It is also known as Sharad Navratri as it's celebrated at time of the beginning of winter. This generally falls in the thirty day period of September and/or Oct In keeping with Gregorian calendar. महानवमी, (नौवां दिन) शरद नवरात्र व्रत पारण Navaratri in Gujarat is probably the state's main festivals. https://begindirectory.com/listings13062968/considerations-to-know-about-navratri