4 observances land on 24 September. We have not found a recorded founder for 2 of them.
| Observance | Declared by | First year | Source |
|---|---|---|---|
| National Punctuation Day United StatesWikipedia says FontFeed credits the day with reviving the interrobang, the ?! mark | Jeff Rubin | 2004 | Wikipedia |
| Heritage Day South AfricaWikipedia says it was a 1994 compromise that kept 24 September, long marked as Shaka Day, as a public holiday | the Parliament of South Africa | — | Wikipedia |
| Mahidol Day Thailand | no record | — | — |
| New Caledonia Day New Caledonia | 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 24 September here. The next one is Friday, 24 September 2027.
Friday, 24 September 2027 has no name yet. It costs $2.