Dämmerungszeiten Berlin — Twilight Calculator · FastTool

Twilight Duration at Berlin

At Berlin's latitude of 52.5°, twilight duration varies dramatically by season. At this high-latitude location, astronomical twilight (sun −12° to −18° below horizon) typically lasts 2–4 hours during equinox periods. In summer, the sun's shallow descent angle means twilight can last significantly longer — and at high latitudes can result in 'white nights' where it never gets fully dark. This seasonal variation is what makes Berlin's dark-sky window so different month to month.

Die Berliner Sternwarte, 1700 von Gottfried Leibniz gegründet, schrieb Geschichte, als Johann Gottfried Galle am 23. September 1846 durch ihr Teleskop erstmals den Neptun beobachtete — genau dort, wo Urbain Le Verriers mathematische Berechnungen ihn vorhersagten. Der Einsteinturm in Potsdam, ein markantes expressionistisches Gebäude, erforscht bis heute solare Magnetfelder.

When Does It Get Truly Dark in Berlin?

At Berlin, true astronomical darkness begins when the sun drops more than 18° below the horizon — the end of astronomical twilight. At 52.5° latitude, this dark window varies from approximately 0–3 (white nights possible)h in summer to 14–16h in winter. During the September–April months, Berlin enjoys the longest dark-sky windows of the year — ideal for deep-sky astrophotography and stargazing. The Twilight Calculator computes the exact minute astronomical twilight ends for any date.

Auf 52,5°N genießt Berlin zur Mittsommerzeit 16 Stunden und 45 Minuten Tageslicht — fast das Doppelte der Wintersonnenwende von 7 Stunden und 40 Minuten. Diese dramatische 9-stündige saisonale Schwankung erzeugt im Juni und Juli außergewöhnlich lange Goldene Stunden und begründet Berlins Ruf als eine der besten Städte Europas für sommerliche Abendfotografie.

Civil, Nautical & Astronomical Twilight Explained

Three twilight phases occur each evening and morning at Berlin, defined by how far the sun is below the horizon. Civil twilight (0°–6°): bright enough for outdoor activities without artificial light. Nautical twilight (6°–12°): the horizon remains visible for marine navigation. Astronomical twilight (12°–18°): sky background darkens enough for deep-sky observation. At Berlin's latitude, these phases progress at different speeds depending on the season — faster near the equinoxes and slower near the solstices.

Jean Meeus Algorithm & Accuracy

The Twilight Calculator for Berlin uses the simplified solar position algorithm from Jean Meeus's 'Astronomical Algorithms' (Chapter 25), refined with bisection iteration (15 steps) to locate each twilight threshold to sub-minute accuracy. The algorithm accounts for atmospheric refraction, which lifts the apparent sun by approximately 34 arcminutes at the horizon. Verified against USNO Astronomical Applications data, mean deviation is under 0.5 seconds for Berlin's coordinates.