Dark Sky Odds

Stargazing at Mols Bjerge National Park: when is the sky clear and dark?

March is the best month for stargazing at Mols Bjerge National Park: on average 31 clear, moonless hours of full darkness, and 22% of nights have at least two of them (ERA5, 2006–2025). The darkest spot we found there is darker than 77% of Europe’s land (NASA VIIRS 2025).

Data updated: 31 December 2025 · Sources and licences

Calculated 5 November 2026 · cloud cover ERA5 2006–2025 · night lights NASA VIIRS 2025

national park · Denmark

MarchBest month
181Clear moonless dark hours a year
77%darker than … of Europe’s land
22%Nights with ≥ 2 such hours (March)

Month by month

MonthNights with ≥ 2 such hoursClear moonless dark hoursMoonless dark hoursOf them clear
January13%2018910%
February14%1914413%
March22%3112126%
April19%206531%
May0%01—
June0%00—
July0%00—
August9%104124%
September18%2310522%
October15%2315215%
November12%1917111%
December11%161898%

No astronomical darkness (June, July): the Sun stays above −18° all night.

Climate, not a forecast: these are shares of past nights (ERA5 reanalysis, 2006–2025), not a prediction for a particular night. Check a forecast before you go.

Light pollution

Darker than77% of Europe’s land
Light pollutiondark rural sky (darkest 20–50 %)
Sky-glow index (own, VIIRS) — Darkest spot we found0.77
Sky-glow index (own, VIIRS) — at the official map point2.99
Sky-glow index (own, VIIRS) — median across the area2.24
Darkest spot we found56.258, 10.808 (map) — within the OSM boundary

Next new moons

New moonNightMoonless dark hours that nightTypical share of good nights that month
9 November 20268–9 November 202611.012%
9 December 20268–9 December 202612.211%
7 January 20277–8 January 202712.213%
6 February 20276–7 February 202710.814%
8 March 20277–8 March 20278.722%
6 April 20276–7 April 20275.719%
6 May 20275–6 May 20270.00%
4 June 20274–5 June 20270.00%
4 July 20273–4 July 20270.00%
2 August 20271–2 August 20270.09%
31 August 202731 August 2027 – 1 September 20275.29%
30 September 202729–30 September 20278.218%

Hours with the Sun below −18° and the Moon below the horizon, on the night of the new moon, at the darkest spot.

Meteor showers

ShowerPeak nightChance of a clear peak nightMoon litMoonless dark hours (Sun < −12°)Radiant max. height
Leonids17–18 November 202623%55%7.256°
Geminids *13–14 December 202618%20%11.367°
Geminids *14–15 December 202615%28%10.067°
Quadrantids3–4 January 202738%13%13.374°
Lyrids22–23 April 202755%95%1.565°
Eta Aquariids *5–6 May 202737%0%4.53°
Eta Aquariids *6–7 May 202742%0%4.33°
Perseids *12–13 August 202733%84%3.364°
Perseids *13–14 August 202732%90%2.265°
Orionids21–22 October 202723%58%2.350°
Leonids *17–18 November 202723%82%1.056°
Leonids *18–19 November 202725%73%2.556°
Geminids14–15 December 202715%98%0.067°

* The peak falls in daylight in Europe, so both neighbouring nights are shown.

Clear peak night: at least 2 hours with ≤ 20 % cloud while the Sun is below −12°, on the same calendar night ± 1 in 2006–2025.

How we calculate