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- Early closes. An early close’s
close_time is when normal trading ends, in the calendar’s local time, as
24-hour HH:MM. It isn’t the end of a closing auction: SGX is 12:00, NZX 12:45, NYSE 13:00.
- Weekend working days. Some countries move a working day onto a weekend (China and South Korea around long
holidays, for example). Those days are recorded as
weekend_workday and count as business days.
- Observed days. When a holiday falls on a weekend and is moved, the moved day is marked
observed: true. Whether
a calendar observes it follows the official rule: the Federal Reserve stays open on the Friday before a Saturday
holiday, so USD doesn’t close then while the NYSE does.
- Weekends. Each calendar has its own weekend, with dates: the UAE moved from Friday-Saturday to Saturday-Sunday
in 2022, and the calendar records both.
- Statutory holidays only. Country calendars hold public holidays set by law, not one-off closures such as an
executive order giving federal employees a day off.