Tokyo, Japan

Sunday, August 11, 2024

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Tokyo, Japan

Meteor shower

Perseids

Best around 2:35 AM

Very LowExcellent
8:05 PM Dark enough
9:45 PM Moonset
2:35 AM Best
3:28 AM Too light
Estimate
~77/hour
from a dark spot here
Radiant climbs to
54°
Under a perfect sky
100/hour
Moonlight
No interference
Speed
59 km/s

Where they come from: Comet Swift-Tuttle (109P/Swift-Tuttle)

Dust from Comet Swift-Tuttle, which takes 133 years to go round the Sun and was last here in 1992. At 26 km across it is the largest object known to pass this close to Earth again and again.

The estimate is how many you might really see from a dark spot here, allowing for how high the shower climbs and for moonlight. "Under a perfect sky" is the best case. The bar also counts the forecast cloud at the best time, so a clouded-out night sits at the bottom, as does rain on the radar now.

The most dependable shower of the year, on warm summer nights in the north.

That morning

Sunrise

4:57 AM

4:57 AM

Clears the hills at 5:04 AM, 7 min after sunrise

4:29 AM Blue hour
4:57 AM Sunrise
5:32 AM Golden hour ends

Milky Way

Milky Way

Washed out by city light

Visible from 9:50 PM

Very LowExcellent
Visible, no moon
9:50 PM to 11:40 PM
Where to look
South-southwestern horizon, up to 21° above it
Highest at
9:50 PM
Sky fully dark
8:10 PM to 3:23 AM
Sky darkness
None
Cloud
Not forecast yet

The bright center of the Milky Way: when it is above the horizon with the sky fully dark and the Moon set, brought down for how dark the sky is here (estimated from the towns around by Walker's law) and for cloud where the forecast reaches.

Event

Mountain Day

Japanese holiday

Mountain Day in Tokyo - sunset at 6:36 PM

Evening from 6:36 PM

Sunset and evening sky: not known yet

Sunset
6:36 PM
Sun toward S
Cloud this evening
Not known yet
Rain chance
Not known yet
This evening
Moon
29% lit
Up from the start
Where the Sun is
S, 69° up
at 11:51 AM

Mountain Day, August 11, is the newest of Japan's holidays, first kept in 2016: a day to get close to the mountains and be grateful for them. Nearly three quarters of Japan is mountains.

Sunset

6:35 PM

6:35 PM

Behind the hills at 6:31 PM, 4 min before sunset

Too far ahead for a weather forecast. These are the sun's own times - they will not change.

6:00 PM Golden hour
6:35 PM Sunset
7:02 PM Blue hour ends

Moon

Waxing crescent

36% lit

10:58 AM – 9:45 PM

ESE WSW
10:58 AM Moonrise
11:19 AM 4°
4:22 PM Highest, 39°
9:24 PM 4°
9:45 PM Moonset

Between the two 4° marks the Moon is clear of haze and most of what stands on the horizon.

Timetable

  • Morning blue hour 4:29 AM–4:57 AM
  • Sunrise 4:57 AM
  • Morning golden hour 4:57 AM–5:32 AM
  • Morning best color 5:22 AM
  • Moonrise 10:58 AM
  • Evening golden hour 6:00 PM–6:35 PM
  • Evening best color 6:10 PM
  • Sunset 6:35 PM
  • Evening blue hour 6:35 PM–7:02 PM
  • Fully dark 8:10 PM–3:23 AM
  • Moonset 9:45 PM
  • Dark, no Moon 9:50 PM–3:23 AM

Upcoming celestial events for Tokyo, Japan

Southern Taurids A few an hour
Thu 5 Nov 2026 6:12 PM Northern Taurids Still active, a few an hour
Thu 5 Nov 2026 6:12 PM New moon Moonless and fully dark 6:10 PM to 4:40 AM Mon 9 Nov 2026 4:01 PM Mir | Demo Flight Long shot, look W
Tue 10 Nov 2026 3:00 PM Northern Taurids A few an hour
Thu 12 Nov 2026 6:06 PM Leonids Around 11 an hour
Tue 17 Nov 2026 6:03 PM Partial lunar eclipse 38% of the Moon in shadow
Thu 6 Jul 2028 3:20 AM Total lunar eclipse Totality lasts 71 minutes
Sun 31 Dec 2028 1:51 AM Partial solar eclipse 72.6% of the Sun covered
Sat 1 Jun 2030 5:07 PM Partial lunar eclipse 93% of it above your horizon
Sat 15 Jun 2030 3:33 AM Total lunar eclipse Totality lasts 66 minutes
Sun 25 Apr 2032 12:13 AM Total lunar eclipse Totality lasts 46 minutes
Mon 18 Oct 2032 4:03 AM Partial solar eclipse 39.5% of the Sun covered
Wed 3 Nov 2032 3:35 PM Total lunar eclipse 81% of it above your horizon
Thu 14 Apr 2033 4:12 AM Total lunar eclipse Totality lasts 78 minutes
Sat 8 Oct 2033 7:55 PM Partial solar eclipse Totality here
Sun 2 Sep 2035 10:09 AM Partial solar eclipse 86.5% of the Sun covered
Sun 20 Apr 2042 11:35 AM

Every celestial event, and where else to see it