Stargazing in Arakawa tonight

Japan · 35.74°, 139.78°

Stargazing verdict · tonight

Fair

Fair — stars visible, but not the best conditions.

›A bright first quarter (55% lit) will wash out fainter stars.
›About 8 hours of true darkness to work with.

Your sky map — scrub through time

A live map of the sky above Arakawa: the Moon, planets, bright stars and constellations, exactly where they are. Drag the sliders to move through the night — or forward and back by days — and watch everything shift.

The sky over Arakawa

Thu 20 Aug, 22:00 · looking up — N at top, E to the left

Day

Time of night22:00

Drag the sliders to travel through time — watch the Moon, planets and constellations rise, set and shift. Positions are computed live for Arakawa.

Tonight's sky in Arakawa

🌓 Moon

First Quarter

55% lit

🌑 Darkness

19:57–03:31

8h of dark

🌇 Sun

sets 18:24

rises 05:04

🌙 Moon rise/set

up 12:40

down 22:20

Planets visible tonight

♂ Mars

Best early hours · toward the E · 29° up

♄ Saturn

Best early hours · toward the SW · 55° up

Best nights to stargaze — next two weeks

Ranked by how dark the sky will be (less Moon = better). Pair with a clear-sky forecast on the night.

Thu 20 Aug

20 Aug

55% moon

Fri 21 Aug

21 Aug

64% moon

Sat 22 Aug

22 Aug

73% moon

Sun 23 Aug

23 Aug

81% moon

Mon 24 Aug

24 Aug

88% moon

Tue 25 Aug

25 Aug

93% moon

Wed 26 Aug

26 Aug

97% moon

Thu 27 Aug

27 Aug

100% moon

Fri 28 Aug

28 Aug

100% moon

Sat 29 Aug

29 Aug

98% moon

Sun 30 Aug

30 Aug

94% moon

Mon 31 Aug

31 Aug

87% moon

Tue 1 Sept

1 Sept

79% moon

Wed 2 Sept

2 Sept

69% moon

Upcoming sky events from Arakawa

28 August

Partial lunar eclipse

A partial lunar eclipse on 28 August, with part of the full Moon dimming and reddening as it enters Earth's shadow. Visible from the Americas, Europe, Africa and Asia depending on your local moonrise/moonset.

4 October

Saturn at opposition

Saturn reaches opposition on 4 October — directly opposite the Sun, so it rises at sunset, sets at sunrise and is at its biggest and brightest of the year. The best night to catch the rings through even a small telescope.

26 September · lesser-known

Neptune at opposition

The most distant planet reaches opposition on 26 September — its brightest for the year, though still faint. A rewarding challenge target: Neptune shows as a tiny blue-grey disc through a telescope. One for the keen.

14 December

Geminid meteor shower

Widely considered the best shower of the year: slow, bright, often colourful meteors at up to ~150 per hour under dark skies. In 2026 the Moon is only a young crescent at the 13–14 December peak, so conditions are excellent.

21 October · lesser-known

Orionid meteor shower

Fast, faint meteors — debris from Halley's Comet — peaking around 21 October at ~20 per hour. A quieter, connoisseur's shower; moonlight hampers the 2026 peak, so aim for the darkest hours.

Moon phase for Arakawa →All sky events

Stargazing in Arakawa — FAQ

Is tonight good for stargazing in Arakawa?

Fair — stars visible, but not the best conditions. A bright first quarter (55% lit) will wash out fainter stars. Check the live cloud forecast above, which updates through the day.

What planets are visible from Arakawa tonight?

Tonight you can spot Mars, Saturn above the horizon from Arakawa, conditions permitting.

When is the best night to stargaze in Arakawa soon?

The darkest upcoming night is around Thu 20 Aug, when the Moon is only 55% lit.

Times are local to Arakawa (Asia/Tokyo). Astronomical data is computed from established models; the cloud forecast is live from Open-Meteo and refreshes through the day. Always confirm with a live forecast before travelling to a dark-sky site.