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18- July-1980	Second Experimental launch of Space Launch Vehicle -3 (SLV-3) by Indian made 35 kilogram Rohini satellite (RS-1) successfully placed in orbit. It was used for measuring in-flight performance of second experimental launch of SLV-3. The launch took from Sriharikota and India became the sixth nation to put a satellite into orbit.
18- July-1980	Madras Doordashan Centre transmitted their first colour transmission for one hour in the afternoon, and this programme was re-transmitted simultaneously by Delhi Doordarshan, India.