These times are calculated for Bolton (53.58°, -2.43°) using the Moonsighting Committee Worldwide method, which is the convention most widely used in United Kingdom. The default Asr time is the standardtime, and you can change it in the settings above. Times are shown in local time and account for daylight saving where it applies. Mosques sometimes add a few minutes as a precaution, so where your mosque's timetable differs, follow your mosque.

At Bolton's latitude, the sky does not become fully dark on some summer nights, so Fajr and Isha cannot be calculated from the usual twilight angles. During that period these times are estimated with the rule recommended for high latitudes, and local timetables vary more than usual.

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