July 21, 2026 · Arvayheer, Mongolia
Sunrise in Arvayheer today is at 05:38. Day length is 15h 16m. See below for sunset, solar noon, dawn and dusk — all times calculated astronomically for Arvayheer's coordinates and updated daily.
Arvayheer lies at 46°N. At this latitude, day length varies significantly through the year — from roughly 7–8 hours in midwinter to 16–17 hours at midsummer.
Sunrise shifts earlier through spring and later through autumn — changing fastest near the equinoxes and barely at all near the summer and winter solstices. See the year chart to visualise how sunrise and sunset times shift month by month for Arvayheer.
The longest day in Arvayheer is around 15h 47m (around June 21). The shortest is around 8h 36m (around December 21). Days are currently getting shorter — losing about 2 minutes per day.
| Month | Sunrise | Sunset | Day length |
|---|---|---|---|
| January | 08:49 | 17:49 | 8h 60m |
| February | 08:14 | 18:34 | 10h 20m |
| March | 07:24 | 19:14 | 11h 50m |
| April | 06:24 | 19:55 | 13h 31m |
| May | 05:37 | 20:35 | 14h 57m |
| June | 05:17 | 21:03 | 15h 46m |
| July | 05:32 | 20:59 | 15h 27m |
| August | 06:08 | 20:21 | 14h 13m |
| September | 06:47 | 19:23 | 12h 36m |
| October | 07:26 | 18:25 | 10h 59m |
| November | 08:10 | 17:38 | 9h 28m |
| December | 08:46 | 17:24 | 8h 38m |