The first three satellites, Kosmos 38 (reentered 1964-11-08), Kosmos 39 (reentered 1964-11-17) and Kosmos 40 (reentered 1964-11-17), were launched on 18 August 1964.
Tiga satelit pertama, Kosmos 38 (masuk kembali 1964/11/08), Kosmos 39 (masuk kembali 1964/11/17) dan Kosmos 40 (masuk kembali 1964/11/17), yang diluncurkan pada tanggal 18 Agustus 1964.