Thursday, 15 October 2026: polar night, the sun does not rise. Moon: Waxing crescent, 23% lit.
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Sun & moon · Alert
Thursday, 15 October 2026
Today · EDT · UTC−4
Polar night: the sun stays below the horizon all day.
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Night
Astronomical twilight
Nautical twilight
Blue hour
Golden hour
Daylight
Sun times
Sunrise, sunset, twilight, golden and blue hour in Alert
Astronomical dawn
None today
Nautical dawn
04:04
Civil dawn
07:14
Blue hour, morning
07:14–08:25
Golden hour, morning
08:25–11:54
Sunrise
None today
Solar noon
11:54 · 1.2° below the horizon
Sunset
None today
Golden hour, evening
11:54–15:20
Blue hour, evening
15:20–16:31
Civil dusk
16:31
Nautical dusk
19:38
Astronomical dusk
None today
Day length
0 min
Change since yesterday
44 min 0 s shorter
The Moon
Waxing crescent
23% of the disc lit
Age: 5.0 days since new moon
Moonrise
—
Moonset
—
The Moon stays below the horizon all day.
Next phases
First quarterSun 18 Oct, 12:13
Full moonMon 26 Oct, 00:12
Last quarterSun 1 Nov, 15:28
New moonMon 9 Nov, 02:02
Moon phases, October 2026
MonTueWedThuFriSatSun
How it works
Twilight, golden hour and blue hour
Twilight is named by how far the sun is below the horizon. Civil twilight lasts until it is 6° below: there is enough light to be outdoors without lamps. Nautical twilight runs to 12°, when the horizon at sea fades. Astronomical twilight ends at 18°, when the sky is fully dark. Near midsummer at higher latitudes the sun never sinks that far, and the night stays in twilight.
Golden hour is the warm, low light with the sun between 4° below and 6° above the horizon; blue hour is the deep blue just before and after it, with the sun between 6° and 4° below. Photographers use these limits, though there is no official definition, and the light you actually see depends on the weather.
How we compute it
The Sun’s position follows the NOAA solar calculator (after Meeus, Astronomical Algorithms). The Moon’s position uses the Montenbruck & Pfleger lunar series, its rise and set Meeus’s standard altitudes for the upper limb with refraction and parallax, and the principal phases Meeus’s chapter 49. Checked against the US Naval Observatory: rise, set and twilight agree within two minutes, the phases within one.
Times are for a flat, sea-level horizon with standard atmospheric refraction. Hills, buildings, altitude and unusual weather can shift what you see by a few minutes. Near the poles an event may not happen at all on a given day; we say so instead of guessing.
On Thursday, 15 October 2026 there is no sunrise or sunset in Alert. Polar night: the sun stays below the horizon all day.
When is golden hour in Alert today?
Golden hour, with the sun between 4° below and 6° above the horizon, runs 08:25–11:54 in the morning and 11:54–15:20 in the evening. Blue hour comes just before the morning one (07:14–08:25) and just after the evening one (15:20–16:31).
What is the moon phase in Alert today?
Waxing crescent, with 23% of the disc lit. Moonrise: No moonrise this day. Moonset: No moonset this day.
When is the next full moon in Alert?
The next full moon is on Monday, 26 October 2026 at 00:12 local time in Alert (EDT).
How accurate are these times?
Within about two minutes of the US Naval Observatory for sunrise, sunset, twilight, moonrise and moonset, and within a minute for the principal phases, for a sea-level horizon. Local terrain and weather can make the visible event a few minutes earlier or later.