Nanjing
Jiangsu, China
Today
Feb 26, 2026
Forecast For
Feb 25, 2026
0
/ 100
First Light Index
Poor
Our proprietary metric combining sky clarity, moon interference, and light pollution for optimal stargazing conditions.
0
/ 100
Shutter Score
Poor
Photography-specific metric factoring cloud quality and golden hour potential for landscape shooters.
Light Windows Today
4 AM12 PM11 PM
Sunrise
6:36 AM
Golden: 48min
Sunset
5:59 PM
Golden: 48min
True Darkness
7:20 PM
Stars visible
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Morning Golden Hour
6:21 AM - 7:09 AM
Evening Golden Hour
5:26 PM - 6:14 PM
Dark Sky Window
7:20 PM onwards
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- 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
56%
Phase
First Quarter
Illumination
56%
⚠️ High Moon Interference
Bright moonlight will wash out faint deep sky objects
Light Pollution
8
Class 1
DarkClass 5
SuburbanClass 9
City
DarkClass 5
SuburbanClass 9
City
Nanjing Classification
Poor for Astronomy
Bortle Class 8: City Sky
City sky
Visible Tonight
Sky glows whitish gray, only brightest stars visible, M44 invisible
💡 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
84%
Heavy clouds - limited visibility and light
Morning
80%
Evening
100%
Overnight
90%
Precipitation
0%
Very unlikely
Wind
14
km/h avg
Gusts up to 27 km/h
🟡 Breezy - May affect tracking
Humidity
69%
Moderate
Visibility
24.1
km
Excellent clarity
Temperature
15°C
High
/
5°C
Low
Seeing
2
/ 5
Fair - Atmospheric stability
Transparency
1
/ 5
Hazy - Air clarity
Conditions Summary
🌪️ Poor seeing - Stick to wide-field imaging or wait for better atmospheric stability
Nearby Dark Sky Locations
Within 100km
Wuyang
Bortle
8
3
Dramatic improvement
239.2km·~2h 59min
Biyang
Bortle
8
3
Dramatic improvement
249.4km·~3h 7min
Qishan
Bortle
8
3
Dramatic improvement
265.8km·~3h 19min
💡 These locations have significantly darker skies (8 → 3). Expect 32x more visible stars.
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