Dark Sky Odds

Stargazing at Malá Fatra National Park: when is the sky clear and dark?

March is the best month for stargazing at Malá Fatra National Park: on average 33 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 56% 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 · Slovakia

MarchBest month
235Clear moonless dark hours a year
56%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
January12%2017711%
February12%1814712%
March22%3313325%
April21%269427%
May13%125124%
June0%0315%
July6%83323%
August20%258530%
September20%3011825%
October18%3215520%
November10%151749%
December11%171899%

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 than56% of Europe’s land
Light pollutiondark rural sky (darkest 20–50 %)
Sky-glow index (own, VIIRS) — Darkest spot we found2.78
Sky-glow index (own, VIIRS) — at the official map point3.15
Sky-glow index (own, VIIRS) — median across the area4.51
Darkest spot we found49.225, 19.142 (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 202610.810%
9 December 20268–9 December 202611.711%
7 January 20277–8 January 202711.812%
6 February 20276–7 February 202710.712%
8 March 20277–8 March 20279.022%
6 April 20276–7 April 20277.021%
6 May 20276–7 May 20274.513%
4 June 20274–5 June 20271.00%
4 July 20273–4 July 20270.06%
2 August 20271–2 August 20273.820%
31 August 202731 August 2027 – 1 September 20276.720%
30 September 202729–30 September 20278.720%

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 202612%55%6.762°
Geminids *13–14 December 202613%20%10.574°
Geminids *14–15 December 202613%28%9.374°
Quadrantids3–4 January 202710%13%12.072°
Lyrids22–23 April 202747%95%1.374°
Eta Aquariids *5–6 May 202727%0%6.514°
Eta Aquariids *6–7 May 202727%0%6.213°
Perseids *12–13 August 202745%84%3.268°
Perseids *13–14 August 202742%90%2.268°
Orionids21–22 October 202732%59%3.057°
Leonids *17–18 November 202712%82%1.562°
Leonids *18–19 November 202710%73%2.862°
Geminids14–15 December 202713%98%0.074°

* 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