself, finding joy in sharing that ephemeral sense of unity.

On this day, people once again reflected on the Showa era, experiencing a day where past and present, and different generations, intersected through the digital space. This simple play on numbers became an event that evoked nostalgia and added a touch of color to everyday life.

The context

The article discusses a social media trend in Japan related to the "Showa era." Japan uses a unique imperial calendar system called *Gengo* (元号), where years are numbered based on the reign of the current emperor.

The Showa era (昭和時代) refers to the period from December 25, 1926, to January 7, 1989, corresponding to the reign of Emperor Hirohito (posthumously known as Emperor Shōwa). It was the longest imperial era in Japanese history, lasting 62 years and 13 days. It is often associated with significant historical events such as World War II and Japan's rapid post-war economic growth.

The phrase "Showa 100th Year, October 10th" (昭和100年10月10日) that trended on social media on October 10, 2025, is a playful numerical coincidence rather than an official calendar event. While "Showa 100th Year" would technically mark 100 full years since Showa 1 (December 25, 1926), which would be December 25, 2026, the buzz on social media stemmed from the appealing sequence of "100" followed by "10/10," which creates a catchy and memorable rhythm in Japanese (Hyaku-nen Juu-gatsu Tooka, meaning "100 years, 10th month, 10th day"). This, combined with the nostalgia for the Showa era, fueled the trend.

Tanka (短歌) mentioned in the article is a traditional Japanese poetic form consisting of 31 syllables arranged in a 5-7-5-7-7 pattern.

"X" is the social media platform formerly known as Twitter.