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Amos · April 2027

Northern lights in Amos in April 2027

Answer

April gives Amos 9.1 hours of civil night on the 15th, the 8th darkest of its 12 months, under 66% mean cloud. 12% of April days since 1996 reached Kp 5, enough for the oval edge to reach Amos.
9.0 h
civil night, average night
SunCalc for 48.57, -78.12; NASA POWER; GFZ Kp

April against the rest of the year

April cloud at Amos averages 66% in NASA POWER's 2001 to 2020 record, 3 points clearer than its yearly mean. March is Amos's clearest month at 63%. By civil night times clear sky, April scores 3.1 hours at Amos, 6th of 12. Greater Sudbury, 316 km away, averages 64%, clearer by 2 points.

Civil night at Amos starts April at 9 h 56 min and reaches 8 h 10 min by April 30, 1.8 hours shorter. SWPC's 10 PM to 2 AM window is fully dark on every night. True astronomical darkness, the sun 18 degrees down, lasts 6.2 hours on the 15th.

April night by night

April opens toward a new moon on Apr 6, with full moon on Apr 20, in America/Toronto dates. Amos gets 144 hours of civil night with the moon below the horizon across the month. The best of them for moon-free darkness inside 10 PM to 2 AM: Apr 1 (4 h), Apr 2 (4 h), Apr 3 (4 h).

  1. 1

    22% lit

    8.9 h

  2. 2

    15% lit

    9.1 h

  3. 3

    8% lit

    9.3 h

  4. 4

    4% lit

    9.6 h

  5. 5

    1% lit

    9.7 h

  6. 6

    0% lit

    9.6 h

  7. 7

    2% lit

    8.8 h

  8. 8

    6% lit

    7.5 h

  9. 9

    12% lit

    6.1 h

  10. 10

    20% lit

    4.8 h

  11. 11

    30% lit

    3.7 h

  12. 12

    41% lit

    2.9 h

  13. 13

    53% lit

    2.2 h

  14. 14

    64% lit

    1.7 h

  15. 15

    74% lit

    1.4 h

  16. 16

    84% lit

    1.0 h

  17. 17

    91% lit

    0.7 h

  18. 18

    96% lit

    0.4 h

  19. 19

    99% lit

    0.0 h

  20. 20

    100% lit

    0.0 h

  21. 21

    98% lit

    1.0 h

  22. 22

    94% lit

    2.2 h

  23. 23

    89% lit

    3.3 h

  24. 24

    82% lit

    4.2 h

  25. 25

    74% lit

    4.9 h

  26. 26

    66% lit

    5.5 h

  27. 27

    57% lit

    5.9 h

  28. 28

    47% lit

    6.2 h

  29. 29

    38% lit

    6.5 h

  30. 30

    29% lit

    6.7 h

Each cell is the night that starts on that date. Hours are civil-dark time with the moon below the horizon; the green rule scales with them. Green outline: new moon. Bone outline: full moon.

Activity in past Aprils

Amos needs Kp 5 for the average oval edge to sit overhead. 106 of the 900 April days from 1996 to 2025 (12%) reached it in the GFZ Potsdam record, 4th of 12 months; storm days with Kp 5 or more made up 12%. Amos sits at 57.7 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.

April across Canada

Amos ranks 6th in Canada for civil night on April 15, behind Sydney at 9.3 hours. Coming from March (11.0 hours at Amos), April loses darkness, and May brings shorter nights (7.3 hours on the 15th).

Civil night on April 15 and April cloud, month-page towns in Canada
TownCivil nightCloud
Sydney9.3 h73%
Québec9.2 h67%
Greater Sudbury9.2 h64%
Trois-Rivières9.2 h66%
St. John's9.2 h77%
Amos9.1 h66%
Saguenay9.1 h70%
Thunder Bay9.1 h69%
Lethbridge9.0 h68%
Winnipeg8.9 h61%
Regina8.9 h67%
Kelowna8.9 h71%

Darkness and moon, every night

Amos, April 2027: each night from local noon to the next noon
NightCivilAstronomicalMoon-free darkMoon-free, 10 PM to 2 AMMoon lit
Thu Apr 19 h 56 min7 h 18 min8 h 52 min4 h22%
Fri Apr 29 h 52 min7 h 14 min9 h 7 min4 h15%
Sat Apr 39 h 49 min7 h 9 min9 h 21 min4 h8%
Sun Apr 49 h 45 min7 h 5 min9 h 34 min4 h4%
Mon Apr 59 h 41 min7 h9 h 41 min4 h1%
Tue Apr 69 h 37 min6 h 55 min9 h 37 min4 h0%
Wed Apr 79 h 34 min6 h 51 min8 h 49 min4 h2%
Thu Apr 89 h 30 min6 h 46 min7 h 27 min3 h 28 min6%
Fri Apr 99 h 26 min6 h 41 min6 h 5 min2 h 8 min12%
Sat Apr 109 h 23 min6 h 37 min4 h 48 min54 min20%
Sun Apr 119 h 19 min6 h 32 min3 h 43 min0 min30%
Mon Apr 129 h 15 min6 h 27 min2 h 52 min0 min41%
Tue Apr 139 h 12 min6 h 22 min2 h 14 min0 min53%
Wed Apr 149 h 8 min6 h 18 min1 h 44 min0 min64%
Thu Apr 159 h 4 min6 h 13 min1 h 21 min0 min74%
Fri Apr 169 h 1 min6 h 8 min1 h0 min84%
Sat Apr 178 h 57 min6 h 3 min41 min0 min91%
Sun Apr 188 h 53 min5 h 58 min22 min0 min96%
Mon Apr 198 h 50 min5 h 53 min2 min0 min99%
Tue Apr 208 h 46 min5 h 48 min0 min0 min100%
Wed Apr 218 h 42 min5 h 43 min58 min0 min98%
Thu Apr 228 h 39 min5 h 37 min2 h 10 min1 h 1 min94%
Fri Apr 238 h 35 min5 h 32 min3 h 15 min2 h 8 min89%
Sat Apr 248 h 31 min5 h 27 min4 h 11 min3 h 5 min82%
Sun Apr 258 h 28 min5 h 22 min4 h 54 min3 h 50 min74%
Mon Apr 268 h 24 min5 h 17 min5 h 27 min4 h66%
Tue Apr 278 h 21 min5 h 11 min5 h 53 min4 h57%
Wed Apr 288 h 17 min5 h 6 min6 h 12 min4 h47%
Thu Apr 298 h 14 min5 h6 h 28 min4 h38%
Fri Apr 308 h 10 min4 h 55 min6 h 42 min4 h29%
Moon lit: SunCalc illuminated fraction at the middle of the 10 PM to 2 AM window.

Questions

Can you see the northern lights in Amos in April?
On dark, clear nights with enough activity. 30 of 30 nights at Amos have civil darkness, and 12% of past April days reached Kp 5.
How dark is Amos in April?
Amos averages 9.0 hours of civil night a night in April 2027, from 9 h 56 min on the 1st to 8 h 10 min on the last night.
How cloudy is Amos in April?
NASA POWER's 2001 to 2020 climatology gives Amos's 1 degree cell 66% mean cloud in April, against 69% for the whole year. It is an all-hours average, not a forecast.
What is the best night in April 2027 for aurora in Amos?
By darkness and moon alone, Apr 1, with 4 h of moon-free darkness inside 10 PM to 2 AM at Amos. Activity on that date will only be known hours ahead.
Is April or May better in Amos?
By civil night times the clear share, April scores 3.1 hours at Amos and May 2.4. April comes out ahead.

Sources and verification

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.