High-Latitude Prayer Times 2027

Fajr begins at true dawn and Isha when twilight ends, which most methods place when the sun is 15–18° below the horizon. North of about 48.5° the midsummer sun never sinks 18° below the horizon, so the night never gets dark enough: twilight runs from sunset to sunrise. In 66 of the 407 cities we cover, the sun never sinks 18° below the horizon for part of the summer, so true dawn and the end of twilight, which mark Fajr and Isha, never come. In Anchorage this lasts 127 nights in 2027 (19 Apr – 23 Aug); in London, 59.

Scholars and calculation bodies use an approximation for those nights: the "seventh of the night" rule (Fajr begins in the last seventh of the night, Isha ends the first seventh), the "middle of the night" rule, or the time from the nearest latitude or date when the angle is reached. Our pages use Adhan's recommended rule for the latitude; the Moonsighting Committee method, our UK default, applies its own seasonal adjustment. Many UK mosques publish their own fixed timetables for these weeks.

On the summer solstice, Newcastle upon Tyne (United Kingdom) has the shortest gap among our cities: 3h 14m from Isha to the next Fajr.

Not in 2027: Ramadan falls in February and March, when nights are long. Ramadan moves about 11 days earlier each year and reaches the northern summer again in the mid-2040s.