The 550th birth anniversary celebrations, Prakashotsava of Guru Nanak Dev Ji is being celebrated with religious fervour and gaiety in Bihar. <br />''<br />''The main function is being organised at Takht Shri Harmandir Sahib gurudwara in Patna Sahib in the state capital.<br />'' <br />'' A huge morning procession (prabhat pheri) with Nishan Sahib lead by Panj Pyare was carried out this morning from Takht Shri Harimandir Sahib which passed through many parts of Patna. A three-day-long Akhand Path has been started which would conclude on Guru Purnima on 12th November.<br />'' <br />'' Tomorrow Nagar Kirtan and Shobha yatra will be carried out and the commemoration would conclude on Tuesday. Kabi Darbar and special prayers would be organised on Guru Purnima. Large number of Sikh devotees arriving at Takhat Shri Harimandir Sahib Gurudwara to pay their obeisance.<br />''