A day widely marked that closes nothing — and empties a room anyway.
Some days are observed by a great many people and close no institution. Nothing shuts in London for Yom Kippur; nothing shuts in most of Europe for Diwali; nothing shuts anywhere for the Friday after Thanksgiving in an American office. Attendance still falls, sometimes sharply.
A holiday calendar cannot hold these by construction: it records days that are legally closed, and these are not. That is the gap this label exists to fill.
It is our term rather than an industry one, and it is deliberately narrow. It means a day recorded in the corpus BECAUSE it is observed without closing anything — not a guess about attendance, and not a cultural note.
Each of these is recorded because it is observed and closes nothing. A calendar of closures would hold none of them.
| 🇯🇴 | Wednesday 6 January 2027Jordan | Isra and Mi'rajMarked; not a closure. |
| 🇦🇿 | Wednesday 20 January 2027Azerbaijan | Day of MourningSolemnly observed, and a working day. |
| 🇪🇹 | Friday 19 February 2027Ethiopia | Martyrs' DayCommemorated nationally without closing the working day. |
An optional holiday is on an official list with an allowance behind it. An observed-but-open day has no such standing.
A public holiday suspends work. These days do not, which is the entire reason to record them separately.
See also optional holiday · observance · public holiday
We hold this as operational_status: open. See what we hold.