5 observances land on 9 September. We have not found a recorded founder for any of them.
| Observance | Declared by | First year | Source |
|---|---|---|---|
| Armored Forces Day Ukraine | no record | — | — |
| California Admission Day California, United States | no record | — | — |
| Children's Day Costa Rica | no record | — | — |
| Chrysanthemum Day or Kiku no Sekku Japan | no record | — | — |
| Emergency Services Day United Kingdom | no record | — | — |
"No record" means we could not find one, not that none exists. Where a founder is named, the source is named with it.
Who decides these? Nobody official. A brand, a trade body, a government, or one person with a website. Most are simply asserted and then repeated until they look official. Here, whoever names it first.
Nobody has ever named 9 September here. The next one is Thursday, 9 September 2027.
Thursday, 9 September 2027 has no name yet. It costs $2.