← 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. |
|---|---|---|---|---|---|---|---|---|
| 2025-07-01 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° |
| 2025-07-16 Wed | 21 | 93 | 20 | 01:40–04:00 (marginal, 2.33 h) | 79.1° 07:15 | 5.05 | 62% | 28.5° |
| 2025-07-17 Thu | 29 | 61 | 18 | 01:20–04:00 (marginal, 2.67 h) | 79.1° 07:10 | 5.1 | 51% | 18.6° |
| 2025-07-18 Fri | 38 | 90 | 34 | 02:05–04:00 (good, 1.92 h) | 79.1° 07:05 | 5.14 | 40% | 16.4° |
| 2025-07-19 Sat | 48 | 100 | 48 | 01:50–04:05 (good, 2.25 h) | 79.1° 07:05 | 5.19 | 29% | 24.2° |
| 2025-07-20 Sun | 58 | 100 | 58 | 01:30–04:05 (good, 2.58 h) | 79.1° 07:00 | 5.24 | 19% | 36.1° |
| 2025-07-21 Mon | 68 | 100 | 68 | 01:30–04:10 (good, 2.67 h) | 79.1° 06:55 | 5.28 | 11% | 49.2° |
| 2025-07-22 Tue | 73 | 100 | 73 | 01:25–04:10 (good, 2.75 h) | 79.1° 06:50 | 5.33 | 5% | 62.7° |
| 2025-07-23 Wed | 77 | 100 | 77 | 01:20–04:10 (good, 2.83 h) | 79.1° 06:50 | 5.38 | 1% | 76.2° |
| 2025-07-24 Thu | 80 | 100 | 80 | 01:15–04:15 (good, 3.0 h) | 79.1° 06:45 | 5.43 | 0% | 89.5° |
| 2025-07-25 Fri | 82 | 100 | 82 | 01:15–04:15 (good, 3.0 h) | 79.1° 06:40 | 5.48 | 2% | 102.6° |
| 2025-07-26 Sat | 84 | 100 | 84 | 01:10–04:15 (good, 3.08 h) | 79.1° 06:35 | 5.54 | 5% | 115.3° |
| 2025-07-27 Sun | 89 | 94 | 84 | 01:05–04:20 (good, 3.25 h) | 79.1° 06:30 | 5.59 | 11% | 127.6° |
| 2025-07-28 Mon | 91 | 99 | 90 | 01:00–04:20 (good, 3.33 h) | 79.1° 06:30 | 5.64 | 18% | 139.2° |
| 2025-07-29 Tue | 92 | 99 | 91 | 01:00–04:20 (good, 3.33 h) | 79.1° 06:25 | 5.7 | 26% | 150.1° |
| 2025-07-30 Wed | 95 | 0 | 0 | — | 79.1° 06:20 | 5.75 | 35% | 159.2° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2025-07-01&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.