Ramadan Will Happen Twice in 2030 Due to Calendar Quirk

Ramadan will occur twice in 2030 due to the difference between the Islamic and Gregorian calendars. Muslims around the world will observe intermittent fasting for a total of 36 days—30 in January and six in December. This rare event last occurred in 1997 and will not happen again until 2063.

The Islamic calendar follows lunar cycles, lasting about 354 days—roughly 11 days shorter than the Gregorian year. Because of this, Ramadan shifts earlier each year, sometimes falling twice within 12 months. In 2030, the first Ramadan will begin on January 5 (1451 AH), while the second starts on December 26 (1452 AH).

The start of Ramadan depends on the sighting of the crescent moon. Some countries, like Saudi Arabia, Pakistan, and Egypt, rely on traditional moon sighting, as seen in 2026 when multiple nations confirmed Ramadan's start on February 19. Others, including Germany—where over 85% of mosques follow scientific calculations—use astronomical methods to determine the date.

Fasting hours vary by season, with shorter fasts in winter and over 17 hours in summer for some regions. This affects how Muslims experience Ramadan depending on the time of year it occurs.

The double occurrence of Ramadan in 2030 will result in 36 days of intermittent fasting spread across January and December. The event highlights the ongoing debate between traditional moon sighting and scientific calculations for determining Islamic months. After 2030, the next time this happens will be in 2063.