Copenhagen is 1 hour ahead of Reykjavik during standard time. Reykjavik uses Greenwich Mean Time (GMT, UTC+0) year-round while Copenhagen uses Central European Time (CET, UTC+1). When it's 12:00 PM in Reykjavik, it's 1:00 PM in Copenhagen.
Iceland does not observe daylight saving time. During Copenhagen's summer time (CEST), the difference increases to 2 hours as Copenhagen moves to UTC+2 while Reykjavik stays at UTC+0.
Best calling time: 8:00 AM - 4:00 PM Reykjavik time. This corresponds to 9:00 AM - 5:00 PM in Copenhagen (or 10:00 AM - 6:00 PM during CEST), covering Danish business hours.
Iceland was historically connected to Denmark, gaining independence in 1944. Copenhagen remains culturally and economically important to Iceland, with strong flight connections between the Nordic capitals. The flight takes about 3 hours.