NEW DELHI: Isro will launch the third of seven satellites of its ambitious navigation system IRNSS on October 16, the space agency said on October 16. IRNSS-1C, the third satellite of the Indian Regional Navigation Satellite System (IRNSS) will be launched with the help of Polar Satellite Launch Vehicle (PSLV-C26) on October 16, Isro said. The launch window of the mission opens at 1.32am and last till 1.47am. The lift-off is scheduled at the opening of the launch window at 1.32am. The final phase of checks is in progress to carry the 1,425kg satellite. “The Mission Readiness Review (MRR) Committee and the Launch Authorization Board (LAB) met on October 7 to review the progress of pre-launch activities and cleared the launch for October 16. “The 67 hour countdown for the mission will commence at 6.32am on October 13,” Isro said in a statement. IRNSS is an independent navigation satellite system developed by India to provide accurate position information service to users in India.