International Observe the Moon Night 2026 will take place on September 19, offering an ideal opportunity to observe the moon’s surface features, such as craters, mountains, and ancient lava plains. This event occurs around the first quarter moon, typically in September or October, when the moon is visible in the late afternoon and early evening. This phase is especially good for viewing the terminator — the line dividing the moon’s day and night sides — where long shadows enhance the visibility of lunar features, according to NASA. The global event aims to promote interest in lunar observation, science, and exploration, which has grown significantly in recent years. NASA and its international partners are working to return humans to the moon as part of the Artemis program, which seeks to establish a sustainable presence on the lunar surface and prepare for future missions to Mars. People can participate in International Observe the Moon Night either as part of a group or individually from their homes. Those looking for local events can use NASA’s interactive global map, which lists hundreds of moonwatching activities, including star parties organized by astronomy clubs and virtual events hosted by observatories and amateur astronomers. Individuals can also host their own celebration and register on NASA’s map to allow others to join in. For those who prefer to observe from home, simply stepping outside with the naked eye, binoculars, or a telescope can provide a rewarding experience. Additionally, NASA offers access to hundreds of high-resolution images of the moon taken by the Lunar Reconnaissance Orbiter and astronauts on the Artemis II mission, which explored the far side of the moon. Those with a 3D printer can even create models of the lunar surface using data from the LRO, including the landing site of the Apollo 11 mission, which touched down in the Sea of Tranquility in July 1969.