Nowruz, the Persian New Year rooted in Zoroastrian tradition, has been observed on or near the spring equinox for at least 2,500 years, with Achaemenid kings receiving tribute and delegations from across their empire at Persepolis during the festival. Still celebrated today by more than 300 million people across Iran, Central Asia, and the Caucasus, it is one of the oldest continuously observed holidays in human history.
Reliefs at Persepolis, the ceremonial capital built by Darius I, depict processions of tribute-bearers from two dozen nations of the Achaemenid Empire arriving with gifts of gold, textiles, and animals, and many historians connect these images to Nowruz celebrations held at the palace complex around the spring equinox. The festival marked not just a calendar change but a renewal of kingship and cosmic order, central themes in Zoroastrian belief that the New Year represented the triumph of light over darkness.
The holiday survived the fall of the Achaemenid and Sasanian empires, the Islamic conquest of Persia, and centuries of political upheaval, adapting each time while retaining its core rituals: the haft-sin table setting of seven symbolic items, spring cleaning, and family gatherings timed to the exact astronomical moment of the equinox.
Today Nowruz is recognized by the United Nations as an International Day and celebrated from the Balkans to western China, a rare thread of continuity linking the modern world directly to the courts of ancient Persian kings.