All 26 cantons, with no municipal exception in the existing official overview.
Only Swiss National Day on 1 August has federal constitutional holiday status. Christmas Day applies nationwide through cantonal holiday rules.
Friday already creates a long weekend. For Saturday, 26 December, the canton and any municipal caveats need a separate check.
25 December is the clear shared anchor of Swiss Christmas planning. The distinction from 26 December is decisive: Christmas Day applies in every canton, while St Stephen's Day follows its own cantonal or local rule.
