When is Battle of the Boyne 2026 and why is it observed on a different day?
In 2026, the Battle of the Boyne holiday falls on Sunday 12 July in Northern Ireland. The official public holiday, however, is observed on Monday 13 July 2026, giving many people a long weekend while keeping the main commemorations tied to "The Twelfth" itself.
This split between the calendar date and the observed holiday matters for planning work, schooling and travel. Parades and community events are typically centred on Sunday 12 July, while the Monday bank holiday mainly affects opening hours, public services and commuting patterns across Northern Ireland.
The Battle of the Boyne date marks the 1690 clash between the forces of King William III and King James II, but it is remembered on 12 July rather than the original Old Style date. In modern practice, when 12 July falls on a weekend, the United Kingdom schedules the Northern Ireland public holiday for the following weekday so workers do not miss a statutory day off.
For people in other parts of the United Kingdom, such as England, Scotland and Wales, 12 and 13 July 2026 are expected to be normal working days. Only Northern Ireland treats Battle of the Boyne 2026 as a public holiday, so national businesses with staff across regions may operate different timetables.