Approximately how many years does it take for the Islamic lunar calendar to complete a full cycle through all four seasons?

Explanation

– The Islamic lunar calendar takes approximately 33 years to complete a full cycle through all four seasons, since it lacks the periodic adjustments used to keep solar calendars aligned with the seasons.
– This gradual shift means that occasions like Ramadan and Hajj occur at varying points throughout the solar year across different decades.
– For exams, remember that this lack of seasonal fixation reflects the Islamic calendar’s deliberate reliance purely on lunar observation rather than solar alignment.