Battle of Arica Day
Battle of Arica Day is held on June 7. Arica y Parinacota Region, Chile. This event in the first decade of the month june is annual.
Canadian Forces Day on June 6 (celebrated on the first Sunday in June);
Normandy landings of the Allied Expeditionary Forces on June 6 (D-Day), a.k.a. Operation Neptune, part of Operation Overlord (1944);
Union Dissolution Day on June 7 (Norway. The Union Dissolution Day, observed in Norway on 7 June (though not a public holiday), is marked in remembrance of the Norwegian parliament's 1905 declaration of dissolution of the union with Sweden, a personal union which had existed since 1814);
Bounty Day on June 8 (Norfolk Island);