Irkutsk Sunrise & Sunset: December 2026

December Sunrise & Sunset in Irkutsk: Complete Monthly Guide

In December 2026, Irkutsk has an average of 7h 48m of daylight per day. Sunrise times range from 08:50 at the start of the month to 09:13 at the end, while sunset shifts from 16:55 to 16:59.

December in Irkutsk brings short winter days with early sunsets. Average sunrise in December is 09:07 and average sunset is 16:51. The daily table above shows the exact sunrise and sunset time for each day of the month.

Day Length Variation in December

Day length in Irkutsk in December changes throughout the month. Near the solstices (June 21 for the northern hemisphere, December 21 for the southern hemisphere), day length changes very slowly, less than 1 minute per day. Near the equinoxes (March 20 and September 22), day length changes rapidly, gaining or losing 2 to 4 minutes per day depending on latitude.

At Irkutsk's latitude of 52.3°, the rate of day length change in December is approximately 3 to 5 minutes per day during the weeks furthest from the solstices. This means that sunrise in Irkutsk shifts by approximately 60 to 90 minutes over the course of December.

Golden Hour in Irkutsk in December

Golden hour in Irkutsk in December occurs twice each day: in the morning shortly after sunrise, and in the evening before sunset. The duration depends on the sun's angle of elevation above the horizon, which varies with latitude and month. In Decemberat Irkutsk's latitude of 52.3°, golden hour lasts approximately 45 to 75 minutes.

For photographers planning shoots in Irkutsk in December: plan to arrive at your location 30 to 40 minutes before the listed sunrise time to capture blue hour before golden hour begins. The transition from blue hour to golden hour creates the most dramatic color sequences. Evening golden hour in December begins about 45 to 60 minutes before sunset and produces warmer, more orange tones than the morning session.

Blue Hour and Twilight in Irkutsk in December

Civil twilight in Irkutsk in December begins before sunrise and ends after sunset, creating windows of usable natural light even outside the official sunrise-to-sunset window. Civil twilight occurs when the sun is between 0 and 6 degrees below the horizon. Nautical twilight spans 6 to 12 degrees below the horizon. Astronomical twilight spans 12 to 18 degrees below the horizon.

The total twilight window in Irkutsk in December extends the usable light day by approximately 60 to 90 minutes beyond the sunrise-to-sunset window. This extended twilight is valuable for photographers who want to shoot in soft, diffused light without harsh shadows.

Photography Tips for December in Irkutsk

Shooting in Irkutsk in December requires adapting to the season's specific light quality and timing. Camera settings for sunrise photography in December:

• Blue hour: ISO 800 to 1,600; aperture f/8; shutter speed 10 to 30 seconds on tripod.
• Golden hour: ISO 100 to 400; aperture f/8 to f/16 for landscapes, or f/1.8 to f/2.8 for portraits; shutter speed 1/250 to 1/1,000s handheld.
• Post-sunrise (30 minutes after): ISO 100; aperture f/11; shutter speed 1/500 to 1/2,000s.

In December, Irkutsk's weather patterns affect photography conditions. Check cloud cover forecasts the evening before a planned shoot: a thin layer of clouds above the horizon creates more dramatic golden and orange tones than a clear sky. Fully overcast conditions produce flat, diffused light that is good for portraits but lacks the dramatic quality of golden hour. Partly cloudy skies create the most dramatic conditions.

About This Monthly Sunrise Data

All sunrise and sunset times in this December table for Irkutsk are calculated using Jean Meeus astronomical algorithms, implemented via the SunCalc library. Calculations use the coordinates of Irkutsk (52.2978°, 104.2964°) and the local timezone (Asia/Irkutsk). Times are accurate to within 1 minute and account for atmospheric refraction.

The times shown are for the center of the sun crossing the horizon. Sunrise is defined as the moment when the upper limb of the sun first appears above the mathematical horizon. Sunset is when the upper limb disappears below the horizon. Both definitions account for atmospheric refraction, which lifts the apparent position of the sun by approximately 0.5 to 1 degree near the horizon.

Frequently Asked Questions: December Sunrise & Sunset in Irkutsk

What is the average sunrise time in Irkutsk in December?

The average sunrise time in Irkutsk in December 2026 is approximately 09:07. This is based on the mid-month calculation for Irkutsk at latitude 52.30° and longitude 104.30°. Actual daily sunrise times vary from 08:50 on the first of the month to 09:13 on the last day. See the full daily table above for exact times.

How many hours of daylight does Irkutsk get in December?

Irkutsk receives an average of 7h 48m of daylight per day in December 2026. This is calculated as the difference between sunrise and sunset and does not include twilight periods. Day length varies from 8h 05m on the first of the month to 7h 46m on the last day.

What is the earliest sunrise in Irkutsk in December?

The earliest sunrise in Irkutsk in December 2026 occurs on 2026-12-01 at 08:50. The latest sunrise in the month occurs on 2026-12-26 at 09:13.

What time is golden hour in Irkutsk in December?

Golden hour in Irkutsk in December occurs twice daily. Morning golden hour begins at sunrise (09:07 at mid-month) and lasts approximately 45 to 75 minutes. Evening golden hour begins approximately 45 to 60 minutes before sunset (16:51 at mid-month). The precise start of golden hour is when the sun's altitude drops below 6 degrees above the horizon.

Is December a good time to photograph sunrise in Irkutsk?

December offers late sunrise times in Irkutsk (around 09:07), which is convenient for photographers. Winter light is crisp and directional, and clear cold mornings often produce vivid color in the sky before and during sunrise.

When does civil twilight start in Irkutsk in December?

Civil twilight in Irkutsk in December begins approximately 20 to 30 minutes before sunrise and ends 20 to 30 minutes after sunset. At Irkutsk's latitude of 52.3°, civil twilight in December starts around 08:42 in the morning. Civil twilight provides enough light for outdoor activities without artificial lighting and is considered the beginning of the usable photography window each day.