July 21, 2026 · Londonderry County Borough, Northern Ireland
Sunrise in Londonderry County Borough today is at 05:20. Day length is 16h 33m. See below for sunset, solar noon, dawn and dusk — all times calculated astronomically for Londonderry County Borough's coordinates and updated daily.
Londonderry County Borough lies at 55°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 Londonderry County Borough.
The longest day in Londonderry County Borough is around 17h 22m (around June 21). The shortest is around 7h 10m (around December 21). Days are currently getting shorter — losing about 3 minutes per day.
| Month | Sunrise | Sunset | Day length |
|---|---|---|---|
| January | 08:47 | 16:31 | 7h 44m |
| February | 07:55 | 17:33 | 9h 38m |
| March | 06:48 | 18:30 | 11h 42m |
| April | 06:30 | 20:31 | 14h 1m |
| May | 05:25 | 21:28 | 16h 4m |
| June | 04:51 | 22:10 | 17h 19m |
| July | 05:09 | 22:02 | 16h 52m |
| August | 06:02 | 21:07 | 15h 5m |
| September | 07:00 | 19:52 | 12h 51m |
| October | 07:57 | 18:35 | 10h 38m |
| November | 08:00 | 16:29 | 8h 30m |
| December | 08:48 | 16:02 | 7h 14m |