Arbor Day in New Zealand

European Bicycle Day on June 3;

Ecologist Day in Kazakhstan and Russia on June 5;

Coral Triangle Day on June 9 (The CTD was first held on June 10, 2012, as a regional interpretation of World Oceans Day. During the 8th Coral Triangle Initiative on Coral Reefs, Fisheries and Food Security (a multilateral partnership to safeguard the Coral Triangle's marine and coastal biological resources) Senior Official Meeting, member countries declared to designate the Coral Triangle Day to be held annually. The region covers the exclusive economic zones of six countries: Indonesia, Malaysia, Philippines, Papua New Guinea, Solomon Islands, and Timor-Leste);

Global Wind Day on June 15 (international);

Arbor Day in Costa Rica on June 15;

World Sea Turtle Day on June 16 (WWF is the world’s leading independent conservation organisation);

Dump The Pump Day on June 18 (Third Thursday of June)