5 observances land on 23 June. We have not found a recorded founder for any of them.
| Observance | Declared by | First year | Source |
|---|---|---|---|
| Father's Day Nicaragua, Poland | no record | — | — |
| Grand Duke's Official Birthday Luxembourg | no record | — | — |
| International Women in Engineering Day | no record | — | — |
| International Widows Day international | no record | — | — |
| United Nations Public Service Day International | 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 23 June here. The next one is Wednesday, 23 June 2027.
Wednesday, 23 June 2027 has no name yet. It costs $2.