Accounting · Borrowing Costs (IAS 23)

An entity is constructing a new production facility (a qualifying asset). Construction activities began on 1 February, but the specific loan to fund the project was taken out on 1 January. Technical site preparation and design work started on 15 January. The facility was physically completed on 30 November, but the regulatory safety certificate required for operations was not received until 31 December. In accordance with IAS 23 (Borrowing Costs), what is the correct period for the capitalisation of borrowing costs?