London and the M25 use the official London Unified Prayer Timetable (LUPT) — the timetable East London Mosque, London Central Mosque and most London mosques follow. Everywhere else in the UK uses the Muslim World League (MWL) method (Fajr 18°, Isha 17°) computed locally from each city's coordinates. No third-party API — all times are calculated on-device at build time.
Last reviewed: Tuesday, 11th August 2026 · Source: London Unified Prayer Timetable (LUPT) · Suggest a correction
London & the M25 — London Unified Prayer Timetable
London mosques do not use generic astronomical angles for Fajr and Isha. They follow the London Unified Prayer Timetable, adopted in 2011 by Hizbul Ulama UK and the Central Moon Sighting Committee of Great Britain so that mosques across the capital pray at the same times.
- Sunrise, Dhuhr, Asr and Maghrib are derived from precise sun positions for central London, with published adjustments (sunrise −3 min, Dhuhr +5 min, Maghrib +3 min).
- Fajr and Isha come from the Hizbul Ulama observation tables — not a fixed angle.
- Asr is published in two forms: Standard (Mithl 1) and Hanafi (Mithl 2).
For a detailed comparison with the MWL method, see Why London prayer times differ.
Rest of the UK — Muslim World League (MWL)
Outside London and the M25, we use the Muslim World League (MWL) method: Fajr at 18° and Isha at 17° below the horizon. This is the most widely used astronomical method among UK mosques outside London. Times are computed using the open-source adhan library from each city's precise latitude and longitude.
You can switch to alternative methods (ISNA 15°, Egyptian, Karachi 18°) and Hanafi Asr on each city page using the settings on the prayer times table.
Rounding & precaution (ihtiyat)
Sunrise/Maghrib rounded with precautionary minutes (ihtiyat); times are start times, not iqamah. London Unified publishes specific offsets (for example sunrise −3 min and Maghrib +3 min). Always treat published times as the start of the prayer window — confirm iqamah with your local mosque.
Rounding disclosure reviewed 2026-07-17.
High-latitude adjustment
At northern UK latitudes — Aberdeen, Inverness, Glasgow, Edinburgh and similar — the sun may not reach 18° below the horizon during midsummer. When this occurs, Fajr and Isha are estimated using the "one-seventh of the night" method. A notice is displayed on the affected city page. Always confirm with your local mosque.
Hijri dates & Islamic events
Hijri dates on city pages and the Islamic calendar follow the London Unified table where available (moon-sighting based). The Hijri date converter uses the arithmetic Tabular Islamic calendar; UK mosques may differ by one day depending on local moon-sighting announcements. Islamic event banners (Ramadan, Eid, Ashura, etc.) are derived from the LUPT table.
Editorial standards & verification
- Prayer times are recomputed daily during our automated build and deploy cycle (Tuesday, 11th August 2026).
- Automated verification checks run before every deployment (
pnpm run verify). - Mosque profiles are researched from public sources and community submissions.
- This site is independent — not affiliated with any mosque or organisation.
- No adverts, no tracking, no registration required.
Frequently asked questions
Which calculation method does UK Prayer Times use?
London and the M25 area use the official London Unified Prayer Timetable (LUPT). All other UK cities use the Muslim World League (MWL) method — Fajr at 18° and Isha at 17° — computed locally from each city's coordinates.
What is the London Unified Prayer Timetable?
The London Unified Prayer Timetable is the agreed timetable for London mosques, adopted in 2011 by Hizbul Ulama UK and the Central Moon Sighting Committee of Great Britain. East London Mosque, London Central Mosque and most mosques inside the M25 follow it. Its Fajr and Isha come from moonsighting-committee observation, not a fixed astronomical angle.
Do you use a third-party prayer times API?
No. All prayer times are computed on-device at build time. London times come from our ingested official LUPT table; all other cities use the open-source adhan astronomical library with precise solar calculations for each city's latitude and longitude.
How are high-latitude cities handled?
At northern UK latitudes (e.g. Aberdeen, Inverness, Glasgow, Edinburgh) the sun may not reach 18° below the horizon in summer. When this occurs, Fajr and Isha are estimated using the "one-seventh of the night" method and a notice is shown on the relevant city page.
What is the difference between prayer start times and iqamah?
The times on this site are astronomical prayer start times — the moment each prayer window opens. Each mosque sets its own iqamah (congregational prayer) time, typically 15–30 minutes later. Always confirm with your local mosque.
How often are times updated?
Prayer times are recomputed daily during our automated build and deploy cycle. Each city page shows the date the times were calculated. Automated verification checks run before every deployment.