Why a code? These clocks were designed before smartphones became widespread. City codes correspond to longitude, latitude, and a chosen calculation method (like the or London Central Mosque method, both common in the UK). London’s code factors in its GMT timezone, 51.5° N latitude, and the twilight angle for true dawn (Fajr) and dusk (Isha).
For , the correct city code is often 011 or 008 , depending on the exact model (e.g., Al Fajr B135, B138, or older white-dial units). Entering the wrong code could mean Fajr starting minutes too early or Isha ending too late — a major issue during London’s famously long summer days or short winter ones. al fajr clock city code london
If you’ve ever used an brand Islamic prayer clock or app, you’ve likely come across a small but crucial setting: the City Code . Unlike modern GPS-based apps, many Al Fajr devices rely on preset numeric codes to calculate accurate prayer times based on location. Why a code
Interestingly, some newer Al Fajr models also ask for a first (e.g., 044 for the UK), then the city code. A common mistake is setting London’s code but forgetting to adjust for Daylight Saving Time (BST) — since most clocks don’t auto-update for DST. In summer, you’d manually shift the clock forward one hour while keeping the city code the same. London’s code factors in its GMT timezone, 51
For Londoners, getting the code right isn’t just about precision — it’s about catching the true Fajr before work or ensuring Taraweeh prayers end on time. It’s a small numeric key into a centuries-old spiritual rhythm, coded into a humble desktop clock.