Gianni is observed as a celebration of a crop that has come into a position to be harvested. Hunza/Nagar valleys were once remote mountainious valleys, that was subjected to sporadic famines. So the farmers celebrated that their crops are not damaged by extreme weather conditions and they can survive the harsh seasons coming their way.In Hunza the celebrations starts around ten days before day.
The day of Nowruz has its origins in the Iranian religion of Zoroastrianism and is thus rooted in the traditions of the Iranian peoples; however, it has been celebrated by diverse communities for over 3,000 years in Western Asia, Central Asia, the Caucasus, the Black Sea Basin, the Balkans, and South Asia.[27][28][29][30] Presently, while it is largely a secular holiday for most celebrants and enjoyed by people of several different faiths.