July 21, 2026 · Kostroma, Russia
Kostroma has 17h 8m of daylight today. Sunrise is at 03:49 and sunset is at 20:57. All times are calculated astronomically for Kostroma's exact coordinates.
Kostroma lies at 58°N. At this latitude, day length varies significantly through the year — from roughly 7–8 hours in midwinter to 16–17 hours at midsummer.
Day length changes fastest near the spring and autumn equinoxes and slowest near the longest day and shortest day of the year. See the year chart to visualise how daylight hours shift month by month for Kostroma, or see daylight hours for every day of the year.
The longest day in Kostroma is around 18h 7m (around June 21). The shortest is around 6h 31m (around December 21). Days are currently getting shorter — losing about 4 minutes per day.
| Month | Day length | Sunrise | Sunset |
|---|---|---|---|
| January | 7h 14m | 08:49 | 16:03 |
| February | 9h 25m | 07:49 | 17:14 |
| March | 11h 44m | 06:34 | 18:18 |
| April | 14h 19m | 05:08 | 19:26 |
| May | 16h 37m | 03:55 | 20:32 |
| June | 18h 4m | 03:16 | 21:19 |
| July | 17h 28m | 03:39 | 21:07 |
| August | 15h 22m | 04:41 | 20:03 |
| September | 12h 52m | 05:46 | 18:39 |
| October | 10h 24m | 06:51 | 17:15 |
| November | 8h 0m | 08:02 | 16:02 |
| December | 6h 35m | 08:55 | 15:29 |