← single night · whole-night plan
Which nights are best for a target over the coming weeks. The astronomy mark (darkness × altitude × Moon) is computed for every night; the weather and the overall mark exist only where Open-Meteo has a forecast (the next four days) or ERA5 history (past nights) — the rest is honestly blank.
| night of | astronomy | weather | overall | best window | highest | dark h | Moon | Moon sep. |
|---|---|---|---|---|---|---|---|---|
| 2025-05-14 Wed | 0 | 100 | 0 | — | 79.1° 11:25 | 5.62 | 95% | 133.3° |
| 2025-05-15 Thu | 0 | 0 | 0 | — | 79.1° 11:20 | 5.56 | 90% | 121.9° |
| 2025-05-16 Fri | 0 | 0 | 0 | — | 79.1° 11:15 | 5.51 | 84% | 110.1° |
| 2025-05-17 Sat | 0 | 0 | 0 | — | 79.1° 11:10 | 5.46 | 76% | 98.1° |
| 2025-05-18 Sun | 0 | 100 | 0 | — | 79.1° 11:05 | 5.41 | 66% | 85.8° |
| 2025-05-19 Mon | 0 | 100 | 0 | — | 79.1° 11:05 | 5.36 | 56% | 73.2° |
| 2025-05-20 Tue | 0 | 98 | 0 | — | 79.1° 11:00 | 5.31 | 45% | 60.4° |
| 2025-05-21 Wed | 0 | 82 | 0 | — | 79.1° 10:55 | 5.26 | 34% | 47.5° |
| 2025-05-22 Thu | 0 | 13 | 0 | — | 79.1° 10:50 | 5.21 | 24% | 34.6° |
| 2025-05-23 Fri | 0 | 12 | 0 | — | 79.1° 10:50 | 5.16 | 15% | 22.9° |
| 2025-05-24 Sat | 0 | 0 | 0 | — | 79.1° 10:45 | 5.12 | 7% | 16.3° |
| 2025-05-25 Sun | 0 | 0 | 0 | — | 79.1° 10:40 | 5.07 | 2% | 21.0° |
| 2025-05-26 Mon | 0 | 67 | 0 | — | 79.1° 10:35 | 5.03 | 0% | 32.6° |
| 2025-05-27 Tue | 0 | 97 | 0 | — | 79.1° 10:30 | 4.98 | 1% | 46.0° |
| 2025-05-28 Wed | 1 | 90 | 1 | — | 79.1° 10:30 | 4.94 | 5% | 59.7° |
| 2025-05-29 Thu | 0 | 0 | 0 | — | 79.1° 10:25 | 4.9 | 11% | 73.4° |
| 2025-05-30 Fri | 1 | 0 | 0 | — | 79.1° 10:20 | 4.86 | 19% | 86.7° |
| 2025-05-31 Sat | 1 | 93 | 1 | — | 79.1° 10:15 | 4.82 | 28% | 99.6° |
| 2025-06-01 Sun | 1 | 25 | 0 | — | 79.1° 10:10 | 4.79 | 38% | 112.0° |
| 2025-06-02 Mon | 1 | 100 | 1 | — | 79.1° 10:10 | 4.75 | 48% | 123.9° |
| 2025-06-03 Tue | 1 | 100 | 1 | — | 79.1° 10:05 | 4.72 | 58% | 135.4° |
| 2025-06-04 Wed | 1 | 100 | 1 | — | 79.1° 10:00 | 4.69 | 67% | 146.2° |
| 2025-06-05 Thu | 2 | 62 | 1 | — | 79.1° 09:55 | 4.65 | 76% | 155.8° |
| 2025-06-06 Fri | 2 | 100 | 2 | 04:25–04:30 (marginal, 0.08 h) | 79.1° 09:55 | 4.63 | 83% | 162.7° |
| 2025-06-07 Sat | 2 | 100 | 2 | 04:20–04:30 (marginal, 0.17 h) | 79.1° 09:50 | 4.6 | 90% | 163.0° |
| 2025-06-08 Sun | 2 | 100 | 2 | 04:20–04:30 (marginal, 0.17 h) | 79.1° 09:45 | 4.57 | 95% | 156.5° |
| 2025-06-09 Mon | 2 | 91 | 2 | — | 79.1° 09:40 | 4.55 | 98% | 146.9° |
| 2025-06-10 Tue | 2 | 10 | 0 | — | 79.1° 09:35 | 4.53 | 100% | 136.1° |
| 2025-06-11 Wed | 3 | 93 | 3 | 04:20–04:30 (marginal, 0.17 h) | 79.1° 09:35 | 4.51 | 100% | 124.7° |
| 2025-06-12 Thu | 3 | 100 | 3 | 04:15–04:30 (marginal, 0.25 h) | 79.1° 09:30 | 4.49 | 97% | 112.9° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2025-05-14&days=30"
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&days=30&format=csv" -o m31-calendar.csvOne row per night: score_astronomy always, score_weather / score only where a forecast or history exists (null otherwise, with weather_source saying which), best window, dark hours, Moon illumination and separation, transit. 7–60 nights. Errors: 400 with invalid_date or target_unresolved. Results are cached for six hours; calculation version 2026-10-10.1.