Portal:Anniversaries/August 28

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1965 — American astronauts L. Gordon Cooper, Jr. and Charles Conrad, Jr. wear Omega Speedmaster watches while orbiting the earth 120 times in 9 days aboard the Gemini V spacecraft
2015 — Girard-Perregaux combines a big date and moon phase complication to the 1966 line, creating the 1966 Large Date and Moon Phases
2018 — Swatch Group and Audemars Piguet jointly announce the Nivachron anti-magnetic balance spring
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