Home/Calculators/Vietnam on Aletheia

Da Nang

Da Nang City, Vietnam
Today
Mar 21, 2026
Poor

Netflix & Chill Night (Too Cloudy)

A 5% illuminated waxing gibbous drowns out all but the very brightest objects.

Tonight's Forecast
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

Blue HourGolden HourGolden HourBlue Hour
4 AM12 PM11 PM
Sunrise
5:50 AM
Golden: 42min
Sunset
5:58 PM
Golden: 42min
True Darkness
7:09 PM
Stars visible

Add to Calendar

Get reminders for golden hour and dark sky windows

Morning Golden Hour
5:36 AM - 6:18 AM
Evening Golden Hour
5:29 PM - 6:11 PM
Dark Sky Window
7:09 PM onwards
📱 How to use:
  1. 1. Download the .ics file above
  2. 2. Open it with your calendar app (iPhone Calendar, Google Calendar, Outlook)
  3. 3. Events will be added automatically
  4. 4. You'll get 30-minute reminders before each window
30-min reminders
All calendar apps
Timezone aware
No sign-up needed

Moon Phase

5%
Phase
Waxing Gibbous
Illumination
5%
💡 Slight Moon Interference
Moon may affect darkest sky observations

Light Pollution

7
Class 1
DarkClass 5
SuburbanClass 9
City
Da Nang Classification
Moderate for Astronomy
Bortle Class 7: Suburban/Urban Transition

Suburban/urban transition

Visible Tonight

Entire sky grayish, strong light sources visible, M31 difficult

💡 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
63%
Heavy clouds - limited visibility and light
Morning
81%
Evening
74%
Overnight
55%
Precipitation
0%
Very unlikely
Wind
15
km/h avg
Gusts up to 41 km/h
🟡 Breezy - May affect tracking
Humidity
84%
High - May cause haze
Visibility
24.1
km
Excellent clarity
Temperature
28°C
High
/
19°C
Low
Seeing
3
/ 5
Good - 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

Bà Nà

Bortle
7
3
Dramatic improvement
27.1km·~20min

Phong Điền

Bortle
7
3
Dramatic improvement
107.8km·~1h 21min

Cam Lộ

Bortle
7
3
Dramatic improvement
154.5km·~1h 56min
💡 These locations have significantly darker skies (7 → 3). Expect 16x more visible stars.

Need to calculate camera settings?

Use our free calculators for shutter speed, hyperfocal distance, and field of view

Open Calculators