July 21, 2026 · Lanzhou, China
Sunset in Lanzhou today is at 20:20. Day length is 14h 16m. See below for sunrise, solar noon, dawn and dusk — all times calculated astronomically for Lanzhou's coordinates and updated daily.
Lanzhou lies at 36°N. At this latitude, day length varies moderately — from around 10 hours in midwinter to 14–15 hours in 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 Lanzhou.
The longest day in Lanzhou is around 14h 37m (around June 21). The shortest is around 9h 42m (around December 21). Days are currently getting shorter — losing about 1 minute per day.
| Month | Sunset | Sunrise | Day length |
|---|---|---|---|
| January | 18:13 | 08:15 | 9h 58m |
| February | 18:46 | 07:54 | 10h 52m |
| March | 19:12 | 07:17 | 11h 55m |
| April | 19:38 | 06:33 | 13h 5m |
| May | 20:04 | 06:00 | 14h 4m |
| June | 20:24 | 05:48 | 14h 36m |
| July | 20:23 | 05:59 | 14h 23m |
| August | 19:57 | 06:23 | 13h 34m |
| September | 19:14 | 06:48 | 12h 27m |
| October | 18:31 | 07:12 | 11h 19m |
| November | 17:59 | 07:42 | 10h 17m |
| December | 17:52 | 08:09 | 9h 44m |