Dark Sky Odds

Stargazing at National Park of Eastern Macedonia and Thrace: when is the sky clear and dark?

August is the best month for stargazing at National Park of Eastern Macedonia and Thrace: on average 84 clear, moonless hours of full darkness, and 56% of nights have at least two of them (ERA5, 2006–2025). The darkest spot we found there is darker than 52% 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 · Greece

AugustBest month
623Clear moonless dark hours a year
52%darker than … of Europe’s land
56%Nights with ≥ 2 such hours (August)

Month by month

MonthNights with ≥ 2 such hoursClear moonless dark hoursMoonless dark hoursOf them clear
January26%4618126%
February26%3614225%
March28%4414032%
April30%4311338%
May26%318835%
June34%366952%
July55%718781%
August56%8410878%
September43%6913053%
October35%6015539%
November32%5516832%
December27%4818027%

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 than52% of Europe’s land
Light pollutiondark rural sky (darkest 20–50 %)
Sky-glow index (own, VIIRS) — Darkest spot we found3.27
Sky-glow index (own, VIIRS) — at the official map point22
Sky-glow index (own, VIIRS) — median across the area16
Darkest spot we found40.942, 25.258 (map) — within 15 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 202610.732%
9 December 20268–9 December 202611.527%
7 January 20277–8 January 202711.326%
6 February 20276–7 February 202710.726%
8 March 20277–8 March 20279.528%
6 April 20276–7 April 20277.830%
6 May 20276–7 May 20276.326%
4 June 20274–5 June 20274.834%
4 July 20273–4 July 20274.755%
2 August 20271–2 August 20276.056%
31 August 202731 August 2027 – 1 September 20277.556%
30 September 202729–30 September 20279.243%

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 202652%54%6.269°
Geminids *13–14 December 202638%20%9.882°
Geminids *14–15 December 202638%28%8.882°
Quadrantids3–4 January 202740%13%11.065°
Lyrids22–23 April 202750%96%1.283°
Eta Aquariids *5–6 May 202752%0%7.722°
Eta Aquariids *6–7 May 202757%0%7.723°
Perseids *12–13 August 202797%84%3.266°
Perseids *13–14 August 202798%90%2.266°
Orionids21–22 October 202758%59%3.565°
Leonids *17–18 November 202752%83%1.869°
Leonids *18–19 November 202748%73%3.270°
Geminids14–15 December 202738%98%0.082°

* 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