100th anniversary: The Tokyo Grand Sumo Association became the All Japan Sumo Association at the...
History · Anniversaries · Sun, December 28, 2025
1925: The Tokyo Grand Sumo Association became the All Japan Sumo Association at the instigation of Prince-Regent Hirohito, laying the foundations for the world's sole professional sumo association.
Source, method and history
- Source
- Wikipedia
- How we know
- Wikipedia "On this day" selected anniversary, 100 years (1925 to 2025).
- Recurs
- annual
- Feed
- Subscribe to Anniversaries
- Changes
- None recorded.
Sources: official schedules and published calendars, linked on every event; computed dates name their rule. Refreshed nightly.