Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
Observance in Gujarat, India
Chandani Padva or Chandi Padvo is an occasion when Surtis (Gujarati people from Surat) enjoy a popular local variety of sweet Ghari, Bhushu (namkin). The festival falls on a day after Sharad Poornima, the last full moon day in the Hindu calendar. People generally gather on the terrace with friends and family and enjoy delicious Gari and Bhushu.