Purnia. Chaiti Chhath will start from April 12 with Nahay-Khay. Kharna puja will be held on 13th April. After offering arghya to the setting sun on 14th April and the rising sun on 15th April, the fast will be performed. Chhath is one of the great festivals of Hindus in which apart from the fasting person, all the members of the house worship Lord Surya with devotion and emotion. Thekua is prepared for Prasad in a sacred manner at home. Also, by arranging fruits and sweets in a bowl made of bamboo, they offer Arghya to the Sun God at artificial Chhath ghats or rivers and ponds. This festival has religious as well as scientific importance. Especially the message of environmental protection is attached. Pandit Suraj Bhardwaj explains that Chaiti Chhath is also called the festival of changing seasons in which we suddenly enter summer from the cold season. For this reason, it teaches us to keep our eating habits and daily routine balanced. According to Ayurveda, Chaiti Chhath has been given special significance. The effect of food is directly related to the purification of mind and soul along with the body. Pandit Suraj Bhardwaj, based at Rambagh Chowk of the city, says that sun worship has special importance in Sanatan Dharma. Worshiping the Sun provides relief from physical and mental troubles. Also, the Sun is strong in the horoscope. If the Sun is strong in the horoscope, one gets desired success in career and business. Since time, Lord Suryanarayan is worshiped with rituals. Chhath Puja, a great festival of folk faith since the Vedic period, is celebrated in Bihar to worship the Sun. The four-day festival starts from the day of Nahay-Khay. On this day, devotees take bath, meditate and worship the Sun. Take food after worshiping the Sun. In this, rice, pulses and bottle gourd vegetable are eaten. Performing puja on the day of Nahay-Khay greatly increases the happiness and good fortune of the fasting person. Kharna Puja: On this day, devotees prepare kheer made of milk and rice in a sacred manner. After this, puja is done by offering kheer and ghee soaked bread, banana and fruits on banana leaves. After this, all the members of the family sit together and receive the Prasad. Not only this, women wish each other well by applying vermilion. On the first day, in the evening, those fasting on river-pond or artificial Chhath ghats offer Arghya to Lord Bhaskar along with thekua, banana, lemon and dry fruits and sweets in the evening. Stay awake the whole night and sing the praises of this festival through Chhath songs and on the next day in the morning, fasting people offer Arghya to the rising sun with various types of dishes and fruits in a bowl made of bamboo or brass. After this, at Chhath Ghat itself, women apply vermilion to each other and wish each other well. After this the fast ends with Paran.