← 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. |
|---|---|---|---|---|---|---|---|---|
| 2031-12-27 Sat | 13 | — | unknown | 18:40–18:55 (good, 0.25 h) | 71.1° 14:00 | 11.49 | 99% | 126.2° |
| 2031-12-28 Sun | 12 | — | unknown | 18:40–18:55 (good, 0.25 h) | 71.1° 13:55 | 11.49 | 100% | 133.6° |
| 2031-12-29 Mon | 11 | — | unknown | 18:40–18:50 (good, 0.17 h) | 71.1° 13:50 | 11.48 | 98% | 139.3° |
| 2031-12-30 Tue | 11 | — | unknown | 18:40–18:55 (good, 0.25 h) | 71.1° 13:50 | 11.47 | 96% | 142.4° |
| 2031-12-31 Wed | 9 | — | unknown | 18:45–18:50 (good, 0.08 h) | 71.1° 13:45 | 11.46 | 91% | 142.5° |
| 2032-01-01 Thu | 8 | — | unknown | 18:10–19:15 (marginal, 1.08 h) | 71.1° 13:40 | 11.45 | 85% | 139.5° |
| 2032-01-02 Fri | 7 | — | unknown | 18:10–19:10 (marginal, 1.0 h) | 71.1° 13:35 | 11.44 | 77% | 134.1° |
| 2032-01-03 Sat | 6 | — | unknown | 18:10–18:40 (marginal, 0.5 h) | 71.1° 13:35 | 11.43 | 69% | 126.8° |
| 2032-01-04 Sun | 5 | — | unknown | 18:10–18:35 (marginal, 0.42 h) | 71.1° 13:30 | 11.42 | 60% | 118.4° |
| 2032-01-05 Mon | 4 | — | unknown | 18:45–19:00 (marginal, 0.25 h) | 71.1° 13:25 | 11.41 | 50% | 109.0° |
| 2032-01-06 Tue | 3 | — | unknown | 18:45–18:55 (marginal, 0.17 h) | 71.1° 13:20 | 11.39 | 40% | 99.1° |
| 2032-01-07 Wed | 2 | — | unknown | 18:15–18:25 (marginal, 0.17 h) | 71.1° 13:15 | 11.38 | 30% | 88.6° |
| 2032-01-08 Thu | 1 | — | unknown | 18:15–18:20 (marginal, 0.08 h) | 71.1° 13:15 | 11.36 | 20% | 77.7° |
| 2032-01-09 Fri | 1 | — | unknown | — | 71.1° 13:10 | 11.35 | 12% | 66.8° |
| 2032-01-10 Sat | 1 | — | unknown | — | 71.1° 13:05 | 11.33 | 5% | 56.2° |
| 2032-01-11 Sun | 1 | — | unknown | — | 71.1° 13:00 | 11.31 | 1% | 46.8° |
| 2032-01-12 Mon | 1 | — | unknown | — | 71.1° 12:55 | 11.3 | 0% | 39.9° |
| 2032-01-13 Tue | 0 | — | unknown | — | 71.1° 12:55 | 11.28 | 2% | 37.2° |
| 2032-01-14 Wed | 0 | — | unknown | — | 71.1° 12:50 | 11.26 | 7% | 39.6° |
| 2032-01-15 Thu | 0 | — | unknown | — | 71.1° 12:45 | 11.23 | 14% | 46.3° |
| 2032-01-16 Fri | 0 | — | unknown | — | 71.1° 12:40 | 11.21 | 23% | 55.2° |
| 2032-01-17 Sat | 0 | — | unknown | — | 71.1° 12:35 | 11.19 | 33% | 65.3° |
| 2032-01-18 Sun | 0 | — | unknown | — | 71.1° 12:35 | 11.17 | 44% | 75.8° |
| 2032-01-19 Mon | 0 | — | unknown | — | 71.1° 12:30 | 11.14 | 55% | 86.2° |
| 2032-01-20 Tue | 0 | — | unknown | — | 71.1° 12:25 | 11.12 | 65% | 96.4° |
| 2032-01-21 Wed | 0 | — | unknown | — | 71.1° 12:20 | 11.09 | 74% | 106.3° |
| 2032-01-22 Thu | 0 | — | unknown | — | 71.1° 12:20 | 11.07 | 82% | 115.7° |
| 2032-01-23 Fri | 0 | — | unknown | — | 71.1° 12:15 | 11.04 | 89% | 124.3° |
| 2032-01-24 Sat | 0 | — | unknown | — | 71.1° 12:10 | 11.01 | 94% | 132.0° |
| 2032-01-25 Sun | 0 | — | unknown | — | 71.1° 12:05 | 10.99 | 98% | 138.0° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2031-12-27&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.