For Norwegian tax emigration, your stay in Norway must not exceed 61 days during the income year. Every commenced day in Norway counts as a day of stay. This is only one condition for tax emigration: you must also have taken up permanent residence abroad and neither you nor your close relatives may have residential property available in Norway, subject to applicable exceptions. If you lived in Norway for 10 years or more before moving abroad, these conditions generally must be met during each of the three income years after the year you moved abroad. This tracker monitors days only and does not by itself determine your tax residence status.
https://www.skatteetaten.no/en/person/taxes/get-the-taxes-right/abroad/tax-emigration/