← 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. |
|---|---|---|---|---|---|---|---|---|
| 2029-12-26 Wed | 17 | — | unknown | 18:40–19:10 (good, 0.5 h) | 71.1° 14:00 | 11.49 | 66% | 130.1° |
| 2029-12-27 Thu | 15 | — | unknown | 18:40–19:05 (good, 0.42 h) | 71.1° 14:00 | 11.49 | 55% | 121.4° |
| 2029-12-28 Fri | 14 | — | unknown | 18:40–19:00 (good, 0.33 h) | 71.1° 13:55 | 11.48 | 44% | 111.4° |
| 2029-12-29 Sat | 12 | — | unknown | 18:40–18:55 (good, 0.25 h) | 71.1° 13:50 | 11.48 | 33% | 100.6° |
| 2029-12-30 Sun | 11 | — | unknown | 18:40–18:50 (good, 0.17 h) | 71.1° 13:45 | 11.47 | 23% | 89.3° |
| 2029-12-31 Mon | 8 | — | unknown | 18:45–18:50 (good, 0.08 h) | 71.1° 13:40 | 11.46 | 14% | 78.0° |
| 2030-01-01 Tue | 7 | — | unknown | 18:10–19:10 (marginal, 1.0 h) | 71.1° 13:40 | 11.45 | 6% | 66.9° |
| 2030-01-02 Wed | 7 | — | unknown | 18:45–19:10 (marginal, 0.42 h) | 71.1° 13:35 | 11.44 | 2% | 56.5° |
| 2030-01-03 Thu | 5 | — | unknown | 18:45–19:05 (marginal, 0.33 h) | 71.1° 13:30 | 11.43 | 0% | 47.7° |
| 2030-01-04 Fri | 4 | — | unknown | 18:10–18:35 (marginal, 0.42 h) | 71.1° 13:25 | 11.42 | 1% | 41.3° |
| 2030-01-05 Sat | 3 | — | unknown | 18:45–18:55 (marginal, 0.17 h) | 71.1° 13:25 | 11.4 | 4% | 38.5° |
| 2030-01-06 Sun | 2 | — | unknown | 18:15–18:20 (marginal, 0.08 h) | 71.1° 13:20 | 11.39 | 10% | 39.8° |
| 2030-01-07 Mon | 1 | — | unknown | — | 71.1° 13:15 | 11.37 | 17% | 44.5° |
| 2030-01-08 Tue | 1 | — | unknown | — | 71.1° 13:10 | 11.36 | 25% | 51.3° |
| 2030-01-09 Wed | 1 | — | unknown | — | 71.1° 13:05 | 11.34 | 34% | 59.4° |
| 2030-01-10 Thu | 0 | — | unknown | — | 71.1° 13:05 | 11.32 | 44% | 68.1° |
| 2030-01-11 Fri | 0 | — | unknown | — | 71.1° 13:00 | 11.3 | 53% | 77.2° |
| 2030-01-12 Sat | 0 | — | unknown | — | 71.1° 12:55 | 11.29 | 63% | 86.4° |
| 2030-01-13 Sun | 0 | — | unknown | — | 71.1° 12:50 | 11.27 | 71% | 95.7° |
| 2030-01-14 Mon | 0 | — | unknown | — | 71.1° 12:45 | 11.25 | 80% | 104.9° |
| 2030-01-15 Tue | 0 | — | unknown | — | 71.1° 12:45 | 11.22 | 87% | 113.9° |
| 2030-01-16 Wed | 0 | — | unknown | — | 71.1° 12:40 | 11.2 | 93% | 122.5° |
| 2030-01-17 Thu | 0 | — | unknown | — | 71.1° 12:35 | 11.18 | 97% | 130.4° |
| 2030-01-18 Fri | 0 | — | unknown | — | 71.1° 12:30 | 11.16 | 99% | 136.7° |
| 2030-01-19 Sat | 0 | — | unknown | — | 71.1° 12:30 | 11.13 | 100% | 140.7° |
| 2030-01-20 Sun | 0 | — | unknown | — | 71.1° 12:25 | 11.11 | 98% | 141.3° |
| 2030-01-21 Mon | 0 | — | unknown | — | 71.1° 12:20 | 11.08 | 94% | 138.1° |
| 2030-01-22 Tue | 0 | — | unknown | — | 71.1° 12:15 | 11.05 | 88% | 131.8° |
| 2030-01-23 Wed | 0 | — | unknown | — | 71.1° 12:10 | 11.03 | 80% | 123.3° |
| 2030-01-24 Thu | 0 | — | unknown | — | 71.1° 12:10 | 11.0 | 70% | 113.5° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2029-12-26&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.