Rule
Dark Skies
Anchorage - Dark Skies - Alaska
Anchorage, Alaska, United States
Moonless nights with crystal-clear skies for Milky Way shots
Upcoming Opportunities
When all conditions match, PhotoWeather marks an opportunity window.
Times shown in America/Anchorage
Next opportunity
Dark Skies
Anchorage
Tue, Jan 20 · 15:00–16:00 · 1h window
Medium confidence
41%
Dark Skies
Anchorage
Wed, Jan 21 · 03:00–08:00
Low
Dark Skies
Anchorage
Wed, Jan 21 · 08:00–09:00
Low
Dark Skies
Anchorage
Wed, Jan 21 · 09:00–12:00
Low
Dark Skies
Anchorage
Wed, Jan 21 · 12:00–03:00
Low
Dark Skies
Anchorage
Thu, Jan 22 · 09:00–12:00
Low
Dark Skies
Anchorage
Thu, Jan 22 · 12:00–17:00
Low
+3 more windows in the next 14 days
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72-hour requirements breakdown
What passed or failed, hour by hour0matching hours in the next 72 hours
OR logic: one branch per group is enough
Meets requirement
Misses requirement
Time America/Anchorage | Astronomical Night Any | Total Cloud Coverage ≤ 20.0% | Visibility ≥ 12000.0m | Precipitation Chance ≤ 10.0% | Moon Illumination OR1·B1≤ 35.0% | Moon Altitude OR1·B2≤ 10.0° |
|---|---|---|---|---|---|---|
| Sun, Jan 11 | ||||||
| 09:00 | ✓ | 94% | 140m | 40% | 41% | 10° |
| 10:00 | ✓ | 88% | 180m | 25% | 41% | 6.9° |
| 11:00 | ✓ | 82% | 160m | 25% | 41% | 2.1° |
| 12:00 | ✓ | 92% | 200m | 25% | 41% | -3.7° |
| 13:00 | ✓ | 90% | 220m | 18% | 41% | -10° |
| 14:00 | ✓ | 87% | 220m | 15% | 41% | -17° |
| 15:00 | ✓ | 97% | 280m | 10% | 33% | -25° |
| 16:00 | ✓ | 99% | 300m | 8% | 33% | -31° |
| 17:00 | ✓ | 100% | 460m | 5% | 33% | -38° |
| 18:00 | ✓ | 100% | 580m | 8% | 33% | -43° |
| 19:00 | ✓ | 98% | 560m | 8% | 33% | -46° |
| 20:00 | ✓ | 100% | 700m | 8% | 33% | -47° |
| 21:00 | ✓ | 100% | 780m | 8% | 33% | -46° |
| 22:00 | ✓ | 95% | 1080m | 8% | 33% | -43° |
| 23:00 | ✓ | 100% | 2040m | 0% | 33% | -37° |
| Mon, Jan 12 | ||||||
| 24:00 | ✓ | 100% | 1460m | 0% | 33% | -31° |
| 01:00 | ✓ | 100% | 1740m | 3% | 33% | -24° |
| 02:00 | ✓ | 100% | 1580m | 3% | 33% | -18° |
| 03:00 | ✓ | 100% | 1740m | 3% | 33% | -11° |
| 04:00 | ✓ | 86% | 1500m | 3% | 33% | -5° |
| 05:00 | ✓ | 81% | 1320m | 3% | 33% | 0.18° |
| 06:00 | ✓ | 79% | 1620m | 3% | 33% | 4.2° |
| 07:00 | ✓ | 63% | 2100m | 3% | 33% | 6.9° |
| 08:00 | ✓ | 62% | 1660m | 3% | 33% | 8° |
| 09:00 | ✓ | 60% | 2540m | 3% | 33% | 7.4° |
| 10:00 | ✓ | 60% | 3280m | 3% | 33% | 5.2° |
| 11:00 | ✓ | 74% | 4100m | 0% | 33% | 1.5° |
