- Number of holidays
- 10
- Day of the year
- 181
- Days left in the year
- 184
Social Media Day was established by Mashable in 2010 to celebrate social media’s role in connecting the world — a medium that has grown from 0.97 billion users in 2010 to more than 5 billion by 2025. International Asteroid Day was proclaimed by the UN General Assembly in 2016 to mark June 30, 1908, when the Tunguska meteor exploded over Siberia — flattening an estimated 2,000 square kilometers of forest — to raise awareness for asteroid impact risk and planetary defense. International Day of Parliamentarism was proclaimed by the UN in 2018 to celebrate parliaments as the foundation of representative democracy, observed on June 30 to mark the founding of the Inter-Parliamentary Union in 1889. Congo Independence Day marks June 30, 1960, when the Democratic Republic of Congo gained independence from Belgium after decades of brutal colonial rule under King Leopold II. A feed, a Siberian shockwave, a parliamentary podium, and a flag raised over Kinshasa.
All Holidays On June 30
International Asteroid Day
Armed Forces Day (Guatemala)
Clean Your Disposal Day
Congo Independence Day
International Day of Parliamentarism
National Corvette Day
National Meteor Watch Day
National OOTD Day
Social Media Day
About June 30
June 30 Q&As
What is the most popular holiday on June 30?
On June 30, Social Media Day is the most globally recognized observance, established by Mashable in 2010. International Asteroid Day is the most significant UN science observance, marking the June 30, 1908 Tunguska event, and Congo Independence Day is the most significant national observance, marking June 30, 1960.
What countries celebrate holidays on June 30?
June 30 observances span Democratic Republic of Congo (Congo Independence Day), Guatemala (Armed Forces Day), and the U.S., which hosts National Corvette Day, National Meteor Watch Day, and Social Media Day. International Asteroid Day and International Day of Parliamentarism are observed globally.
What awareness days are on June 30?
June 30 includes International Asteroid Day, proclaimed by the UN in 2016 to raise planetary defense awareness after the June 30, 1908 Tunguska event, and International Day of Parliamentarism, proclaimed in 2018 to celebrate parliaments as the foundation of representative democracy.