Ramadan

According to Copilot AI:

“The Islamic (Hijri) calendar is based on the phases of the Moon, making each month roughly 29–30 days long. A lunar year is about 354 days, which is about 11 days shorter than the solar year used in the Gregorian calendar.

Because of that difference:

• Ramadan begins about 10–12 days earlier each Gregorian year.

• Over a 33‑year cycle, Ramadan completes a full rotation through all seasons.”