A dated briefing for the operations lead who needs to know when the port shuts, why it shuts, and whether the date can still move. Every dossier declares exactly what is inside it.
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One per jurisdiction, reissued every month as governments revise dates, exchanges publish notices and ministries move deadlines. Open any cover and inspect the whole structure before you buy.
Time is unevenly distributed. A dossier’s band is set by how many observances the jurisdiction holds and how many calendars they are reckoned on — never by the country’s size, wealth or politics. The count is printed on every cover, so the band is checkable before you open it.
Regional bundles issue every dossier in a region together, every month.