Dark Sky Odds

Stargazing at Nossentiner/Schwinzer Heath Nature Park: when is the sky clear and dark?

March is the best month for stargazing at Nossentiner/Schwinzer Heath Nature Park: on average 32 clear, moonless hours of full darkness, and 21% of nights have at least two of them (ERA5, 2006–2025). The darkest spot we found there is darker than 81% 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

International Dark Sky Park · Germany · DarkSky International

MarchBest month
204Clear moonless dark hours a year
81%darker than … of Europe’s land
21%Nights with ≥ 2 such hours (March)

Month by month

MonthNights with ≥ 2 such hoursClear moonless dark hoursMoonless dark hoursOf them clear
January12%1918710%
February16%2014414%
March21%3212626%
April18%227828%
May5%51338%
June0%00—
July0%01—
August13%156324%
September22%3111227%
October18%2815218%
November13%1816811%
December8%141878%

No astronomical darkness (June): 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 than81% of Europe’s land
Light pollutionvery dark (darkest 5–20 %)
Sky-glow index (own, VIIRS) — Darkest spot we found0.60
Sky-glow index (own, VIIRS) — at the official map point1.17
Sky-glow index (own, VIIRS) — median across the area0.93
Darkest spot we found53.575, 12.208 (map) — within 11 km of the Wikidata point (no OSM boundary)

Next new moons

New moonNightMoonless dark hours that nightTypical share of good nights that month
9 November 20268–9 November 202611.013%
9 December 20268–9 December 202612.08%
7 January 20277–8 January 202712.012%
6 February 20276–7 February 202710.716%
8 March 20277–8 March 20278.821%
6 April 20276–7 April 20276.318%
6 May 20275–6 May 20272.75%
4 June 20274–5 June 20270.00%
4 July 20273–4 July 20270.00%
2 August 20271–2 August 20271.313%
31 August 202731 August 2027 – 1 September 20275.813%
30 September 202729–30 September 20278.322%

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 202620%55%6.858°
Geminids *13–14 December 202617%20%11.069°
Geminids *14–15 December 202615%28%9.769°
Quadrantids3–4 January 202722%13%12.773°
Lyrids22–23 April 202748%95%1.368°
Eta Aquariids *5–6 May 202745%0%5.37°
Eta Aquariids *6–7 May 202750%0%5.37°
Perseids *12–13 August 202735%84%3.366°
Perseids *13–14 August 202727%90%2.267°
Orionids21–22 October 202728%58%2.852°
Leonids *17–18 November 202720%82%1.358°
Leonids *18–19 November 202718%73%2.758°
Geminids14–15 December 202715%98%0.069°

* 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