Iceland is on GMT year-round: UTC+0, no seasonal adjustment, no daylight saving time. This has been the case since 1968, when Iceland abolished daylight saving time entirely and has not looked back.

This is remarkable.

Iceland sits at 64-66 degrees north latitude, making it one of the most northerly inhabited countries in the world, right at the Arctic Circle. In June, the sun in Reykjavik does not properly set: the sky goes through a twilight at around 1 AM and the sun is back up before 3 AM. In December, the sun rises at about 11:15 AM and sets at 3:30 PM.

If any country had reason to adjust its clocks to capture more usable daylight, you would think it would be a country with such extreme seasonal variation. Iceland concluded the opposite: given the extremity of the seasons, clock changes are pointless. In summer, there is so much light that an extra hour in either direction is irrelevant. In winter, there is so little that no clock adjustment can fix it.

The logic of permanent GMT

Iceland’s permanent UTC+0 is geographically interesting. Reykjavik sits at about 22 degrees west longitude, which would naturally put it at roughly UTC-1:28 by solar reckoning. UTC+0 makes Reykjavik run nearly 90 minutes fast relative to the sun. Solar noon in Reykjavik falls around 1:30 PM rather than 12:00 noon.

Why UTC+0? Partially history (Iceland coordinated with the UK for much of the 20th century), partially commerce (significant trade and transit connections with Europe), and partially the practical recognition that in a country of extreme seasonal variation, being a bit out of sync with the sun is the least of your timekeeping challenges.

The midnight sun and the culture it creates

Icelandic summer culture is defined by the midnight sun. Visitors are disoriented; locals are exuberant. Summer festivals run at midnight. Outdoor concerts, hikes, and social events fill hours that in other countries would be used for sleep. The concept of a “sensible bedtime” loosens considerably when the sky never darkens.

The Icelandic summer of music and outdoor culture is so intense partly because everyone knows winter is coming. The long dark is the counterpart to the long light, and the exuberance of June is in part the society drawing energy from the sun while it is available.

The long dark: the Icelandic response

In December and January, Iceland has about four to five hours of useful daylight. The darkness is not depressing to most Icelanders in the way outsiders might expect. Icelandic culture has developed an aesthetic of winter that is its own thing: wool sweaters, candlelight, hot pools, family time. The Icelandic word myrkur means darkness, but it is not a frightening word.

Iceland has one of the world’s highest per-capita book publication rates. The long winter nights have something to do with this. When it is dark at 4 PM, you have options: you can be miserable about it or you can read.

No neighbors on the same clock

Iceland is unusual in having no land neighbors at all (it is an island) and being in a different timezone from all its nearest cultural neighbors. Denmark is UTC+1 (winter) and UTC+2 (summer). The UK is UTC+0 (winter) and UTC+1 (summer). Norway and Sweden are UTC+1 and UTC+2.

This means Iceland is the same clock as the UK in winter (useful: Reykjavik-London is a major air route) but one hour behind in summer. A flight from Reykjavik to London arrives an hour later than departure by clock, even on a 2.5-hour flight: you leave at 9 AM Reykjavik time (UTC+0) and arrive at 11:30 AM London time (UTC+1).

The Althing and the oldest parliament

Iceland’s Althing, established in 930 CE at Þingvellir, is considered one of the world’s oldest parliaments. The assembly met annually and provided a structure for resolving disputes, creating law, and setting collective direction for the island’s settlers.

The Althing’s sessions were timed by the summer sun: they met in June, when the long days made travel and outdoor assembly practical. The parliamentary calendar was thus governed by the very light cycle that still shapes Icelandic life today.

The Althing is still Iceland’s parliament, now meeting in Reykjavik year-round.

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