Why a day is closed
Each one-sided closure is listed with the holiday name.
What it does: Lists each one-sided closure with the holiday or weekend reason.
What it does not: Does not invent local or company holidays. Confirm gazette dates for contracts.
Limits: Same 2026–2027 tables as Overlap. Weekend checkboxes are yours to set.
both open only first closed only second closed both closed
Why a day dropped out
3 April 2026 is Good Friday in England and Wales and an ordinary Friday on the US federal calendar.