Logistics and supply chain

Where it costs money

The state stops before the economy does. 148 closures in the corpus are public sector only — the office next door is working, and the customs desk, the permit counter and the inspection service are not. Nothing clears.

The cluster, not the day. One closure is an inconvenience. Five in a row is demurrage. Vietnam, Taiwan, Turkey, Jordan, Mongolia and Uruguay each run five clustered closures in 2027 — Tết, Lunar New Year, Eid — and a spreadsheet of single dates makes all of them look like ordinary days off.

The corridor needs every link. A truck crossing three borders needs all three open, plus both customs authorities. The intersection of four calendars is not a calendar anyone keeps by hand.

The week is not the week. Friday is a rest day across the Gulf and Sunday is a working day. A planner assuming Monday–Friday books collection on the one day the port is closed and treats the open one as a weekend.

The clusters, from the corpus

2027 · five clustered national closures each
VN from 5 Feb TW from 4 Feb TR from 16 May
JO from 16 May MN from 11 Jul UY from 22 Mar

Computed from the rules, not a list somebody typed — so 2028 and 2029 are already answerable, and a decree that moves one is an edition rather than a surprise.

What we hold that answers it

You need	We hold
Whether the state is working	`closed_public_sector` as its own status — separable from the days everything shuts
Multi-day shutdowns, ahead of time	Closures as rules, so consecutive runs are computed years out rather than noticed in the week
A clear window across a whole corridor	The Operating Calendar takes every jurisdiction on the route at once and finds the runs where all of them are open — and names what broke the ones that failed
The real working week per country	Rest days where evidenced, never assumed Monday–Friday
Regional variation at the border	653 subdivisions, of which 510 keep a date their country does not — the crossing is in a province, not a country
Something an insurer or a client will accept	Every row names its authority, when it was checked, and how well it is evidenced

The thing people open it for

Put the whole corridor on the board and ask for a clear run.

Try a four-country corridor

Free for two jurisdictions with no account.

What we do not hold

Port operating hours, berth windows or terminal calendars. We hold when the jurisdiction stops, not when a specific terminal gates in. A port working a public holiday at overtime rates is a commercial arrangement, not a closure.
Vessel and carrier schedules. Not our data and never will be.
Customs procedure — tariff codes, documentation, clearance times. We tell you the desk is shut, not what to file at it.
Bank settlement calendars — TARGET2, CHAPS, Fedwire. If your question is when a letter of credit settles rather than when the border is open, that gap is real and it is ours.

How it reaches your stack

If you	Take
Plan lanes and cut-offs by hand	the Operating Calendar — a seat, no code
Feed a TMS or an ETA model	the Calendar API — scope by territory, so cost tracks the lanes you run
Brief a client, an insurer or a tender	a Dossier — one country, sourced, edition on the cover