← 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. |
|---|---|---|---|---|---|---|---|---|
| 2029-06-18 Mon | 10 | — | unknown | 03:10–04:30 (marginal, 1.33 h) | 79.1° 09:05 | 4.43 | 44% | 137.1° |
| 2029-06-19 Tue | 11 | — | unknown | 03:35–03:40 (good, 0.08 h) | 79.1° 09:00 | 4.42 | 56% | 149.8° |
| 2029-06-20 Wed | 13 | — | unknown | 03:30–03:40 (good, 0.17 h) | 79.1° 09:00 | 4.42 | 67% | 160.8° |
| 2029-06-21 Thu | 14 | — | unknown | 03:25–03:40 (good, 0.25 h) | 79.1° 08:55 | 4.42 | 78% | 165.2° |
| 2029-06-22 Fri | 15 | — | unknown | 03:25–03:40 (good, 0.25 h) | 79.1° 08:50 | 4.43 | 87% | 158.1° |
| 2029-06-23 Sat | 15 | — | unknown | 03:25–03:40 (good, 0.25 h) | 79.1° 08:45 | 4.43 | 94% | 146.1° |
| 2029-06-24 Sun | 16 | — | unknown | 03:25–03:40 (good, 0.25 h) | 79.1° 08:40 | 4.44 | 98% | 132.9° |
| 2029-06-25 Mon | 17 | — | unknown | 03:20–03:40 (good, 0.33 h) | 79.1° 08:40 | 4.45 | 100% | 119.5° |
| 2029-06-26 Tue | 15 | — | unknown | 03:25–03:40 (good, 0.25 h) | 79.1° 08:35 | 4.46 | 99% | 106.1° |
| 2029-06-27 Wed | 13 | — | unknown | 03:35–03:40 (good, 0.08 h) | 79.1° 08:30 | 4.47 | 96% | 92.9° |
| 2029-06-28 Thu | 12 | — | unknown | 02:35–03:40 (marginal, 1.08 h) | 79.1° 08:25 | 4.49 | 91% | 80.1° |
| 2029-06-29 Fri | 11 | — | unknown | 02:35–03:40 (marginal, 1.08 h) | 79.1° 08:20 | 4.5 | 84% | 67.7° |
| 2029-06-30 Sat | 11 | — | unknown | 02:30–03:45 (marginal, 1.25 h) | 79.1° 08:20 | 4.52 | 76% | 55.7° |
| 2029-07-01 Sun | 12 | — | unknown | 02:25–03:45 (marginal, 1.33 h) | 79.1° 08:15 | 4.54 | 67% | 44.2° |
| 2029-07-02 Mon | 13 | — | unknown | 02:20–03:45 (marginal, 1.42 h) | 79.1° 08:10 | 4.57 | 58% | 33.2° |
| 2029-07-03 Tue | 16 | — | unknown | 02:10–03:45 (marginal, 1.58 h) | 79.1° 08:05 | 4.59 | 48% | 23.3° |
| 2029-07-04 Wed | 21 | — | unknown | 02:55–03:45 (good, 0.83 h) | 79.1° 08:05 | 4.62 | 39% | 16.0° |
| 2029-07-05 Thu | 26 | — | unknown | 02:45–03:50 (good, 1.08 h) | 79.1° 08:00 | 4.65 | 30% | 15.7° |
| 2029-07-06 Fri | 31 | — | unknown | 02:35–03:50 (good, 1.25 h) | 79.1° 07:55 | 4.68 | 21% | 22.7° |
| 2029-07-07 Sat | 36 | — | unknown | 02:25–03:50 (good, 1.42 h) | 79.1° 07:50 | 4.71 | 14% | 32.8° |
| 2029-07-08 Sun | 41 | — | unknown | 02:20–03:50 (good, 1.5 h) | 79.1° 07:45 | 4.74 | 8% | 44.1° |
| 2029-07-09 Mon | 44 | — | unknown | 02:15–03:50 (good, 1.58 h) | 79.1° 07:45 | 4.77 | 3% | 56.0° |
| 2029-07-10 Tue | 47 | — | unknown | 02:10–03:55 (good, 1.75 h) | 79.1° 07:40 | 4.81 | 1% | 68.4° |
| 2029-07-11 Wed | 48 | — | unknown | 02:10–03:55 (good, 1.75 h) | 79.1° 07:35 | 4.85 | 0% | 81.2° |
| 2029-07-12 Thu | 50 | — | unknown | 02:05–03:55 (good, 1.83 h) | 79.1° 07:30 | 4.89 | 2% | 94.2° |
| 2029-07-13 Fri | 52 | — | unknown | 02:00–03:55 (good, 1.92 h) | 79.1° 07:25 | 4.93 | 6% | 107.5° |
| 2029-07-14 Sat | 55 | — | unknown | 01:55–04:00 (good, 2.08 h) | 79.1° 07:25 | 4.97 | 13% | 120.8° |
| 2029-07-15 Sun | 57 | — | unknown | 01:50–04:00 (good, 2.17 h) | 79.1° 07:20 | 5.01 | 21% | 134.1° |
| 2029-07-16 Mon | 59 | — | unknown | 01:50–04:00 (good, 2.17 h) | 79.1° 07:15 | 5.05 | 31% | 147.0° |
| 2029-07-17 Tue | 62 | — | unknown | 01:45–04:05 (good, 2.33 h) | 79.1° 07:10 | 5.1 | 42% | 158.6° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2029-06-18&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.