When Is the Shortest Day of the Year in the UK?

·Published: 8 August 2026

The shortest day of the year in the UK falls on the winter solstice, usually 21 December but occasionally 22 December. London receives roughly 7 hours 50 minutes of daylight, while Edinburgh gets about 6 hours 57 minutes because it lies farther north. The date marks the least daylight, yet it does not normally bring either the earliest sunset or the latest sunrise.

Why the solstice can fall on 21 or 22 December

The winter solstice is an astronomical event: the northern half of Earth reaches its maximum tilt away from the Sun. It happens at one precise moment worldwide, although the calendar date depends on the local time zone. In the UK, that moment usually lands on 21 December. In some years, its timing places it on 22 December instead.

The date shifts because a calendar year does not match Earth’s journey around the Sun exactly. Earth takes about 365 days and nearly six hours to complete an orbit, while an ordinary calendar year contains 365 days. Leap years periodically add 29 February and pull the calendar back towards the astronomical cycle. Small variations in Earth’s orbit also affect the exact solstice time, so it is more accurate to think of the solstice as a moving moment rather than a fixed date printed permanently on the calendar.

How much daylight London and Edinburgh receive

Near the solstice, London typically has about 7 hours 50 minutes between sunrise and sunset. Sunrise is around 8:04 am and sunset around 3:54 pm, with a slight variation from year to year. That leaves commuters travelling to work in morning darkness and many pupils leaving afternoon activities close to dusk. Cloud can make the day feel shorter, but it does not alter the calculated interval between sunrise and sunset.

Edinburgh has roughly 6 hours 57 minutes of daylight at the same point in December. Sunrise is around 8:42 am and sunset close to 3:39 pm, again with small annual variations. Edinburgh therefore receives nearly an hour less daylight than London on the shortest day. The contrast comes from latitude: Edinburgh lies farther north, where the Sun follows a lower and shorter path across the winter sky.

The pattern reverses as summer approaches. Northern parts of the UK gain daylight more rapidly through spring and eventually have longer summer days than southern England. This seasonal contrast becomes especially clear on a train journey north: a December afternoon can darken noticeably earlier by the time the train reaches Scotland, while a June evening remains light much later there.

Why the earliest sunset comes before the solstice

The earliest sunset does not coincide with the shortest day because noon on a clock and solar noon do not stay perfectly aligned throughout the year. Earth travels around the Sun in a slightly elliptical orbit, and its axis is tilted. Together, these features make the apparent solar day vary slightly. Clock time continues at a uniform pace, while the Sun’s position shifts against it by a few minutes across the season.

As a result, UK sunsets begin getting later before the winter solstice, even though sunrises are still getting later. In London, the earliest sunset usually occurs around the middle of December. Edinburgh follows a similar pattern, although its precise times and dates differ. After that turning point, the evening gains a little light, but the continuing movement of sunrise towards a later time can still reduce the total daylight until the solstice.

The latest sunrise usually arrives after the solstice, around the final days of December or the opening days of January, depending on location and year. This explains the familiar impression that mornings keep becoming darker even after the shortest day has passed. The solstice measures the complete span from sunrise to sunset; it does not require both ends of that span to reverse direction together.

When the longer days become noticeable

Daylight starts increasing immediately after the solstice, but the first daily gains are small. At first, you may notice the change more readily in the afternoon because sunset has already begun moving later. Morning light can appear unchanged, or sunrise may become later for several more days. A single grey December afternoon can also hide a gain of a minute or two.

By early January, the later sunset is usually easier to see on a regular commute, school run or afternoon walk. By the middle of January, the accumulated increase is much clearer at both ends of the day. The rate of change then grows as spring approaches, so February evenings lengthen more noticeably than those immediately after Christmas. Your position within the UK matters too: northern locations experience a larger seasonal swing and gain daylight more quickly after their very short December days.