| 12:00 | ✓ | 74% | 3060m | 3% | 33% | -3.4° |
| 13:00 | ✓ | 33% | 3620m | 3% | 33% | -9.3° |
| 14:00 | ✓ | 17% | 4340m | 3% | 33% | -16° |
| 15:00 | ✓ | 0% | 3980m | 3% | 24% | -23° |
| 16:00 | ✓ | 0% | 4900m | 3% | 24% | -30° |
| 17:00 | ✓ | 0% | 5420m | 3% | 24% | -37° |
| 18:00 | ✓ | 28% | 6640m | 3% | 24% | -43° |
| 19:00 | ✓ | 39% | 7320m | 3% | 24% | -48° |
| 20:00 | ✓ | 95% | 4340m | 3% | 24% | -51° |
| 21:00 | ✓ | 100% | 2780m | 3% | 24% | -51° |
| 22:00 | ✓ | 100% | 2360m | 2% | 24% | -49° |
| 23:00 | ✓ | 92% | 2020m | 1% | 24% | -45° |
| Tue, Jan 13 | ||||||
| 24:00 | ✓ | 100% | 2220m | 0% | 24% | -40° |
| 01:00 | ✓ | 99% | 2060m | 0% | 24% | -33° |
| 02:00 | ✓ | 100% | 2500m | 0% | 24% | -26° |
| 03:00 | ✓ | 100% | 2840m | 0% | 24% | -19° |
| 04:00 | ✓ | 100% | 2400m | 1% | 24% | -13° |
| 05:00 | ✓ | 100% | 2020m | 2% | 24% | -7.2° |
| 06:00 | ✓ | 100% | 2560m | 3% | 24% | -2.3° |
| 07:00 | ✓ | 100% | 5100m | 4% | 24% | 1.4° |
| 08:00 | ✓ | 100% | 3200m | 4% | 24% | 3.7° |
| 09:00 | ✓ | 100% | 2720m | 5% | 24% | 4.4° |
| 10:00 | ✓ | 100% | 2320m | 8% | 24% | 3.5° |
| 11:00 | ✓ | 99% | 1200m | 11% | 24% | 1.1° |
| 12:00 | ✓ | 100% | 360m | 13% | 24% | -2.8° |
| 13:00 | ✓ | 99% | 1120m | 4% | 24% | -7.8° |
| 14:00 | ✓ | 98% | 1660m | 4% | 24% | -14° |
| 15:00 | ✓ | 95% | 800m | 5% | 16% | -20° |
| 16:00 | ✓ | 100% | 860m | 6% | 16% | -27° |
| 17:00 | ✓ | 100% | 1080m | 8% | 16% | -34° |
| 18:00 | ✓ | 100% | 1220m | 10% | 16% | -41° |
| 19:00 | ✓ | 100% | 1680m | 12% | 16% | -47° |
| 20:00 | ✓ | 100% | 2500m | 14% | 16% | -52° |
| 21:00 | ✓ | 100% | 2600m | 15% | 16% | -54° |
| 22:00 | ✓ | 100% | 2520m | 16% | 16% | -54° |
| 23:00 | ✓ | 100% | 1520m | 17% | 16% | -52° |
| Wed, Jan 14 | ||||||
| 24:00 | ✓ | 100% | 1680m | 17% | 16% | -47° |
| 01:00 | ✓ | 100% | 860m | 17% | 16% | -41° |
| 02:00 | ✓ | 100% | 240m | 18% | 16% | -34° |
| 03:00 | ✓ | 100% | 140m | 18% | 16% | -27° |
| 04:00 | ✓ | 100% | 180m | 19% | 16% | -21° |
| 05:00 | ✓ | 100% | 300m | 19% | 16% | -14° |
| 06:00 | ✓ | 100% | 140m | 20% | 16% | -8.6° |
| 07:00 | ✓ | 67% | 140m | 20% | 16% | -4° |
| 08:00 | ✓ | 33% | 220m | 20% | 16% | -0.64° |
How to read: colored cells show whether each predicate requirement is met; highlighted rows mean the full rule matched (an opportunity). For OR groups, only one branch is required, so some OR-branch predicates can be ✕ even in a matching hour.
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