Stargazing guide
Stargazing in Long Bien, Hanoi, Vietnam
Long Bien, Hanoi, Vietnam has an estimated Bortle 5–6 sky (mid-sized city). The Milky Way core is highest after dark in April, at about 40°.
How dark the sky is around Long Bien, Hanoi, Vietnam, the nearest certified dark-sky places, when the Milky Way core is visible, and the next dark New Moon. Calculated for 21.03°, 105.90°.
Estimated sky glow
Milky Way core
Next New Moon
Dark-sky rating for Long Bien
Long Bien, Hanoi, Vietnam is a mid-sized city (population about 347,829). A place this size typically has a bright suburban sky: main constellations are easy, the Milky Way is washed out. That is an estimate of Bortle class 5–6 from population, not a measurement: the real value depends on the exact spot you observe from.
For a measured reading at any point, open the live Dark Sky map.
Nearest dark-sky places and observatories
No certified dark-sky place or observatory in our registry lies within 150 km of Long Bien. Our list only includes genuine, publicly documented sites, so none is shown rather than guessed.
Milky Way season in Long Bien
The bright core of the Milky Way climbs high above the horizon haze. It climbs at least 20° above the horizon during astronomical darkness in February, March, April, May, June, July, August, September, October, peaking in April at about 40°.
- The north celestial pole stands 21° above the horizon, so stars within 21° of it never set from here.
- About 67.9% of the whole sky rises above the horizon at some point in the year from this latitude.
- The Milky Way's core in Sagittarius culminates about 40° up, clearing the horizon haze comfortably.
- At 10 m elevation, roughly 0% of the atmosphere's mass is already below you, which measurably reduces extinction near the horizon.
Tonight and aurora
As of November 6, 2026 (UTC) the Moon is a Waning Crescent at 8% illumination. Aurora at 21.0° latitude generally needs about Kp 9.0.
Nearby places
Stargazing in Long Bien: common questions
Is Long Bien a good place for stargazing?
Long Bien, Hanoi, Vietnam is a mid-sized city, so its typical sky is bright suburban sky: main constellations are easy, the Milky Way is washed out (an estimate of Bortle 5–6 from population, not a measurement). No certified dark-sky place or observatory in our registry lies within 150 km, so a dark site means driving away from the city's glow toward the darkest horizon you can reach.
When can you see the Milky Way from Long Bien?
From Long Bien, Hanoi, Vietnam (21.03°, 105.90°) the Milky Way's bright core climbs at least 20° above the horizon during astronomical darkness in February, March, April, May, June, July, August, September, October. It peaks in April, reaching about 40°. Moonlight, cloud and city lights still decide what you actually see.
What is the best night this month for stargazing near Long Bien?
The darkest nights fall around the New Moon. As of 2026-11-06 the Moon is a Waning Crescent at 8% illumination, and the next New Moon is November 9, 2026 (UTC). Pair it with a clear forecast and a site away from town lights.