The year that is expected to have three EIDs is 2030.
This unique situation arises because the Islamic calendar is lunar-based, meaning its months are determined by the cycles of the moon. This results in the Islamic year being approximately 11 days shorter than the Gregorian calendar year. Over time, Islamic holidays, including Eid, shift throughout the Gregorian calendar.
In 2030, Ramadan, the Islamic month of fasting which culminates in Eid al-Fitr, is expected to occur twice within the Gregorian calendar year: once starting in January and again starting in December. Since Eid al-Adha also falls within the same Gregorian year, this leads to a total of three EIDs (two Eid al-Fitr and one Eid al-Adha) in 2030.