Navruz is the name used for Nowruz in Tajikistan and many other Central Asian countries.
The spelling Navruz is common in Tajik, Uzbek, and several other regional contexts. It refers to the spring New Year festival shared across a broad cultural area extending from Iran and Afghanistan through Central Asia and into parts of the Caucasus and South Asia.
Celebrations in Central Asia may include public concerts, traditional sports, feasts, music, dancing, and the preparation of festive foods. Local customs are not identical, so Navruz in Tajikistan should not be treated as a single uniform practice across every country.
Newroz, Nauryz, and Nevruz are related forms of the same wider festival name. Their different spellings reflect local languages and transliteration, not entirely separate holidays.