The **Midnight Sun** (24-hour daylight) occurs **north of the Arctic Circle (66.5°N)** in summer and **south of the Antarctic Circle (66.5°S)** in winter. Countries with territory in these zones:
| Country | Regions/Territories | Key Locations |
|---|---|---|
| **Norway** | Nordland, Troms, Finnmark; Svalbard, Jan Mayen | North Cape, Tromsø, Longyearbyen (Svalbard: Apr 20–Aug 23) |
| **Sweden** | Norrbotten (Lapland) | Kiruna, Abisko (late May–mid Jul) |
| **Finland** | Lapland | Rovaniemi, Nuorgam (June–Jul) |
| **Russia** | Murmansk, Arkhangelsk, Nenets, Yamal, Krasnoyarsk, Sakha, Chukotka | Murmansk, Norilsk, Tiksi (varies by latitude) |
| **USA (Alaska) | North of Arctic Circle | Utqiaġvik (Barrow): May 10–Aug 2; Fairbanks: ~21 hrs (not full) |
| **Canada | Yukon, NWT, Nunavut | Inuvik, Iqaluit, Resolute (weeks to months) |
| **Denmark (Greenland) | North of Circle | Qaanaaq, Ilulissat (May–Aug) |
| **Iceland** | Grímsey Island only (mainland just below) | Grímsey: June solstice only |