← 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. |
|---|---|---|---|---|---|---|---|---|
| 2043-06-07 Sun | 2 | — | unknown | 04:25–04:30 (marginal, 0.08 h) | 79.2° 09:50 | 4.61 | 0% | 51.4° |
| 2043-06-08 Mon | 2 | — | unknown | 04:20–04:30 (marginal, 0.17 h) | 79.2° 09:45 | 4.58 | 4% | 65.4° |
| 2043-06-09 Tue | 3 | — | unknown | 04:15–04:30 (marginal, 0.25 h) | 79.2° 09:45 | 4.56 | 9% | 79.2° |
| 2043-06-10 Wed | 3 | — | unknown | 04:10–04:30 (marginal, 0.33 h) | 79.2° 09:40 | 4.54 | 16% | 92.7° |
| 2043-06-11 Thu | 3 | — | unknown | 04:10–04:30 (marginal, 0.33 h) | 79.2° 09:35 | 4.52 | 25% | 105.7° |
| 2043-06-12 Fri | 4 | — | unknown | 04:05–04:30 (marginal, 0.42 h) | 79.2° 09:30 | 4.5 | 35% | 118.2° |
| 2043-06-13 Sat | 5 | — | unknown | 04:00–04:30 (marginal, 0.5 h) | 79.2° 09:30 | 4.48 | 45% | 130.1° |
| 2043-06-14 Sun | 6 | — | unknown | 03:55–04:30 (marginal, 0.58 h) | 79.2° 09:25 | 4.47 | 55% | 141.3° |
| 2043-06-15 Mon | 6 | — | unknown | 03:50–04:30 (marginal, 0.67 h) | 79.2° 09:20 | 4.45 | 64% | 151.6° |
| 2043-06-16 Tue | 7 | — | unknown | 03:50–04:30 (marginal, 0.67 h) | 79.2° 09:15 | 4.44 | 73% | 159.8° |
| 2043-06-17 Wed | 8 | — | unknown | 03:45–04:30 (marginal, 0.75 h) | 79.2° 09:10 | 4.43 | 81% | 163.0° |
| 2043-06-18 Thu | 9 | — | unknown | 03:10–04:30 (marginal, 1.33 h) | 79.2° 09:10 | 4.43 | 88% | 159.0° |
| 2043-06-19 Fri | 9 | — | unknown | 03:10–04:30 (marginal, 1.33 h) | 79.2° 09:05 | 4.42 | 93% | 150.6° |
| 2043-06-20 Sat | 10 | — | unknown | 03:05–04:30 (marginal, 1.42 h) | 79.2° 09:00 | 4.42 | 97% | 140.4° |
| 2043-06-21 Sun | 11 | — | unknown | 03:35–03:40 (good, 0.08 h) | 79.2° 08:55 | 4.42 | 99% | 129.5° |
| 2043-06-22 Mon | 12 | — | unknown | 03:35–03:40 (good, 0.08 h) | 79.2° 08:50 | 4.42 | 100% | 118.1° |
| 2043-06-23 Tue | 11 | — | unknown | 02:50–04:30 (marginal, 1.67 h) | 79.2° 08:50 | 4.43 | 98% | 106.4° |
| 2043-06-24 Wed | 10 | — | unknown | 02:50–04:30 (marginal, 1.67 h) | 79.2° 08:45 | 4.43 | 94% | 94.5° |
| 2043-06-25 Thu | 10 | — | unknown | 02:45–03:40 (marginal, 0.92 h) | 79.2° 08:40 | 4.44 | 89% | 82.4° |
| 2043-06-26 Fri | 10 | — | unknown | 02:45–03:40 (marginal, 0.92 h) | 79.2° 08:35 | 4.45 | 82% | 70.1° |
| 2043-06-27 Sat | 10 | — | unknown | 02:40–03:40 (marginal, 1.0 h) | 79.2° 08:30 | 4.47 | 73% | 57.6° |
| 2043-06-28 Sun | 11 | — | unknown | 02:35–03:40 (marginal, 1.08 h) | 79.2° 08:30 | 4.48 | 63% | 45.2° |
| 2043-06-29 Mon | 13 | — | unknown | 02:30–03:40 (marginal, 1.17 h) | 79.2° 08:25 | 4.5 | 52% | 33.1° |
| 2043-06-30 Tue | 17 | — | unknown | 03:15–03:45 (good, 0.5 h) | 79.2° 08:20 | 4.51 | 41% | 22.4° |
| 2043-07-01 Wed | 21 | — | unknown | 03:05–03:45 (good, 0.67 h) | 79.2° 08:15 | 4.53 | 30% | 16.8° |
| 2043-07-02 Thu | 25 | — | unknown | 02:55–03:45 (good, 0.83 h) | 79.2° 08:15 | 4.56 | 20% | 21.6° |
| 2043-07-03 Fri | 29 | — | unknown | 02:40–03:45 (good, 1.08 h) | 79.2° 08:10 | 4.58 | 11% | 32.7° |
| 2043-07-04 Sat | 34 | — | unknown | 02:35–03:45 (good, 1.17 h) | 79.2° 08:05 | 4.61 | 5% | 45.8° |
| 2043-07-05 Sun | 35 | — | unknown | 02:35–03:45 (good, 1.17 h) | 79.2° 08:00 | 4.63 | 1% | 59.5° |
| 2043-07-06 Mon | 38 | — | unknown | 02:30–03:50 (good, 1.33 h) | 79.2° 07:55 | 4.66 | 0% | 73.4° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2043-06-07&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.