Goyang-si
Gyeonggi-do, South Korea
Today
Feb 21, 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
7:14 AM
Golden: 52min
Sunset
6:17 PM
Golden: 52min
True Darkness
7:45 PM
Stars visible
Add to Calendar
Get reminders for golden hour and dark sky windows
Morning Golden Hour
6:57 AM - 7:49 AM
Evening Golden Hour
5:41 PM - 6:34 PM
Dark Sky Window
7:45 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
8
Class 1
DarkClass 5
SuburbanClass 9
City
DarkClass 5
SuburbanClass 9
City
Goyang-si 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
26%
Ideal scattered clouds for vibrant sunset colors
Morning
0%
Evening
84%
Overnight
40%
Precipitation
6%
Very unlikely
Wind
28
km/h avg
Gusts up to 55 km/h
🔴 Windy - Challenging conditions
Humidity
68%
Moderate
Visibility
23.3
km
Excellent clarity
Temperature
15°C
High
/
4°C
Low
Seeing
4
/ 5
Excellent - Atmospheric stability
Transparency
1
/ 5
Hazy - Air clarity
Conditions Summary
🌫️ Hazy conditions - Bright objects only, consider light pollution filters
Nearby Dark Sky Locations
Within 100km
Paech’ŏn-ŭp
Bortle
8
3
Dramatic improvement
60km·~45min
Yŏnan-ŭp
Bortle
8
3
Dramatic improvement
65.6km·~49min
Pongch’ŏn-ŭp
Bortle
8
3
Dramatic improvement
75.9km·~57min
💡 These locations have significantly darker skies (8 → 3). Expect 32x more visible stars.
Better Conditions Nearby Tonight
Clearer Skies
⚠️ Conditions in Goyang-si are suboptimal tonight
Consider driving to one of these locations for better viewing
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