Sweden operates on Central European Time (CET) during winter months, which is 1 hour ahead of Coordinated Universal Time (UTC+1). During daylight saving time, observed from the last Sunday in March to the last Sunday in October, Sweden switches to Central European Summer Time (CEST), which is UTC+2.
All of Sweden follows the same timezone, from Malmö in the south to Kiruna in the Arctic north. Major cities including Stockholm, Gothenburg, Malmö, and Uppsala all observe the same time.
Sweden experiences extreme variations in daylight. In the far north, the Midnight Sun means the sun doesn't set for weeks during summer, while during winter the sun barely rises above the horizon. Stockholm, the capital, has about 18 hours of daylight in midsummer and only 6 hours in midwinter. The famous Swedish "fika" (coffee break) typically happens around 3 PM.