Garmin Prayer Times Watch Face

A prayer times watch face for Garmin Epix Pro (Gen 2) and compatible AMOLED devices. All prayer time calculations run on-device using GPS — no internet required.

Features

• 6 daily prayer times: Fajr, Sunrise, Dhuhr, Asr, Maghrib, Isha
• Next prayer countdown with progress arc
• Hijri calendar date (Kuwaiti/tabular algorithm)
• 11 calculation methods: ISNA, MWL, Egyptian, Umm al-Qura, Dubai, Karachi, Kuwait, Qatar, Singapore, Tehran, Turkey
• Iqama time offsets (configurable per prayer)
• Asr calculation: Shafi (standard) or Hanafi
• Friday/Jumuah detection
• AMOLED always-on display (simplified low-power mode)
• Configurable accent color

Architecture

source/
├── GarminPrayerTimesApp.mc     # App entry, GPS listener
├── GarminPrayerTimesView.mc    # Watch face rendering
├── PrayerCalculator.mc         # Prayer time math (praytimes.org port)
├── HijriCalendar.mc            # Gregorian → Hijri conversion
└── PrayerState.mc              # State management & caching

Settings (via Garmin Connect phone app)

Setting	Default	Description
Calculation Method	ISNA	Choose from 11 regional methods
Asr Method	Shafi	Shafi (standard) or Hanafi
Show Iqama	On	Display iqama times
Iqama Offsets	Varies	Minutes after adhan per prayer
Accent Color	Red	Highlight color for next prayer

Building & Running

VS Code

1. Install Connect IQ SDK and VS Code "Monkey C" extension
2. Open this folder in VS Code
3. Select target device (Epix Pro 47mm recommended)
4. Build: Ctrl+Shift+B or Cmd+Shift+B
5. Run in simulator: F5

CLI

# Set SDK path
SDK_BIN="$HOME/Library/Application Support/Garmin/ConnectIQ/Sdks/connectiq-sdk-mac-8.4.0-2025-12-03-5122605dc/bin"

# Build
"$SDK_BIN/monkeyc" -o bin/GarminPrayerTimes.prg -f monkey.jungle \
  -y "$HOME/Library/Application Support/Garmin/ConnectIQ/developer_key" \
  -d epix2pro47mm -l 0

# Launch simulator (first time / if not already running)
"$SDK_BIN/connectiq" &

# Run on simulator
"$SDK_BIN/monkeydo" bin/GarminPrayerTimes.prg epix2pro47mm

Note: The simulator does not grant GPS permission to watch faces. The app falls back to hardcoded coordinates (Quebec City) when no GPS is available. On real hardware, GPS works normally.

Design Decisions

• Watch face (not widget/app) — always visible, zero navigation
• On-device calculation — works offline, no API calls
• Calculate once per day — recalculate only on date or location change
• praytimes.org algorithm — same math as adhan-swift, battle-tested