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About An Nirwana

An Nirwana — Crescent Moon Calculation & Rukyatul Hilal

The official application of the An-Nirwana Padepokan Ciparahu, Lebak, Banten, for calculating the crescent moon, prayer times, Qibla direction, and assisting with field rukyat observations.

HISAB METHOD
• Irsyadul Murid (IM) Method — crescent sighting date 1410 AH
• Calculation of ijtima', mar'i height, elongation, crescent age
• 516 regions in Indonesia + observer GPS location
• Hisab criteria: MABIMS, Ministry of Religious Affairs, NU, Muhammadiyah, and others

KEY FEATURES
• Initial Month Hisab (HAB) — rukyat night prediction
• Interactive Hijri calendar
• Prayer times & Qibla direction
• Pranata mangsa & astronomical data
• AR Hilal Observation — crescent direction guide + camera
• Rukyat session: record Visible / Invisible / Clouds
• Photo & video documentation with hisab metadata watermark
• Observation report (HTML / PDF print)
• Astronomy article from falak.onenationpress.com

FIELD OBSERVATION
Point the camera to the western horizon after Maghrib. The app displays real-time hilal position predictions and helps document rukyat sessions — it does not replace observers or isbat meetings.

OFFLINE & PRIVACY
• Core hisab calculations run offline
• Location is only used when the app is open (foreground)
• Observation session data is stored locally on the device
• No login account, no in-app ads

DEVELOPER
An-Nirwana Ciparahu Padepokan
Jl. Cikadongdong, Ciparahu Village, Lebak – Banten
Website: https://falak.onenationpress.com
WhatsApp: 0852-8616-3919

Hisab engine attribution: Irsyadul Murid Method.
Weather: Open-Meteo. Geocoding: OpenStreetMap/Nominatim