Dämmerungszeiten Auckland — Twilight Calculator · FastTool

Twilight Duration at Auckland

At Auckland's latitude of -36.9°, twilight duration varies dramatically by season. At this mid-latitude location, astronomical twilight (sun −12° to −18° below horizon) typically lasts 90–120 minutes 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 Auckland's dark-sky window so different month to month.

Auckland ist die größte Stadt im einzigen Land der Welt mit einem gesetzlich geschützten Dark-Sky-Reservat, das von einem Ballungsraum aus erreichbar ist — Great Barrier Island (Aotea), 30 Flugminuten vom Stadtzentrum entfernt, wurde 2017 zur weltweit ersten Dark-Sky-Sanctuary-Insel mit Bortle-1-2-Himmel. Das Stardome Observatory der Auckland Astronomical Society auf dem One Tree Hill hat Generationen von Neuseeländern den Südhimmel nähergebracht.

When Does It Get Truly Dark in Auckland?

At Auckland, true astronomical darkness begins when the sun drops more than 18° below the horizon — the end of astronomical twilight. At -36.9° latitude, this dark window varies from approximately 4–6h in summer to 12–14h in winter. During the October–March months, Auckland 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 36,8°S sind Aucklands saisonale Tageslichtschwankungen das Spiegelbild der nördlichen Mittelbreiten — 14 Stunden und 40 Minuten zur Dezember-Sonnenwende gegenüber nur 9 Stunden und 40 Minuten im Juni. Diese 5-stündige Schwankung, kombiniert mit Neuseelands sauberer südlicher Ozeanluft und dem Fehlen von kontinentalem Staub, erzeugt außergewöhnlich transparente Sonnenaufgänge über dem Hauraki-Golf.

Civil, Nautical & Astronomical Twilight Explained

Three twilight phases occur each evening and morning at Auckland, 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 Auckland'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 Auckland 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 Auckland's coordinates.