Tonight from Tokyo

Tonight in Tokyo, Japan, the sun sets at 17:31 local time and astronomical darkness — when even the faintest stars become visible — arrives at 18:56. The moon is in full phase, 100% illuminated. 4 major planets are above the horizon as night falls. Sunrise comes at 05:33.

At mid-latitudes, night length varies substantially with season; summer offers shorter darkness, winter the longest. Polaris sits roughly at this latitude above the northern horizon, making it a permanent compass for navigation. The Big Dipper, Cassiopeia, and the northern circumpolar stars never set.