← 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. |
|---|---|---|---|---|---|---|---|---|
| 2031-07-03 Thu | 3 | — | unknown | 23:10–23:20 (marginal, 0.17 h) | 50.2° 19:05 | 4.58 | 99% | 83.5° |
| 2031-07-04 Fri | 3 | — | unknown | 23:10–23:20 (marginal, 0.17 h) | 50.2° 19:00 | 4.6 | 100% | 98.5° |
| 2031-07-05 Sat | 4 | — | unknown | 22:20–22:40 (marginal, 0.33 h) | 50.2° 19:00 | 4.63 | 98% | 113.6° |
| 2031-07-06 Sun | 3 | — | unknown | 22:20–22:40 (marginal, 0.33 h) | 50.2° 18:55 | 4.66 | 93% | 128.4° |
| 2031-07-07 Mon | 3 | — | unknown | 22:15–22:40 (marginal, 0.42 h) | 50.2° 18:50 | 4.69 | 86% | 142.8° |
| 2031-07-08 Tue | 3 | — | unknown | 22:15–22:40 (marginal, 0.42 h) | 50.2° 18:45 | 4.72 | 77% | 156.4° |
| 2031-07-09 Wed | 3 | — | unknown | 22:15–22:35 (marginal, 0.33 h) | 50.2° 18:40 | 4.76 | 66% | 168.1° |
| 2031-07-10 Thu | 2 | — | unknown | 22:15–22:30 (marginal, 0.25 h) | 50.2° 18:40 | 4.79 | 56% | 169.8° |
| 2031-07-11 Fri | 2 | — | unknown | 22:15–22:25 (marginal, 0.17 h) | 50.2° 18:35 | 4.83 | 45% | 159.8° |
| 2031-07-12 Sat | 2 | — | unknown | 22:15–22:20 (marginal, 0.08 h) | 50.2° 18:30 | 4.87 | 36% | 147.9° |
| 2031-07-13 Sun | 2 | — | unknown | 22:15–22:20 (marginal, 0.08 h) | 50.2° 18:25 | 4.91 | 26% | 136.0° |
| 2031-07-14 Mon | 2 | — | unknown | 22:10–22:15 (marginal, 0.08 h) | 50.2° 18:25 | 4.95 | 18% | 124.0° |
| 2031-07-15 Tue | 1 | — | unknown | — | 50.2° 18:20 | 4.99 | 12% | 112.2° |
| 2031-07-16 Wed | 1 | — | unknown | — | 50.2° 18:15 | 5.03 | 6% | 100.5° |
| 2031-07-17 Thu | 1 | — | unknown | — | 50.2° 18:10 | 5.08 | 2% | 88.8° |
| 2031-07-18 Fri | 1 | — | unknown | — | 50.2° 18:05 | 5.12 | 0% | 77.1° |
| 2031-07-19 Sat | 1 | — | unknown | — | 50.2° 18:05 | 5.17 | 0% | 65.4° |
| 2031-07-20 Sun | 1 | — | unknown | — | 50.2° 18:00 | 5.21 | 2% | 53.7° |
| 2031-07-21 Mon | 1 | — | unknown | — | 50.2° 17:55 | 5.26 | 5% | 42.0° |
| 2031-07-22 Tue | 0 | — | unknown | — | 50.2° 17:50 | 5.31 | 10% | 30.3° |
| 2031-07-23 Wed | 0 | — | unknown | — | 50.2° 17:45 | 5.36 | 17% | 18.9° |
| 2031-07-24 Thu | 0 | — | unknown | — | 50.2° 17:45 | 5.41 | 25% | 9.7° |
| 2031-07-25 Fri | 0 | — | unknown | — | 50.2° 17:40 | 5.46 | 34% | 11.9° |
| 2031-07-26 Sat | 0 | — | unknown | — | 50.2° 17:35 | 5.51 | 45% | 22.8° |
| 2031-07-27 Sun | 0 | — | unknown | — | 50.2° 17:30 | 5.57 | 55% | 35.5° |
| 2031-07-28 Mon | 0 | — | unknown | — | 50.2° 17:30 | 5.62 | 66% | 48.9° |
| 2031-07-29 Tue | 0 | — | unknown | — | 50.2° 17:25 | 5.67 | 77% | 62.8° |
| 2031-07-30 Wed | 0 | — | unknown | — | 50.2° 17:20 | 5.73 | 86% | 77.2° |
| 2031-07-31 Thu | 0 | — | unknown | — | 50.2° 17:15 | 5.78 | 93% | 92.0° |
| 2031-08-01 Fri | 0 | — | unknown | — | 50.2° 17:10 | 5.84 | 98% | 106.9° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2031-07-03&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.