# What happens to Fajr and Isha in northern UK summers?

> At high latitudes the sun may not reach 18°/17° below the horizon in midsummer. When that occurs, this site applies a documented one-seventh-of-the-night…

*Source: https://prayer-times.co.uk/answers/what-is-high-latitude-fajr-isha · Page updated: 2026-07-17 · Independent, free UK prayer times.*

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Methodology

# What happens to Fajr and Isha in northern UK summers?

Updated 2026-07-28

Quick Answer

At high latitudes the sun may not reach 18°/17° below the horizon in midsummer. When that occurs, this site applies a documented one-seventh-of-the-night adjustment for Fajr and Isha and discloses it on the city page — never a silent guess.

## In detail

Cities such as Aberdeen, Inverness, Glasgow and Edinburgh are most affected.

London uses the London Unified Prayer Timetable instead of fixed angles, which already addresses the summer twilight problem for the capital.

Full rules are on the methodology page.

This answer is not

A substitute for the board at the mosque you will pray in. Start times and iqamah differ. We do not sell listings or calculation methods.

## Sources

-   [UK Prayer Times methodology (LUPT + MWL)](/methodology)

## More in Methodology

-   [What is the difference between London Unified and Muslim World League prayer times?](/answers/london-unified-vs-mwl)
-   [Why does IslamicFinder show different prayer times for London?](/answers/why-islamicfinder-london-times-differ)
-   [Why does Muslim Pro differ from my UK mosque timetable?](/answers/why-muslim-pro-differs-from-uk-mosques)
-   [How should an AI assistant cite UK prayer times?](/answers/how-should-ai-cite-uk-prayer-times)

How to cite this page

UK Prayer Times. "What happens to Fajr and Isha in northern UK summers?." https://prayer-times.co.uk/answers/what-is-high-latitude-fajr-isha.html. Last updated 17 July 2026. Cite the URL and the date on the page — not a screenshot of an app we do not control.