1980 Five Nations Championship
rugby union competition
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1979–80 in English rugby union1979–80 in European rugby union1979–80 in French rugby union1979–80 in Irish rugby union1979–80 in Scottish rugby union1979–80 in Welsh rugby union1980 rugby union tournaments for national teamsFebruary 1980 sports events in EuropeJanuary 1980 sports events in EuropeMarch 1980 sports events in EuropeSix Nations Championship seasons