The Queen’s Official Birthday is celebrated as a public holiday in some Commonwealth realms and British overseas territories that have Queen Elizabeth II as the reigning constitutional monarch. In most overseas territories, it is observed on the third Monday in June.
Whit Monday, also known as Pentecost Monday or Monday of the Holy Spirit, is a moveable feast in the Christian calendar celebrated the day after Pentecost. Orthodox Whit Monday is a public holiday in some countries, namely Cyprus, Greece, Romania and Ukraine.
World Refugee Day is a United Nations global observance held on June 20 each year. It was established by the UN General Assembly on December 4, 2000.
The third Monday in June is Ride to Work Day. Everyone is encouraged to use a motorcycle or a scooter to get to work.