6 observances land on 18 March. We have not found a recorded founder for any of them.
| Observance | Declared by | First year | Source |
|---|---|---|---|
| Anniversary of the Oil Expropriation Mexico | no record | — | — |
| Flag Day Aruba | no record | — | — |
| Men's and Soldiers' Day Mongolia | no record | — | — |
| Ordnance Factories' Day India | no record | — | — |
| Sheelah's Day Ireland, Canada, Australia | no record | — | — |
| Teacher's Day Syria | 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 18 March here. The next one is Thursday, 18 March 2027.
Thursday, 18 March 2027 has no name yet. It costs $2.