Diamond Fuji at Tokyo Metropolitan Government Building
Short answer: Next Diamond Fuji from Tokyo Metropolitan Government Building: Mon 9 November 2026 at 16:29 (sunset). In the next 12 months: 9 November 2026 (16:29), 10 November 2026 (16:28), 11 November 2026 (16:27), 31 January 2027 (16:56), 1 February 2027 (16:58).
The free observatories of the Tokyo Metropolitan Government Building in Shinjuku look 95 km west to Fuji. Twice a year the sun sets behind the summit.
Sat 7 November 2026 · summit at 247.5° bearing, 1.77° up, 95 km away
Close
The sun sets 1.1° to the right of the summit at 16:30; not a Diamond Fuji day. Next Diamond Fuji from here: Mon 9 November 2026 at 16:29.
Moonset over Fuji at 15:04, 5.4° to the right of the summit (moon 4% lit).
Diamond Fuji days (next 12 months)
| Date | Time | Position |
|---|---|---|
| Sun 8 Nov 2026 | 16:29 sunset | 0.7° to the right of the summit |
| Mon 9 Nov 2026 | 16:29 sunset | On the summit |
| Tue 10 Nov 2026 | 16:28 sunset | On the summit |
| Wed 11 Nov 2026 | 16:27 sunset | On the summit |
| Thu 12 Nov 2026 | 16:26 sunset | 0.7° to the left of the summit |
| Sat 30 Jan 2027 | 16:55 sunset | 0.6° to the left of the summit |
| Sun 31 Jan 2027 | 16:56 sunset | On the summit |
| Mon 1 Feb 2027 | 16:58 sunset | On the summit |
| Tue 2 Feb 2027 | 16:59 sunset | 0.4° to the right of the summit |
Pearl Fuji: the moon on the summit
| Date | Time | Position | Moon lit |
|---|---|---|---|
| Fri 29 Jan 2027 | 10:04 moonset | 0.4° to the left of the summit | 55% |
| Wed 21 Apr 2027 | 04:34 moonset | 0.6° to the right of the summit | 100% |
| Wed 23 Jun 2027 | 07:46 moonset | On the summit (Pearl Fuji) | 86% |
| Mon 13 Sep 2027 | 02:17 moonset | On the summit (Pearl Fuji) | 90% |
Plan it
Entry is free; use the south observatory side. Fuji is only visible on clear days, most often from November to February.
Questions
When is Diamond Fuji at Tokyo Metropolitan Government Building?
Next Diamond Fuji from Tokyo Metropolitan Government Building: Mon 9 November 2026 at 16:29 (sunset). In the next 12 months: 9 November 2026 (16:29), 10 November 2026 (16:28), 11 November 2026 (16:27), 31 January 2027 (16:56), 1 February 2027 (16:58). The sun is close to the summit for a day or two either side; see the full table.
What time does Diamond Fuji happen at Tokyo Metropolitan Government Building?
It is a sunset event: the sun sets onto the summit, a little before the official sunset because the mountain is higher than the horizon. On 9 November 2026 it is at 16:29.
When is Pearl Fuji at Tokyo Metropolitan Government Building?
With a moon at least half lit on the summit: 23 June 2027 (07:46, 86% lit), 13 September 2027 (02:17, 90% lit).
What are the chances of seeing it?
Fuji has to be clear of cloud on the horizon side. Winter mornings and evenings are clearest; from June to August Fuji is hidden more often than not. See our clear-view odds for Mount Fuji.
How do you calculate it?
For each spot we work out the direction of Fuji's summit and how high it appears above the horizon, allowing for the curve of the Earth and normal refraction. Then, for every day, we find the moment the sun (or moon) sinks to, or rises from, that height and measure how far left or right of the summit it is. Within about 0.4° the sun's disc sits on the summit: that is a Diamond Fuji. Pearl Fuji is the same with a moon at least half lit.
Summit bearing 247.5°, apparent height 1.77°, distance 95 km. Times are Japan time. Moving a few hundred metres along the shore shifts the best day by a day or so.