Bidspirit auction | 1975 (20 April) Launch of

1975 (20 April) Launch of First Indian Satellite First Day Cover FDC, Hyderabad and SRIHARIKOTA RANGE cancelled & alongside Signatured (Unknown). India's first satellite, Aryabhata, was launched on April 19, 1975. Sriharikota functioned as the tracking and monitoring station for the satellite's signals.