The Akashi Municipal Planetarium, located in Akashi City, Japan, stands prominently atop the Japan Standard Time meridian at 135 degrees east longitude. Known as the "Museum of Time and Space," this facility offers visitors a unique opportunity to learn about astronomy and the concept of time through engaging exhibits and a state-of-the-art planetarium. Opened in 1960, it not only educates but also serves as a cultural landmark, providing breathtaking views of the Akashi Strait and hosting various events and educational programs targeted at all ages.

Its impressive structure features a 20-meter dome planetarium, exhibition rooms, observation decks, and a dedicated children’s space, accommodating various activities including special exhibitions, star observation nights, and children’s astronomy workshops. The planetarium's audi-visual presentations and traditional programming foster a deeper understanding of celestial phenomena. With initiatives like "Sleepy Planetarium" events and a historical focus on the 135-degree meridian, Akashi Municipal Planetarium continues to inspire curiosity and a love for the cosmos among its visitors.