← 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. |
|---|---|---|---|---|---|---|---|---|
| 2030-03-12 Tue | 30 | — | unknown | 04:00–05:05 (good, 1.08 h) | 71.1° 09:00 | 9.12 | 56% | 125.1° |
| 2030-03-13 Wed | 31 | — | unknown | 03:55–05:05 (good, 1.17 h) | 71.1° 08:55 | 9.07 | 65% | 132.4° |
| 2030-03-14 Thu | 32 | — | unknown | 03:50–05:05 (good, 1.25 h) | 71.1° 08:50 | 9.02 | 74% | 138.2° |
| 2030-03-15 Fri | 31 | — | unknown | 03:50–05:00 (good, 1.17 h) | 71.1° 08:45 | 8.97 | 83% | 141.4° |
| 2030-03-16 Sat | 31 | — | unknown | 03:50–05:00 (good, 1.17 h) | 71.1° 08:45 | 8.92 | 90% | 140.9° |
| 2030-03-17 Sun | 29 | — | unknown | 03:45–05:00 (good, 1.25 h) | 71.1° 08:40 | 8.87 | 96% | 136.7° |
| 2030-03-18 Mon | 29 | — | unknown | 03:45–04:55 (good, 1.17 h) | 71.1° 08:35 | 8.82 | 99% | 129.4° |
| 2030-03-19 Tue | 29 | — | unknown | 03:40–04:55 (good, 1.25 h) | 71.1° 08:30 | 8.77 | 100% | 120.0° |
| 2030-03-20 Wed | 26 | — | unknown | 03:45–04:50 (good, 1.08 h) | 71.1° 08:30 | 8.72 | 98% | 109.3° |
| 2030-03-21 Thu | 24 | — | unknown | 03:45–04:50 (good, 1.08 h) | 71.1° 08:25 | 8.67 | 93% | 97.9° |
| 2030-03-22 Fri | 22 | — | unknown | 03:45–04:50 (good, 1.08 h) | 71.1° 08:20 | 8.62 | 86% | 86.4° |
| 2030-03-23 Sat | 21 | — | unknown | 03:55–04:45 (good, 0.83 h) | 71.1° 08:15 | 8.56 | 77% | 75.0° |
| 2030-03-24 Sun | 22 | — | unknown | 03:40–04:45 (good, 1.08 h) | 71.1° 08:10 | 8.51 | 66% | 64.2° |
| 2030-03-25 Mon | 24 | — | unknown | 03:30–04:45 (good, 1.25 h) | 71.1° 08:10 | 8.46 | 55% | 54.5° |
| 2030-03-26 Tue | 27 | — | unknown | 03:20–04:40 (good, 1.33 h) | 71.1° 08:05 | 8.41 | 44% | 46.3° |
| 2030-03-27 Wed | 32 | — | unknown | 03:00–04:40 (good, 1.67 h) | 71.1° 08:00 | 8.35 | 34% | 40.6° |
| 2030-03-28 Thu | 37 | — | unknown | 02:55–04:35 (good, 1.67 h) | 71.1° 07:55 | 8.3 | 24% | 38.3° |
| 2030-03-29 Fri | 42 | — | unknown | 02:50–04:35 (good, 1.75 h) | 71.1° 07:50 | 8.24 | 16% | 39.7° |
| 2030-03-30 Sat | 45 | — | unknown | 02:45–05:35 (good, 1.83 h) | 71.1° 08:50 | 8.19 | 9% | 44.4° |
| 2030-03-31 Sun | 45 | — | unknown | 03:45–05:30 (good, 1.75 h) | 71.1° 08:45 | 8.14 | 4% | 51.2° |
| 2030-04-01 Mon | 47 | — | unknown | 03:40–05:30 (good, 1.83 h) | 71.1° 08:40 | 8.08 | 1% | 59.4° |
| 2030-04-02 Tue | 46 | — | unknown | 03:35–05:25 (good, 1.83 h) | 71.1° 08:35 | 8.03 | 0% | 68.3° |
| 2030-04-03 Wed | 48 | — | unknown | 03:30–05:25 (good, 1.92 h) | 71.1° 08:35 | 7.97 | 1% | 77.5° |
| 2030-04-04 Thu | 50 | — | unknown | 03:30–05:25 (good, 1.92 h) | 71.1° 08:30 | 7.91 | 4% | 86.9° |
| 2030-04-05 Fri | 50 | — | unknown | 03:25–05:20 (good, 1.92 h) | 71.1° 08:25 | 7.86 | 8% | 96.2° |
| 2030-04-06 Sat | 51 | — | unknown | 03:20–05:20 (good, 2.0 h) | 71.1° 08:20 | 7.8 | 14% | 105.4° |
| 2030-04-07 Sun | 52 | — | unknown | 03:15–05:20 (good, 2.08 h) | 71.1° 08:15 | 7.75 | 21% | 114.3° |
| 2030-04-08 Mon | 52 | — | unknown | 03:10–05:15 (good, 2.08 h) | 71.1° 08:15 | 7.69 | 29% | 122.7° |
| 2030-04-09 Tue | 54 | — | unknown | 03:10–05:15 (good, 2.08 h) | 71.1° 08:10 | 7.63 | 38% | 130.4° |
| 2030-04-10 Wed | 54 | — | unknown | 03:05–05:10 (good, 2.08 h) | 71.1° 08:05 | 7.58 | 48% | 136.7° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2030-03-12&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.