The Philippine Crescent Observation Network

On the 29th of each lunar month, NCMF and Darul Ifta' observers monitor the horizon across Mindanao and the Sulu archipelago, including prominent coastal spots in Tawi-Tawi, Sulu, and Zamboanga.

Verification and Presidential Proclamation

Once the Grand Mufti verifies moon sighting testimonies, NCMF officially advises Malacañang Palace to declare the national holiday proclamation for the country.

Day Transition Dynamics

The civil calendar updates at 12:00 AM midnight Philippine Standard Time (PST / Asia/Manila, UTC+8), while the religious night begins at sunset with the Maghrib prayer.