July 21, 2026 · Irkutsk, Russia
Sunset in Irkutsk today is at 21:13. Day length is 16h 6m. See below for sunrise, solar noon, dawn and dusk — all times calculated astronomically for Irkutsk's coordinates and updated daily.
Irkutsk lies at 52°N. At this latitude, day length varies significantly through the year — from roughly 7–8 hours in midwinter to 16–17 hours at midsummer.
Sunset shifts later through spring and earlier through autumn — changing fastest near the equinoxes and slowest near the summer and winter solstices. See the year chart to visualise how sunset times shift month by month for Irkutsk.
The longest day in Irkutsk is around 16h 47m (around June 21). The shortest is around 7h 41m (around December 21). Days are currently getting shorter — losing about 3 minutes per day.
| Month | Sunset | Sunrise | Day length |
|---|---|---|---|
| January | 17:19 | 09:06 | 8h 12m |
| February | 18:15 | 08:21 | 9h 55m |
| March | 19:06 | 07:19 | 11h 47m |
| April | 20:00 | 06:07 | 13h 53m |
| May | 20:51 | 05:09 | 15h 41m |
| June | 21:27 | 04:41 | 16h 45m |
| July | 21:19 | 04:59 | 16h 20m |
| August | 20:31 | 05:46 | 14h 45m |
| September | 19:21 | 06:37 | 12h 44m |
| October | 18:11 | 07:28 | 10h 44m |
| November | 17:13 | 08:24 | 8h 49m |
| December | 16:51 | 09:07 | 7h 44m |