Post Office – Orkney, Dounby – Opening Hours & Branch Details Post Office is directly on Dounby, a 11.38 mile driving distance north-west from the centre of Orkney (close to Dounby Community School). The branch is a convenient addition to the districts of Skeabrae, Dounby, Twatt, Finstown, Corston, Mirbister and Quoys of The Hill. Open hours for today (Friday) are from 9:00 am to 5:30 pm. Please see this page for other information regarding Post Office Orkney, Dounby, including the hours of business, navigation or customer feedback.