How are prayer times calculated for Gravesend?
Sitting at roughly 51.44°N in Kent, Gravesend 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 07:35 and Maghrib falls at 17:48, giving 10h 12m between the two. As the year turns this daylight window lengthens and shortens, which is why Fajr (currently 05:44) and Isha (currently 19:33) shift gradually from week to week.
When praying in Gravesend, the Qibla is faced towards the Kaaba in Makkah, which lies on a bearing of 119° from here, roughly to the south-east — a great-circle distance of about 4,760 km.
Prayer times in Gravesend are very close to those in neighbouring towns, though they differ by a minute or two with distance. Nearby you can also check Chatham (13 km), Gillingham (14 km) and Basildon (17 km).