The Mexican Islamic Sighting Assembly
On the 29th of each lunar month, imams and community leaders gather at mosques in Mexico City, Guadalajara, Monterrey, and Tijuana. Reports are collated through the Centro Islámico de México before declaring the arrival of Ramadan or the Eids.
Pacific Horizon Astronomical Clarity
Because Mexico stretches across latitudes 14°N to 32°N, its skies along the Baja Peninsula and Pacific coast offer exceptionally dry, cloudless horizons for sighting young lunar crescents.
Day Transition Dynamics & Central Time Synchronization
The civil calendar updates at 12:00 AM midnight Central Time (America/Mexico_City, UTC-6), while religious observance begins at sunset with the Maghrib prayer.