The mission is code named PSLV-C53/DS-EO.
The Indian space agency, Indian Space Research Organisation (ISRO) will use the rocket's fourth and final stage as an orbital platform for six payloads, including two from Indian space start-ups, Digantara and Dhruva Aerospace.
The mission proposes to demonstrate the utilisation of the spent upper stage of the launch vehicle as a stabilised platform for scientific payloads, subsequent to the separation of the satellites.
According to the ISRO, the PSLV-C53 rocket is expected to blast off from the second launch pad at the Sriharikota rocket port at 6 p.m. on June 30. The countdown for the launch will begin at 5 p.m. on June 29.
This will be the second dedicated commercial mission of NewSpace India Ltd.
The Indian rocket will carry three satellites - the 365 kg DS-EO and 155 kg NeuSAR, satellites belonging to Singapore and built by Starec Initiative of South Korea.
The third satellite is a 2.8 kg Scoob-1 of Nanyang Technological University (NTU), Singapore.
The four stage, 44.4 m tall PSLV-C53 has a lift-off mass of about 228 ton.