← 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. |
|---|---|---|---|---|---|---|---|---|
| 2025-06-22 Sun | 100 | 100 | 100 | 23:15–03:40 (good, 4.42 h) | 87.1° 01:55 | 4.42 | 9% | 104.2° |
| 2025-06-23 Mon | 100 | 100 | 100 | 23:15–03:40 (good, 4.42 h) | 87.1° 01:50 | 4.43 | 3% | 108.6° |
| 2025-06-24 Tue | 100 | 100 | 100 | 23:15–03:40 (good, 4.42 h) | 87.1° 01:45 | 4.44 | 1% | 111.8° |
| 2025-06-25 Wed | 100 | 100 | 100 | 23:15–03:40 (good, 4.42 h) | 87.1° 01:40 | 4.45 | 0% | 113.5° |
| 2025-06-26 Thu | 100 | 100 | 100 | 23:15–03:40 (good, 4.42 h) | 87.1° 01:40 | 4.46 | 3% | 113.6° |
| 2025-06-27 Fri | 100 | 78 | 78 | 23:15–03:40 (good, 4.42 h) | 87.1° 01:35 | 4.47 | 8% | 112.3° |
| 2025-06-28 Sat | 100 | 37 | 37 | 03:00–03:40 (good, 0.67 h) | 87.1° 01:30 | 4.48 | 15% | 109.8° |
| 2025-06-29 Sun | 100 | 100 | 100 | 23:10–03:40 (good, 4.5 h) | 87.1° 01:25 | 4.5 | 23% | 106.3° |
| 2025-06-30 Mon | 100 | 94 | 94 | 23:10–03:45 (good, 4.58 h) | 87.1° 01:20 | 4.52 | 32% | 102.2° |
| 2025-07-01 Tue | 100 | 87 | 87 | 00:00–03:45 (good, 3.75 h) | 87.1° 01:20 | 4.54 | 42% | 97.7° |
| 2025-07-02 Wed | 100 | 100 | 100 | 23:10–03:45 (good, 4.58 h) | 87.1° 01:15 | 4.56 | 51% | 92.9° |
| 2025-07-03 Thu | 100 | 100 | 100 | 23:10–03:45 (good, 4.58 h) | 87.1° 01:10 | 4.59 | 61% | 88.1° |
| 2025-07-04 Fri | 100 | 100 | 100 | 23:10–03:45 (good, 4.58 h) | 87.1° 01:05 | 4.62 | 70% | 83.4° |
| 2025-07-05 Sat | 100 | 100 | 100 | 23:10–03:50 (good, 4.67 h) | 87.1° 01:00 | 4.64 | 78% | 79.0° |
| 2025-07-06 Sun | 100 | 99 | 99 | 23:10–03:50 (good, 4.67 h) | 87.1° 01:00 | 4.67 | 85% | 74.9° |
| 2025-07-07 Mon | 100 | 99 | 99 | 23:10–03:50 (good, 4.67 h) | 87.1° 00:55 | 4.7 | 91% | 71.4° |
| 2025-07-08 Tue | 73 | 100 | 73 | 23:05–03:50 (good, 4.75 h) | 87.1° 00:50 | 4.74 | 96% | 68.7° |
| 2025-07-09 Wed | 66 | 99 | 65 | 23:05–03:50 (good, 4.75 h) | 87.1° 00:45 | 4.77 | 99% | 66.9° |
| 2025-07-10 Thu | 63 | 81 | 51 | 00:00–01:00 (good, 1.0 h) | 87.1° 00:45 | 4.81 | 100% | 66.2° |
| 2025-07-11 Fri | 65 | 40 | 26 | 02:00–03:55 (marginal, 1.92 h) | 87.1° 00:40 | 4.85 | 99% | 66.8° |
| 2025-07-12 Sat | 71 | 86 | 61 | 02:00–03:55 (good, 1.92 h) | 87.1° 00:35 | 4.88 | 95% | 68.7° |
| 2025-07-13 Sun | 77 | 46 | 35 | 00:00–01:00 (marginal, 1.0 h) | 87.1° 00:30 | 4.92 | 90% | 71.7° |
| 2025-07-14 Mon | 100 | 100 | 100 | 23:00–04:00 (good, 5.0 h) | 87.1° 00:25 | 4.97 | 82% | 75.8° |
| 2025-07-15 Tue | 100 | 90 | 90 | 23:00–04:00 (good, 5.0 h) | 87.1° 00:25 | 5.01 | 73% | 80.7° |
| 2025-07-16 Wed | 100 | 87 | 87 | 23:00–04:00 (good, 5.0 h) | 87.1° 00:20 | 5.05 | 62% | 86.1° |
| 2025-07-17 Thu | 100 | 50 | 50 | 00:00–03:00 (good, 3.0 h) | 87.1° 00:15 | 5.1 | 51% | 91.7° |
| 2025-07-18 Fri | 100 | 93 | 93 | 22:55–04:00 (good, 5.08 h) | 87.1° 00:10 | 5.14 | 40% | 97.3° |
| 2025-07-19 Sat | 100 | 100 | 100 | 22:55–04:05 (good, 5.17 h) | 87.1° 00:05 | 5.19 | 29% | 102.6° |
| 2025-07-20 Sun | 100 | 100 | 100 | 22:55–04:05 (good, 5.17 h) | 87.1° 00:05 | 5.24 | 19% | 107.2° |
| 2025-07-21 Mon | 100 | 100 | 100 | 22:50–04:10 (good, 5.33 h) | 87.1° 00:00 | 5.28 | 11% | 110.7° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2025-06-22&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.