How long is the daylight duration in Chicago across different seasons?

At latitude 41.88°, Chicago experiences temperate seasonal variations. Daylight stretches to approximately 14–15 hours during mid-summer and contracts to roughly 9–10 hours during mid-winter.

When are the Golden Hour and Blue Hour in Chicago?

The morning Golden Hour begins at sunrise and lasts for approximately 45–60 minutes, while the evening Golden Hour starts about an hour before sunset. The Blue Hour occurs immediately following sunset (and before dawn) during civil twilight when the sun is between 0° and 6° below the horizon, creating vivid deep blue and indigo skylines across Chicago.

When does Solar Noon occur in Chicago?

Solar Noon in Chicago is the exact astronomical instant when the sun crosses the local meridian (-87.63° longitude) and reaches its maximum daily elevation. Depending on the time of year (the Equation of Time) and whether daylight saving time is active, Solar Noon generally falls between 11:45 AM and 1:30 PM in the America/Chicago zone.

How long does civil twilight last in Chicago?

In Chicago, civil twilight typically lasts between 25 and 45 minutes after sunset. Because the angle at which the sun sinks below the horizon depends on latitude (41.88°), twilight duration increases in the summer months and is longer than in equatorial regions.

How long is the daylight duration in Chicago across different seasons?

At latitude 41.88°, Chicago experiences temperate seasonal variations. Daylight stretches to approximately 14–15 hours during mid-summer and contracts to roughly 9–10 hours during mid-winter.

When are the Golden Hour and Blue Hour in Chicago?

The morning Golden Hour begins at sunrise and lasts for approximately 45–60 minutes, while the evening Golden Hour starts about an hour before sunset. The Blue Hour occurs immediately following sunset (and before dawn) during civil twilight when the sun is between 0° and 6° below the horizon, creating vivid deep blue and indigo skylines across Chicago.

When does Solar Noon occur in Chicago?

Solar Noon in Chicago is the exact astronomical instant when the sun crosses the local meridian (-87.63° longitude) and reaches its maximum daily elevation. Depending on the time of year (the Equation of Time) and whether daylight saving time is active, Solar Noon generally falls between 11:45 AM and 1:30 PM in the America/Chicago zone.

How long does civil twilight last in Chicago?

In Chicago, civil twilight typically lasts between 25 and 45 minutes after sunset. Because the angle at which the sun sinks below the horizon depends on latitude (41.88°), twilight duration increases in the summer months and is longer than in equatorial regions.

Chicago, United States Solar Ephemeris

Sunrise & Sunset in Chicago

Accurate daily dawn, dusk, civil twilight, solar noon, and day length schedule for Chicago. Coordinates: 41.8781° N, 87.6298° W (America/Chicago).

Current Time in Chicago Moon Phases in Chicago

Solar Ephemeris Calculation

Chicago, United States

Lat 41.88°, Lng -87.63° • America/Chicago

Sunrise06:29Upper limb crosses horizon

Sunset19:03Sun vanishes below horizon

Solar Noon12:46Sun at highest altitude

Total Daylight12h 34mBetween rise and set

Atmospheric Twilight Schedule in Chicago

Sun angles relative to horizon: Civil (0° to 6°), Nautical (6° to 12°), Astronomical (12° to 18°).

Civil Twilight

Dawn: 06:01Dusk: 19:31

Sufficient natural light for outdoor activities without artificial lighting.

Nautical Twilight

Dawn: 05:28Dusk: 20:04

Horizon visible at sea; bright navigational stars can be sighted.

Astronomical Twilight

Dawn: 04:54Dusk: 20:39

Threshold between twilight and complete optical night sky darkness.

Photographer Golden Hour WindowsMorning: 06:55 • Evening: 18:37

Optimal Soft Light

Geographical Solar Characteristics

Solar Profile & Seasonal Cycles in Chicago

Positioned at 41.8781° latitude and -87.6298° longitude, Chicago operates under the America/Chicago time standard. The local solar trajectory is determined by Earth's axial tilt relative to Chicago's geographic latitude:

Hemisphere & ZoneNorthern Hemisphere • Temperate Zone

Longest daylight occurs around June 21; shortest daylight occurs around December 21.

Atmospheric Refraction Lift+34 Arcminutes (~0.566°)

Atmospheric bending causes the sun to become visible approximately 2.5 to 3.5 minutes prior to true geometric sunrise in Chicago.

Solar Noon VarianceEquation of Time Drift

Depending on the time of year, true astronomical midday in Chicago deviates from clock midday by up to ±16 minutes due to orbital eccentricity.

Cinematography & Photography Protocol

Golden Hour & Blue Hour Photography Windows in Chicago

For landscape photographers, videographers, and creators in Chicago, the hour surrounding sunrise and sunset provides the most flattering, diffuse natural lighting:

Golden Hour (Warm Spectrum)Sun +6° to 0°

Light rays travel through extensive atmospheric air masses, scattering high-frequency blue photons and bathing Chicago's skyline and landscapes in warm amber, gold, and terracotta hues with long, soft shadows.

Blue Hour (Indigo & Cobalt)Sun 0° to -6°

Occurring during civil twilight, Chappuis ozone absorption filters longer red wavelengths, producing balanced cobalt twilight skies that contrast against the warm artificial architectural lighting of Chicago.

Frequently Asked Questions

Common queries, time calculations, and scientific explanations

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Today's exact sunrise and sunset times in Chicago (United States) are computed using high-precision NOAA solar ephemeris algorithms for coordinates 41.8781° latitude and -87.6298° longitude. The calculations account for atmospheric refraction (34 arcminutes) and local elevation.