How are prayer times calculated for Colchester?
Sitting at roughly 51.89°N in Essex, Colchester has its own sunrise and sunset each day, so its prayer times are worked out from its exact position rather than a regional average.
Today the sun rises at 07:36 and Maghrib falls at 17:43, giving 10h 7m between the two. As the year turns this daylight window lengthens and shortens, which is why Fajr (currently 05:43) and Isha (currently 19:30) shift gradually from week to week.
When praying in Colchester, the Qibla is faced towards the Kaaba in Makkah, which lies on a bearing of 120° from here, roughly to the south-east — a great-circle distance of about 4,753 km.
Prayer times in Colchester are very close to those in neighbouring towns, though they differ by a minute or two with distance. Nearby you can also check Ipswich (25 km), Chelmsford (34 km) and Southend-on-Sea (40 km).