Geminids from Istanbul in 2026

Geminids from Istanbul: the short answer

Maximum for the Geminids in 2026 is 16:41 Istanbul time on 14 December 2026. From 41.0°N the radiant gets to 81.2° at 03:07, the Moon is 28% lit, and this city's measured-sky ceiling is 13.6 meteors an hour.

That makes the Geminids the strongest of the twelve annual showers from Istanbul in 2026, ahead of the Perseids at 11.8 an hour.

The radiant track over this city

At 41.0°N a declination-+32.3° radiant traces an arc from 18:54 to 11:20, topping out at 81.2° at 03:07 bearing 180°. Inside the dark window it only manages 81.0°, and that lower figure is the one the rates are built from. The radiant currently lies in Gemini.

When it gets dark here

Istanbul loses the Sun at 17:36 and gets it back at 08:21. True astronomical darkness — the only part that counts for faint meteors — runs 19:15 to 06:42, 11 h 27 min out of 14 h 45 min of night.

Local solar midnight, the true middle of the night, falls at 00:58 here rather than at 00:00: Europe/Istanbul runs 64 minutes ahead of mean solar time at 28.95°E. That offset is why the best hour on this page is not the hour you would guess from the clock.

What the Moon does here

The Moon is 28% lit and out of the way for 9 of the 13 sampled dark hours. Moonset 22:34. At the best hour it is 47.0° below the horizon, and the limiting magnitude works out at 4.00.

Why 14 an hour and not 150

Converting ZHR 150 into something useful for Istanbul means multiplying by sin(81.0°) and dividing by 2.6 raised to (6.5 − 4.00). That lands at 13.6 meteors an hour, from medium-speed 33.8 km/s entries.

Hour by hour the modelled rate runs from 0.1 at 19:00 (radiant 0.7°) to 3.5 at 07:00 (radiant 43.4°), peaking at 13.6. That spread across 13 hours is why a "what time" answer beats a "how many" answer.

The stream comes from Minor planet (3200) Phaethon and is listed as active 4 December to 20 December, so 14 December 2026 is the best night from Istanbul rather than the only one.

Watching from around Istanbul

Istanbul is the 6th largest of the 300 cities covered here, with a population of 15.70 million at 39 m above sea level. The nearest other cities on the site are Bursa (91 km S), İzmir (328 km SSW), Ankara (352 km ESE) — close enough that the radiant altitudes barely change, far enough that sunset and moonrise do.

What this page does not know

Rates on this page are computed against this city's own measured sky brightness, derived from satellite night-lights data. That is a calculated brightness for the point directly overhead, not a survey of your street: a park on the edge of town and a lit car park in the centre share the same figure here and will not look the same. It is also zenith-only, while the Bortle scale describes the whole sky from horizon to horizon.

Cloud cover is a forecast, not a constant, so it is resolved when you load the tonight card and is deliberately absent from this prerendered page — the hourly table shows "unavailable" rather than assuming clear skies. Meteor outbursts, local terrain and building horizons are not modelled.

A single observer with an unobstructed horizon typically records 30–50% below the ideal-sky figure. Give your eyes twenty minutes to adapt, keep bright screens away, look about halfway up the sky rather than straight at the radiant, and count for a full hour before judging a shower.