See: Barrow Alaska Winter
This presents an issue for Sabbath-keeping organizations around the world. Like the Seventh Day Adventists, some COG ministers say that people who live in these regions should keep the sabbath at "Jerusalem time", proving once again how they pick and choose how to interpret scriptures. Scriptures meant for specific people for a specific time and region.
A person in a Facebook group of ex-SDA had another version on how to keep sabbath:
We have the same situation in northern Norway. The way it is handled by adventists is to keep sabbath from noon Friday until noon Saturday during wintertime without sunrises, and from midnight Friday night until midnight Saturday night in the summertime without sunsets. Serious sabbathkeepers will leave work before noon on Fridays those weeks during the winter, a real challenge as far as work is concerned.