2 observances land on 29 February. We have not found a recorded founder for any of them.
| Observance | Declared by | First year | Source |
|---|---|---|---|
| Rare Disease Day in leap years | no record | — | — |
| Bachelor's Day Ireland and 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 29 February here. The next one is Monday, 1 March 2027.
Monday, 1 March 2027 has no name yet. It costs $2.