Flower sales surge on account of Ugadi, (Telugu: ఉగాది, Kannada: ಉಗಾದಿ) (literally - the start of an era) is the new year's day for the people of the Deccan region of India. While the people of Andhra Pradesh and Karnataka use the term Ugadi for this festival, the people of Maharashtra term the same festival, observed on the same day, Gudi Padwa.
Ugadi is celebrated on different day every year because the Hindu calendar is lunisolar calendar. The Saka calendar begins with the month of Chaitra (March/April) and the Ugadi mark the first day of the new year for people who follow the southern Indian lunar calendar, pervasively adhered to in the states of Andhra Pradesh, Karnataka and Maharashtra.
This calendar reckons dates based on the Salivahana era (Salivahana Saka), which begins its count from the supposed date of the founding of the Empire by the legendary hero Salivahana. The Satavahana king Shalivahana (also identified as Gautamiputra Satakarni) is credited with the initiation of this era known as Shalivahana. The Salivahana era begins its count of years from the year corresponding to 78 AD of the Gregorian calendar. Thus, the year 2000 AD corresponds to the year 1922 of the Salivahana Era.