← 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. |
|---|---|---|---|---|---|---|---|---|
| 2025-06-16 Mon | 4 | 100 | 4 | 03:20–03:40 (marginal, 0.33 h) | 79.1° 09:15 | 4.44 | 70% | 63.4° |
| 2025-06-17 Tue | 4 | 100 | 4 | 03:15–03:40 (marginal, 0.42 h) | 79.1° 09:10 | 4.43 | 60% | 50.6° |
| 2025-06-18 Wed | 6 | 100 | 6 | 03:10–03:40 (marginal, 0.5 h) | 79.1° 09:05 | 4.43 | 49% | 38.0° |
| 2025-06-19 Thu | 7 | 100 | 7 | 03:05–03:40 (marginal, 0.58 h) | 79.1° 09:00 | 4.42 | 37% | 26.0° |
| 2025-06-20 Fri | 9 | 89 | 8 | 03:05–03:40 (marginal, 0.58 h) | 79.1° 09:00 | 4.42 | 26% | 17.2° |
| 2025-06-21 Sat | 12 | 100 | 12 | 03:35–03:40 (good, 0.08 h) | 79.1° 08:55 | 4.42 | 17% | 17.9° |
| 2025-06-22 Sun | 14 | 100 | 14 | 03:25–03:40 (good, 0.25 h) | 79.1° 08:50 | 4.42 | 9% | 27.7° |
| 2025-06-23 Mon | 17 | 100 | 17 | 03:20–03:40 (good, 0.33 h) | 79.1° 08:45 | 4.43 | 3% | 40.4° |
| 2025-06-24 Tue | 19 | 100 | 19 | 03:15–03:40 (good, 0.42 h) | 79.1° 08:40 | 4.44 | 1% | 54.0° |
| 2025-06-25 Wed | 21 | 100 | 21 | 03:10–03:40 (good, 0.5 h) | 79.1° 08:40 | 4.45 | 0% | 67.7° |
| 2025-06-26 Thu | 22 | 100 | 22 | 03:05–03:40 (good, 0.58 h) | 79.1° 08:35 | 4.46 | 3% | 81.3° |
| 2025-06-27 Fri | 23 | 48 | 11 | 02:35–03:40 (marginal, 1.08 h) | 79.1° 08:30 | 4.47 | 8% | 94.6° |
| 2025-06-28 Sat | 25 | 49 | 12 | 02:45–04:00 (marginal, 1.25 h) | 79.1° 08:25 | 4.48 | 15% | 107.5° |
| 2025-06-29 Sun | 27 | 100 | 27 | 02:55–03:40 (good, 0.75 h) | 79.1° 08:20 | 4.5 | 23% | 119.9° |
| 2025-06-30 Mon | 29 | 89 | 26 | 02:55–03:45 (good, 0.83 h) | 79.1° 08:20 | 4.52 | 32% | 131.8° |
| 2025-07-01 Tue | 30 | 100 | 30 | 02:50–03:45 (good, 0.92 h) | 79.1° 08:15 | 4.54 | 42% | 143.0° |
| 2025-07-02 Wed | 31 | 100 | 31 | 02:45–03:45 (good, 1.0 h) | 79.1° 08:10 | 4.56 | 51% | 153.3° |
| 2025-07-03 Thu | 33 | 100 | 33 | 02:40–03:45 (good, 1.08 h) | 79.1° 08:05 | 4.59 | 61% | 161.4° |
| 2025-07-04 Fri | 35 | 100 | 35 | 02:35–03:45 (good, 1.17 h) | 79.1° 08:05 | 4.62 | 70% | 163.9° |
| 2025-07-05 Sat | 37 | 100 | 37 | 02:30–03:50 (good, 1.33 h) | 79.1° 08:00 | 4.64 | 78% | 159.0° |
| 2025-07-06 Sun | 38 | 100 | 38 | 02:30–03:50 (good, 1.33 h) | 79.1° 07:55 | 4.67 | 85% | 150.0° |
| 2025-07-07 Mon | 39 | 100 | 39 | 02:30–03:50 (good, 1.33 h) | 79.1° 07:50 | 4.7 | 91% | 139.4° |
| 2025-07-08 Tue | 36 | 100 | 36 | 02:30–03:50 (good, 1.33 h) | 79.1° 07:45 | 4.74 | 96% | 128.1° |
| 2025-07-09 Wed | 35 | 100 | 35 | 02:25–03:50 (good, 1.42 h) | 79.1° 07:45 | 4.77 | 99% | 116.3° |
| 2025-07-10 Thu | 32 | 79 | 25 | 03:00–03:55 (good, 0.92 h) | 79.1° 07:40 | 4.81 | 100% | 104.1° |
| 2025-07-11 Fri | 27 | 78 | 21 | 02:00–03:55 (marginal, 1.92 h) | 79.1° 07:35 | 4.85 | 99% | 91.7° |
| 2025-07-12 Sat | 23 | 97 | 22 | 03:40–03:55 (good, 0.25 h) | 79.1° 07:30 | 4.88 | 95% | 79.0° |
| 2025-07-13 Sun | 20 | 47 | 9 | 03:00–03:55 (marginal, 0.92 h) | 79.1° 07:25 | 4.92 | 90% | 66.2° |
| 2025-07-14 Mon | 19 | 100 | 19 | 01:40–04:00 (marginal, 2.33 h) | 79.1° 07:25 | 4.97 | 82% | 53.3° |
| 2025-07-15 Tue | 19 | 93 | 18 | 01:40–04:00 (marginal, 2.33 h) | 79.1° 07:20 | 5.01 | 73% | 40.6° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2025-06-16&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.