Written by TC Team
Cosmo Planetarium Shibuya marks the harvest moon with a one-night run of themed screenings, most of which finish with a rooftop viewing session over the Shibuya skyline.
The harvest moon — chūshū no meigetsu, the mid-autumn moon — falls on September 25 in 2026. Unusually, the full moon itself arrives two days later on September 27. The last time the two fell this far apart was 2017, and it will not happen again until 2043, according to the National Astronomical Observatory of Japan.
What happens
Five screenings run through the evening, presented live by the planetarium’s own commentators on the theme of the harvest moon. No English-language version is advertised, so expect the commentary to be in Japanese. The visuals carry it either way.
| Screening | Length | Price | Rooftop viewing |
|---|---|---|---|
| 5 p.m. | 30 min | ¥1,000 general, ¥500 elementary and junior-high students | Not included |
| 6 p.m., 7 p.m., 8 p.m., 9 p.m. | 40 min | ¥1,500 flat | Included |
The rooftop session runs for roughly 30 minutes after each of the four later screenings, and depends on the weather. Seating in the dome is unreserved for every screening.
Tickets
Online sales open at midnight on September 12 and close 30 minutes before each screening.
Ticket machines at the venue also open on September 12, from noon. They run from the building’s opening time until 7 p.m., which on the night itself means a window of 2:30 to 7 p.m. So if you want the 8 p.m. or 9 p.m. screening and have not booked online, get there before seven.
Worth knowing if the site says sold out: any unsold web tickets are moved across to the machines 30 minutes before each screening.
Getting there
The planetarium is on the 12th floor of the Shibuya Cultural Center Owada, about a 5-minute walk from Shibuya Station. The building opens at 2:30 p.m. on the day.
Organizers may cancel events, alter schedules, or change admission requirements without notice. Always check official sites before heading to an event.
