Opening hours Public holidays regional office Basel-Oberwil Public holidays regional office Basel-Oberwil Public holiday Date Opening hours On-call service for emergencies Carnival 27.02.2023 closed no On-call service Carnival 01.03.2023 closed no On-call service Maundy Thursday 06.04.2023 closed from 12:00 am no On-call service Good Friday 07.04.2023 closed no On-call service Easter Monday 10.04.2023 closed no On-call service Labour Day 01.05.2023 closed no On-call service Ascension 18.05.2023 closed no On-call service Friday after Ascension 19.05.2023 closed no On-call service Whit Monday 29.05.2023 closed no On-call service Swiss National Day 01.08.2023 closed no On-call service Company holidays 25.12.2023 - 02.01.2024 closed 058 715 60 00 Outside of our opening and on-call service hours, please contact your property caretaker.