Is tonight good for stargazing in Ōta?

Netflix & Chill Night (Too Cloudy). A 14% illuminated waxing gibbous drowns out all but the very brightest objects. The First Light Index is 19/100, with 1% cloud cover and moon illumination at 14%.

What is the light pollution level in Ōta?

Ōta has a Bortle 9 rating. This is a bright sky area where only the brightest stars and planets are visible. Consider traveling to a darker location for deep sky observation.

When is golden hour in Ōta today?

Morning golden hour is from 6:04 AM to 6:55 AM. Evening golden hour is from 4:53 PM to 5:44 PM. The Shutter Score for photography is 48/100.

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Ōta

Tokyo, Japan

Today

Feb 21, 2026

Poor

Netflix & Chill Night (Too Cloudy)

A 14% illuminated waxing gibbous drowns out all but the very brightest objects.

Tonight's Forecast

/ 100

First Light Index

Poor

Our proprietary metric combining sky clarity, moon interference, and light pollution for optimal stargazing conditions.

/ 100

Shutter Score

Fair

Photography-specific metric factoring cloud quality and golden hour potential for landscape shooters.

Light Windows Today

4 AM12 PM11 PM

Sunrise

6:20 AM

Golden: 51min

Sunset

5:28 PM

Golden: 51min

True Darkness

6:53 PM

Stars visible

Add to Calendar

Get reminders for golden hour and dark sky windows

Morning Golden Hour

6:04 AM - 6:55 AM

Evening Golden Hour

4:53 PM - 5:44 PM

Dark Sky Window

6:53 PM onwards

📱 How to use:

1. Download the .ics file above
2. Open it with your calendar app (iPhone Calendar, Google Calendar, Outlook)
3. Events will be added automatically
4. You'll get 30-minute reminders before each window

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Moon Phase

14%

Phase

Waxing Gibbous

Illumination

14%

💡 Slight Moon Interference

Moon may affect darkest sky observations

Light Pollution

Class 1
DarkClass 5
SuburbanClass 9
City

Ōta Classification

Poor for Astronomy

Bortle Class 9: Inner City Sky

Inner city sky

Visible Tonight

Entire sky brightly lit, only Moon, planets, and brightest stars visible

💡 Urban Sky Recommendation

Focus on lunar and planetary observation. Consider driving to a darker location for deep sky work.

💡 Tip: Check "Nearby Dark Sky" section below to find better observing sites within driving distance

Weather Conditions

Cloud Cover

Ideal scattered clouds for vibrant sunset colors

Morning

Evening

Overnight

Precipitation

Very unlikely

Wind

km/h avg

Gusts up to 28 km/h

🟡 Breezy - May affect tracking

Humidity

62%

Moderate

Visibility

24.1

Excellent clarity

Temperature

15°C

High

3°C

Low

Seeing

/ 5

Excellent - Atmospheric stability

Transparency

/ 5

Moderate - Air clarity

Conditions Summary

🌫️ Hazy conditions - Bright objects only, consider light pollution filters

Nearby Dark Sky Locations

Within 100km

Aizu-misato Machi

Bortle

Dramatic improvement

205.2km·~2h 34min

Kumano

Bortle

Dramatic improvement

377km·~4h 43min

💡 These locations have significantly darker skies (9 → 3). Expect 64x more visible stars.

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