Comparison
Sunderland vs Burnley for the northern lights
Answer
Side by side
| Figure | Sunderland | Burnley |
|---|---|---|
| Dipole latitude | 56.8° | 55.9° |
| Kp for the oval edge overhead | Kp 5 | Kp 6 |
| Civil night, December 15 | 15.1 h | 15.0 h |
| Dark-season days | 365 | 365 |
| Nights with no civil darkness | 0 | 0 |
| Dark-month cloud, NASA POWER | 77% | 77% |
| Solar midnight, December 15 | 00:01 | 00:04 |
Sunderland sits at 56.8 degrees geomagnetic. By SWPC's rule the average oval edge is overhead at Kp 5, and aurora is usually visible on the northern horizon at G1 (Kp 5) or less. Burnley sits at 55.9 degrees geomagnetic. By SWPC's rule the average oval edge is overhead at Kp 6, and aurora is usually visible on the northern horizon at G1 (Kp 5) or less.
Civil night month by month
On December 15 Sunderland has 15.1 hours of civil night and Burnley 15.0. Across the 15th of each month, Sunderland is darker in 5 months and Burnley in 6. The widest gap comes in June, when Burnley has 0.4 more hours.
| Month | Sunderland | Burnley | Difference |
|---|---|---|---|
| January | 14.6 h | 14.5 h | +0.1 h |
| February | 12.9 h | 12.8 h | +0.1 h |
| March | 10.8 h | 10.9 h | -0.1 h |
| April | 8.4 h | 8.6 h | -0.2 h |
| May | 6.1 h | 6.4 h | -0.3 h |
| June | 4.6 h | 5.0 h | -0.4 h |
| July | 5.3 h | 5.6 h | -0.3 h |
| August | 7.5 h | 7.7 h | -0.2 h |
| September | 10.0 h | 10.0 h | +0.0 h |
| October | 12.2 h | 12.1 h | +0.1 h |
| November | 14.1 h | 14.0 h | +0.1 h |
| December | 15.1 h | 15.0 h | +0.1 h |
Season and midnight sun
Sunderland has some civil darkness every night of 2026, and clears Glow's 4-hour dark-season bar every evening. Burnley has some civil darkness every night of 2026, and clears Glow's 4-hour dark-season bar every evening.
Distance, cloud and time zones
The two towns are 135 km apart by great circle. In the dark months both average about 77% cloud in NASA POWER's 2001 to 2020 record. Sunderland's best month by civil night times clear sky is December. Burnley's best month by civil night times clear sky is December. Time zones: Europe/London and Europe/London.
For tonight, open the live pages for Sunderland and Burnley, which carry the live OVATION cell.
Questions
- Is Sunderland or Burnley better for the northern lights?
- Sunderland sits closer to the oval, at 56.8 degrees geomagnetic against 55.9. Darkness, cloud and your dates decide the rest; the tables on this page show both towns month by month.
- Which has longer nights in December, Sunderland or Burnley?
- Sunderland, with 15.1 hours of civil night on December 15 against 15.0 in Burnley.
- What Kp do Sunderland and Burnley need?
- By SWPC's rule of 66 degrees at Kp 0 and 2 degrees per step, Sunderland needs about Kp 5 and Burnley Kp 6 for the average oval edge to sit overhead.
- When is it too light for aurora in Sunderland and Burnley?
- Sunderland: never, every night has civil darkness. Burnley: never, every night has civil darkness.
- Which is clearer, Sunderland or Burnley?
- Sunderland, with 77% mean cloud in the months with 4 hours or more of civil night against 77% in Burnley (NASA POWER, 2001 to 2020).
Sources and verification
- IGRF-14 coefficients, NOAA NCEIhttps://www.ngdc.noaa.gov/IAGA/vmod/coeffs/igrf14coeffs.txt
- SunCalchttps://github.com/mourner/suncalc
- GeoNameshttps://www.geonames.org/export/
- NASA POWER climatologyhttps://power.larc.nasa.gov/docs/services/api/temporal/climatology/
- NOAA SWPC, Tips on viewing the aurorahttps://www.spaceweather.gov/content/tips-viewing-aurora
Quoted figures last checked against their sources on 2026-09-30; next review 2026-12-31. Computed figures come from SunCalc and the IGRF-14 dipole as described in the methodology. Every quote is listed in the sources ledger.