← 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. |
|---|---|---|---|---|---|---|---|---|
| 2035-12-15 Sat | 28 | — | unknown | 18:35–19:45 (good, 1.17 h) | 71.1° 14:45 | 11.49 | 99% | 132.3° |
| 2035-12-16 Sun | 31 | — | unknown | 18:35–19:40 (good, 1.08 h) | 71.1° 14:45 | 11.5 | 94% | 138.0° |
| 2035-12-17 Mon | 32 | — | unknown | 18:35–19:45 (good, 1.17 h) | 71.1° 14:40 | 11.5 | 88% | 139.7° |
| 2035-12-18 Tue | 30 | — | unknown | 18:35–19:40 (good, 1.08 h) | 71.1° 14:35 | 11.5 | 79% | 136.9° |
| 2035-12-19 Wed | 29 | — | unknown | 18:35–19:40 (good, 1.08 h) | 71.1° 14:30 | 11.51 | 69% | 130.8° |
| 2035-12-20 Thu | 27 | — | unknown | 18:35–19:35 (good, 1.0 h) | 71.1° 14:30 | 11.51 | 58% | 122.7° |
| 2035-12-21 Fri | 25 | — | unknown | 18:35–19:30 (good, 0.92 h) | 71.1° 14:25 | 11.51 | 47% | 113.6° |
| 2035-12-22 Sat | 24 | — | unknown | 18:35–19:25 (good, 0.83 h) | 71.1° 14:20 | 11.51 | 37% | 104.0° |
| 2035-12-23 Sun | 22 | — | unknown | 18:40–19:20 (good, 0.67 h) | 71.1° 14:15 | 11.51 | 28% | 94.4° |
| 2035-12-24 Mon | 20 | — | unknown | 18:40–19:20 (good, 0.67 h) | 71.1° 14:10 | 11.5 | 19% | 84.9° |
| 2035-12-25 Tue | 19 | — | unknown | 18:40–19:15 (good, 0.58 h) | 71.1° 14:10 | 11.5 | 12% | 75.7° |
| 2035-12-26 Wed | 18 | — | unknown | 18:40–19:10 (good, 0.5 h) | 71.1° 14:05 | 11.5 | 7% | 66.8° |
| 2035-12-27 Thu | 17 | — | unknown | 18:40–19:05 (good, 0.42 h) | 71.1° 14:00 | 11.49 | 3% | 58.6° |
| 2035-12-28 Fri | 15 | — | unknown | 18:40–19:00 (good, 0.33 h) | 71.1° 13:55 | 11.49 | 0% | 51.3° |
| 2035-12-29 Sat | 13 | — | unknown | 18:40–19:00 (good, 0.33 h) | 71.1° 13:50 | 11.48 | 0% | 45.5° |
| 2035-12-30 Sun | 11 | — | unknown | 18:40–18:55 (good, 0.25 h) | 71.1° 13:50 | 11.47 | 2% | 41.7° |
| 2035-12-31 Mon | 9 | — | unknown | 18:45–18:50 (good, 0.08 h) | 71.1° 13:45 | 11.46 | 5% | 40.4° |
| 2036-01-01 Tue | 7 | — | unknown | 18:10–19:15 (marginal, 1.08 h) | 71.1° 13:40 | 11.45 | 10% | 42.0° |
| 2036-01-02 Wed | 6 | — | unknown | 18:45–19:10 (marginal, 0.42 h) | 71.1° 13:35 | 11.44 | 16% | 46.1° |
| 2036-01-03 Thu | 5 | — | unknown | 18:45–19:05 (marginal, 0.33 h) | 71.1° 13:35 | 11.43 | 23% | 52.2° |
| 2036-01-04 Fri | 3 | — | unknown | 18:45–19:00 (marginal, 0.25 h) | 71.1° 13:30 | 11.42 | 32% | 59.9° |
| 2036-01-05 Sat | 3 | — | unknown | 18:45–19:00 (marginal, 0.25 h) | 71.1° 13:25 | 11.41 | 42% | 68.5° |
| 2036-01-06 Sun | 2 | — | unknown | 18:45–18:55 (marginal, 0.17 h) | 71.1° 13:20 | 11.39 | 52% | 78.0° |
| 2036-01-07 Mon | 1 | — | unknown | — | 71.1° 13:15 | 11.38 | 62% | 88.0° |
| 2036-01-08 Tue | 1 | — | unknown | — | 71.1° 13:15 | 11.36 | 73% | 98.4° |
| 2036-01-09 Wed | 1 | — | unknown | — | 71.1° 13:10 | 11.35 | 82% | 108.9° |
| 2036-01-10 Thu | 1 | — | unknown | — | 71.1° 13:05 | 11.33 | 90% | 119.2° |
| 2036-01-11 Fri | 1 | — | unknown | — | 71.1° 13:00 | 11.31 | 96% | 128.5° |
| 2036-01-12 Sat | 0 | — | unknown | — | 71.1° 12:55 | 11.29 | 100% | 135.7° |
| 2036-01-13 Sun | 0 | — | unknown | — | 71.1° 12:55 | 11.28 | 100% | 139.4° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2035-12-15&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.