Launch date | - Pioneer 6: December 16, 1965, 07:31:00 (1965-12-16UTC07:31Z) UTC
- Pioneer 7: August 17, 1966, 15:20:00 (1966-08-17UTC15:20Z) UTC
- Pioneer 8: December 13, 1967, 14:08:00 (1967-12-13UTC14:08Z) UTC
- Pioneer 9: November 8, 1968, 09:46:00 (1968-11-08UTC09:46Z) UTC
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