← 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. |
|---|---|---|---|---|---|---|---|---|
| 2033-12-16 Fri | 32 | — | unknown | 18:35–19:50 (good, 1.25 h) | 71.1° 14:40 | 11.5 | 21% | 94.7° |
| 2033-12-17 Sat | 31 | — | unknown | 18:35–19:45 (good, 1.17 h) | 71.1° 14:35 | 11.5 | 14% | 85.2° |
| 2033-12-18 Sun | 29 | — | unknown | 18:35–19:40 (good, 1.08 h) | 71.1° 14:35 | 11.5 | 8% | 75.8° |
| 2033-12-19 Mon | 28 | — | unknown | 18:35–19:35 (good, 1.0 h) | 71.1° 14:30 | 11.51 | 4% | 66.5° |
| 2033-12-20 Tue | 27 | — | unknown | 18:35–19:30 (good, 0.92 h) | 71.1° 14:25 | 11.51 | 1% | 57.6° |
| 2033-12-21 Wed | 25 | — | unknown | 18:35–19:30 (good, 0.92 h) | 71.1° 14:20 | 11.51 | 0% | 49.4° |
| 2033-12-22 Thu | 23 | — | unknown | 18:35–19:25 (good, 0.83 h) | 71.1° 14:20 | 11.51 | 2% | 42.8° |
| 2033-12-23 Fri | 20 | — | unknown | 18:40–19:20 (good, 0.67 h) | 71.1° 14:15 | 11.5 | 5% | 38.6° |
| 2033-12-24 Sat | 18 | — | unknown | 18:40–19:10 (good, 0.5 h) | 71.1° 14:10 | 11.5 | 11% | 38.1° |
| 2033-12-25 Sun | 16 | — | unknown | 18:40–19:05 (good, 0.42 h) | 71.1° 14:05 | 11.5 | 18% | 41.4° |
| 2033-12-26 Mon | 13 | — | unknown | 18:40–18:55 (good, 0.25 h) | 71.1° 14:00 | 11.49 | 28% | 47.9° |
| 2033-12-27 Tue | 10 | — | unknown | 18:40–18:45 (good, 0.08 h) | 71.1° 14:00 | 11.49 | 38% | 56.6° |
| 2033-12-28 Wed | 8 | — | unknown | 18:40–19:30 (marginal, 0.83 h) | 71.1° 13:55 | 11.48 | 49% | 66.6° |
| 2033-12-29 Thu | 7 | — | unknown | 18:40–19:25 (marginal, 0.75 h) | 71.1° 13:50 | 11.48 | 60% | 77.4° |
| 2033-12-30 Fri | 6 | — | unknown | 18:40–19:20 (marginal, 0.67 h) | 71.1° 13:45 | 11.47 | 71% | 88.6° |
| 2033-12-31 Sat | 5 | — | unknown | 18:45–19:15 (marginal, 0.5 h) | 71.1° 13:40 | 11.46 | 81% | 99.9° |
| 2034-01-01 Sun | 5 | — | unknown | 18:45–19:10 (marginal, 0.42 h) | 71.1° 13:40 | 11.45 | 89% | 110.9° |
| 2034-01-02 Mon | 5 | — | unknown | 18:45–19:10 (marginal, 0.42 h) | 71.1° 13:35 | 11.44 | 95% | 121.4° |
| 2034-01-03 Tue | 4 | — | unknown | 18:45–19:05 (marginal, 0.33 h) | 71.1° 13:30 | 11.43 | 99% | 130.5° |
| 2034-01-04 Wed | 3 | — | unknown | 18:45–19:00 (marginal, 0.25 h) | 71.1° 13:25 | 11.41 | 100% | 137.6° |
| 2034-01-05 Thu | 3 | — | unknown | 18:45–18:55 (marginal, 0.17 h) | 71.1° 13:25 | 11.4 | 98% | 141.6° |
| 2034-01-06 Fri | 2 | — | unknown | 18:15–18:25 (marginal, 0.17 h) | 71.1° 13:20 | 11.39 | 95% | 141.7° |
| 2034-01-07 Sat | 2 | — | unknown | 18:15–18:20 (marginal, 0.08 h) | 71.1° 13:15 | 11.37 | 89% | 138.1° |
| 2034-01-08 Sun | 1 | — | unknown | — | 71.1° 13:10 | 11.36 | 82% | 131.9° |
| 2034-01-09 Mon | 1 | — | unknown | — | 71.1° 13:05 | 11.34 | 74% | 124.2° |
| 2034-01-10 Tue | 1 | — | unknown | — | 71.1° 13:05 | 11.32 | 65% | 115.7° |
| 2034-01-11 Wed | 1 | — | unknown | — | 71.1° 13:00 | 11.3 | 56% | 106.7° |
| 2034-01-12 Thu | 0 | — | unknown | — | 71.1° 12:55 | 11.29 | 46% | 97.5° |
| 2034-01-13 Fri | 0 | — | unknown | — | 71.1° 12:50 | 11.27 | 37% | 88.2° |
| 2034-01-14 Sat | 0 | — | unknown | — | 71.1° 12:45 | 11.24 | 28% | 78.8° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2033-12-16&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.