June 21 is the 172nd day of the year (173rd in a leap year) in the Gregorian calendar. The Zodiac sign for individuals born on this day is Cancer.
June 21st has several different holidays and observances that are celebrated on this day each year, in different countries around the world. The Summer Solstice sometimes falls on June 21st. It depends on the shift of the calendar whether or not the Summer Solstice falls on June 20th or June 21st.http://scienceworld.wolfram.com/astronomy/SummerSolstice.html Some celebrations on this day are related to the Summer Solstice. These include National Day in Greenland, and World Music Day. There are also several countries that celebrate Father's Day each year on this day. These countries include Egypt, Lebanon, Jordan, Syria, and Uganda.
In Canada, National Aboriginal Day is celebrated on June 21st. This day is observed to celebrate the contributions that the Aboriginal people have made to Canada. This day was proclaimed National Aboriginal Day on June 13, 1996, by Governor General Romo LeBlanc.Today in the Northwest Terrirories, this is a statutory holiday.http://www.calendar-updates.com/info/holidays/canada/aboriginal.aspx
World Humanist Day is also celebrated on this day by Humanist organizations around the world. The goal of this observance is to spread awareness of Humanism, in order to help effect change around the world. Events and celebrations are held to allow Humanists to gather together socially and promote the positive values of the Humanist movement.