Regional
Europe
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International Swiss Optimist Championship 2020
Thun, Thunersee
Switzerland
Regional
Europe
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South East European Open Optimist Cup (SEEOOC) - CANCELLED
Palić Lake
Serbia
Continental
Africa
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2020 Optimist African Championship - POSTPONED/HOST WITHDRAWN
Hammamet
Tunisia
Regional
Europe
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United 4 Sailing Regatta 2020
Regatta Center Medemblik, Medemblik
Netherlands