Four-day Chhath Puja celebrations have begun across the nation from today. During this celebrations, devotees pay special prayer to the Sun God. It is a festival connected with purity, devotion to the Sun God who is considered as the source of life on this earth and is regarded as the deity who fulfills all our wishes. People across the country are observing ,Nahaye Khaye, today as entire atmosphere in Bihar reverberates with devotional songs. Devotees start their day with holy bath early in the morning in river Ganga and bring some water to their home to prepare the offerings. They take only one meal a day known as \u2018Kaddu bhat\u2019 cooked only by using the bronze or soil utensils and mango woods over the soil stove. Devotees keep fast for whole day and break their fast in the evening after sunset on worshiping Sun. They offer kheer, puris and fruits in the puja. After taking meal in the evening, they go on a fast without water for the next 36 hours. Standing in knee deep water devotees will pay oblation to the setting Sun on Sunday. Four day Chhath puja will conclude on Monday morning after paying oblation to the rising Sun.