This calendar lists 13 full-day closures and 2 published half days across the exchanges whose 2028 calendars have been verified against their own official pages.

On a published half day the market opens as usual but shuts hours early — 1:00 PM Eastern in the United States, for example. It is the closure people get caught by, because the market is genuinely open that morning, so half days are listed here alongside the full closures rather than hidden in a footnote.

A date appears here only once it has been checked against the exchange's own published calendar. All tracked exchanges have been checked. We would rather show a gap than a guess.