24 December remains a working day in 2026. Time off, an earlier finish and actual opening hours come from the employment, collective or workplace rule and the rule or published time that applies at the location.
Thursday 24 December 2026 remains a working day. Any special business hours must come from the applicable rule or published provider time; one leave day connects it to Friday and the weekend.
Christmas Eve is culturally central, but it does not become a statutory holiday through early closing, a company custom or a church service.
In 2026 the date is Thursday, so the useful question is whether the applicable rule creates an early finish or whether leave is needed for the whole day.
The first Christmas Day on Friday has a separate statutory status and should not be used to infer the working-time rule for 24 December.