Vikings converting to Islam opens up a whole can of worms. For one thing, the butterflies involved would make it so that it is very likely that Islam is not limited to Scandinavia. Perhaps the Vikings take over the eastern part of the British Isles and make it Muslim. Perhaps Greenland and maybe even Newfoundland becomes Muslim as well. As mentioned before about Zahiris, perhaps the Zahiri madhab could survive in Scandinavia. Most Madhabs nowadays tend to be restricted in geography (Hanafi madhab is practiced among Subcontinentals, Turks, Levantine Arabs, and Central Asians. Hanbali madhab is practiced among Gulf Arabs, Maliki madhab is practiced among North Africans, and the Shafi'i madhab is practiced among East Africans and SE Asians).
Another thing worth mentioning is that there will most likely be crusades to make Scandinavia Christian. If not in the 8th-11th century, then by the time the Baltics crusade had ended, and if not by then, then perhaps the early modern era. Scandinavia is going to be separated by much of the Islamic World, and unless they can unite themselves under one country and don't engage in petty squabbles then it will be tough for Scandinavian Muslims following conversion to Islam.
Such orders were formed in the 13th century, by then most of the Nords have already converted to Christianity.
Perhaps Ramadan happens at a different time, like in the spring or some other weather in which it can be suitable. Of course, this requires changing the Islamic calendar. As Scandinavia is most likely going to be the center of Zahiri Islam, perhaps the Zahiri madhab is changed to where it has a different calendar.
Another thing worth mentioning is that there will most likely be crusades to make Scandinavia Christian. If not in the 8th-11th century, then by the time the Baltics crusade had ended, and if not by then, then perhaps the early modern era. Scandinavia is going to be separated by much of the Islamic World, and unless they can unite themselves under one country and don't engage in petty squabbles then it will be tough for Scandinavian Muslims following conversion to Islam.
As long as there are whirling dervish Sufi orders of Norsemen I'm all in.
Such orders were formed in the 13th century, by then most of the Nords have already converted to Christianity.
Today Muslims living in areas with less than 6 hours from sunset till dawn during Ramadan can use the times of sunset and dawn in Mecca to determine when to break the fast and when to take the last meal before starting it once again, but that's only possible with media publishing the timetables and reliable timepieces, both unavailable during the dark ages.
Perhaps Ramadan happens at a different time, like in the spring or some other weather in which it can be suitable. Of course, this requires changing the Islamic calendar. As Scandinavia is most likely going to be the center of Zahiri Islam, perhaps the Zahiri madhab is changed to where it has a different calendar.