lairgiyassir/manazel

Manazel Project tracked the history of crescent visibility in Morocco over the past 13 years and leverages this historical data to predict the beginning of each Hijri month. # 🇲🇦 Manazel Project ____ مشروع منازل The **Manazel Project** aims to accurately determine the beginning of each Hijri month in Morocco 🇲🇦 by analyzing 13 years of crescent visibility data and tuning the ODEH criterion using **ARCV** and **W_tot** features. This approach, combined with logistic regression learning model, achieves **98.83% accuracy** in predicting the start of the Hijri month. ## ODEH Criterion in Morocco - Distribution of Moroccan Crescent Visibility Announcements. - According to the ODEH criterion, Moroccan authorities have performed remarkably well in crescent sighting over the last 13 years. The majority of announcements were predicted **A** and **B**, which aligns with Morocco’s practice of **naked-eye crescent visibility** for determining the Hijri calendar. - However, there is a notable limitation: when ODEH classifies the crescent visibility as **B**, it becomes harder to predict whether the crescent will actually be seen. Despite this, the plot shows that **A** classifications have the highest probability of confirmed visibility, followed by **B**. - Motivated by these observations, we conducted a deeper analysis of Moroccan crescent visibility over the past 13 years and trained a machine learning model that **tunes the ODEH criterion** based on **ARCV** and **W_tot** features. ## Astronomical Parameters and Visibility Criteria The new criterion proposed by Mohammad Odeh is based on two key astronomical parameters (Read the article): ### ARCV (Arc of Vision) - **Definition:** ARCV is the angular difference in altitude between the Moon and the Sun. It quantifies how high the Moon is above the horizon relative to the Sun at the time of observation. - **Significance:** A higher ARCV reduces the atmospheric extinction (dimming) of the crescent, thereby increasing its apparent brightness and improving the likelihood of naked-eye visibility. ### W_tot (Topocentric Crescent Width) - **Definition:** W_tot measures the width of the illumina …