April 12

On April 12, 1961, Yuri Gagarin became the first human to orbit Earth aboard Vostok 1, inspiring generations of space exploration. Russia honors this milestone with Cosmonautics Day, featuring ceremonies, educational events, and museum exhibitions. The United Nations designated April 12 as the International Day of Human Space Flight to recognize the importance of space science for humanity. Meanwhile, Yuri's Night has evolved into a global celebration, hosting parties, lectures, and concerts that unite space enthusiasts worldwide in a shared passion for discovery.

Cosmonautics Day marks the anniversary of Yuri Gagarin becoming the first human to orbit Earth in 1961 onboard Vostok 1. Instituted by the Soviet Union in 1962, the holiday celebrates Russia's pioneering role in space science and exploration. Across the country, museums, schools, and research centers host events, exhibitions, and educational programs to inspire future generations. Rocket launch reenactments and commemorative ceremonies pay tribute to cosmonauts past and present. It also serves as an opportunity to reflect on the scientific, cultural, and diplomatic impact of space achievements on Russian identity.

The International Day of Human Space Flight, proclaimed by the UN in 2011, honors Yuri Gagarin's pioneering mission on April 12, 1961. It recognizes the key role of human space exploration in advancing scientific knowledge, technology, and international cooperation. Schools, research institutions, and space agencies around the globe organize conferences, public lectures, and outreach programs. The day encourages youth engagement in STEM fields and emphasizes the relevance of space science to sustainable development on Earth. By celebrating historic achievements, the observance fosters global unity and inspiration for future space endeavors.

Yuri's Night began in 2001 on the 40th anniversary of Yuri Gagarin's flight and the first Space Shuttle mission. This unofficial international observance brings together space fans, educators, and professionals through parties, workshops, and live streams. Events range from stargazing gatherings to lectures by astronauts and scientist talks, fostering public excitement about space exploration. Hosts coordinate activities at planetariums, museums, universities, and even nightclubs, creating a festive atmosphere that celebrates human achievements in space. Yuri's Night aims to inspire a new generation to look to the stars and consider careers in aerospace, science, and engineering.