Sunnah fasting days in December 2048

December 2048 spans Safar 1471 – Rabi' al-awwal 1471 AH on the standard Umm al-Qura reckoning. Below is every recommended fasting day in the month with its exact date. If your community's moon sighting runs a day ahead or behind, shift the Hijri dates by one day — the converter and calendar feed both have a ±1 sync setting for exactly this.

To understand any of these days — the White Days, Mondays & Thursdays, Ashura, Arafah — the blog walks through each one with sources quoted verbatim.