 Indian Express | Celebrating Onam in the city IBNLive.com The first day of Onam is known as Atham. Making of Pookalam, the exquisite floral rangoli starts on this day and everyday a new design is added to the existing motif till Thiruvonam, the 10th and last day of the festival when the Aththa Poo (floral ... Onam celebrations begin in Kerala Keralites gear up to celebrate Onam Ahmedabad readies for Onam with Pookalam |