Seal (Hanko) Day

What Is Seal Day?

October 1st is "Seal Day" (Insho no Hi) in Japan. The date commemorates a 1873 government proclamation requiring official documents to be stamped with a registered seal. It was established by the National Federation of Seal Engraving Cooperative Associations.

The "Hanko," a Pillar of Japan's Document Culture

The hanko, or personal seal, has long served as an essential tool in Japanese business customs and official procedures, certifying the intent of an individual or organization.

• Origin: commemorates a 1873 government proclamation that formalized the use of registered seals on official documents
• Purpose: to spread awareness of the cultural and practical value of the hanko
• Changing times: with the spread of electronic contracts and digital signatures, the role of the hanko is being reconsidered

"Hanko Culture" Is Changing in a Digitalizing World

The environment surrounding hanko culture has shifted dramatically, including the elimination of seal requirements for many administrative procedures. Even so, seals still play an important role in key moments, like registered seals and bank seals, with tradition and practicality continuing to coexist.

Tips for Marking This Day

• Check on how you're managing your own seals -- registered, bank, and everyday stamps
• Look into the history and culture behind hanko seals
• Explore the craft of seal engraving (tenkoku)
• Reflect on the respective roles of electronic contracts and physical seals

A Small Stamped Impression Carries a Mark of Trust

A single seal impression carries the responsibility and trust of the person who stamps it. October 1st is a day to take another look at "hanko culture" as it continues to change with the times.