← 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. |
|---|---|---|---|---|---|---|---|---|
| 2043-03-22 Sun | 32 | — | unknown | 03:30–04:50 (good, 1.33 h) | 71.1° 08:20 | 8.62 | 93% | 130.0° |
| 2043-03-23 Mon | 31 | — | unknown | 03:25–04:45 (good, 1.33 h) | 71.1° 08:15 | 8.57 | 97% | 125.2° |
| 2043-03-24 Tue | 31 | — | unknown | 03:25–04:45 (good, 1.33 h) | 71.1° 08:15 | 8.52 | 100% | 118.9° |
| 2043-03-25 Wed | 29 | — | unknown | 03:25–04:45 (good, 1.33 h) | 71.1° 08:10 | 8.47 | 100% | 111.7° |
| 2043-03-26 Thu | 27 | — | unknown | 03:25–04:40 (good, 1.25 h) | 71.1° 08:05 | 8.41 | 98% | 103.9° |
| 2043-03-27 Fri | 25 | — | unknown | 03:25–04:40 (good, 1.25 h) | 71.1° 08:00 | 8.36 | 95% | 95.9° |
| 2043-03-28 Sat | 24 | — | unknown | 04:30–05:35 (good, 1.08 h) | 71.1° 08:55 | 8.31 | 90% | 87.7° |
| 2043-03-29 Sun | 24 | — | unknown | 04:30–05:35 (good, 1.08 h) | 71.1° 08:55 | 8.25 | 84% | 79.7° |
| 2043-03-30 Mon | 25 | — | unknown | 04:20–05:35 (good, 1.25 h) | 71.1° 08:50 | 8.2 | 76% | 71.9° |
| 2043-03-31 Tue | 26 | — | unknown | 04:10–05:30 (good, 1.33 h) | 71.1° 08:45 | 8.14 | 68% | 64.5° |
| 2043-04-01 Wed | 28 | — | unknown | 04:00–05:30 (good, 1.5 h) | 71.1° 08:40 | 8.09 | 58% | 57.8° |
| 2043-04-02 Thu | 33 | — | unknown | 03:35–05:30 (good, 1.92 h) | 71.1° 08:40 | 8.03 | 49% | 52.2° |
| 2043-04-03 Fri | 41 | — | unknown | 03:35–05:25 (good, 1.83 h) | 71.1° 08:35 | 7.98 | 38% | 48.3° |
| 2043-04-04 Sat | 46 | — | unknown | 03:30–05:25 (good, 1.92 h) | 71.1° 08:30 | 7.92 | 29% | 46.7° |
| 2043-04-05 Sun | 49 | — | unknown | 03:25–05:20 (good, 1.92 h) | 71.1° 08:25 | 7.87 | 19% | 47.9° |
| 2043-04-06 Mon | 50 | — | unknown | 03:20–05:20 (good, 2.0 h) | 71.1° 08:20 | 7.81 | 11% | 52.0° |
| 2043-04-07 Tue | 52 | — | unknown | 03:15–05:20 (good, 2.08 h) | 71.1° 08:20 | 7.76 | 5% | 58.6° |
| 2043-04-08 Wed | 52 | — | unknown | 03:15–05:15 (good, 2.0 h) | 71.1° 08:15 | 7.7 | 1% | 67.1° |
| 2043-04-09 Thu | 54 | — | unknown | 03:10–05:15 (good, 2.08 h) | 71.1° 08:10 | 7.64 | 0% | 76.7° |
| 2043-04-10 Fri | 53 | — | unknown | 03:05–05:10 (good, 2.08 h) | 71.1° 08:05 | 7.59 | 2% | 87.0° |
| 2043-04-11 Sat | 55 | — | unknown | 03:00–05:10 (good, 2.17 h) | 71.1° 08:00 | 7.53 | 7% | 97.3° |
| 2043-04-12 Sun | 56 | — | unknown | 02:55–05:10 (good, 2.25 h) | 71.1° 08:00 | 7.47 | 14% | 107.3° |
| 2043-04-13 Mon | 56 | — | unknown | 02:55–05:05 (good, 2.17 h) | 71.1° 07:55 | 7.41 | 23% | 116.3° |
| 2043-04-14 Tue | 58 | — | unknown | 02:50–05:05 (good, 2.25 h) | 71.1° 07:50 | 7.36 | 34% | 123.9° |
| 2043-04-15 Wed | 58 | — | unknown | 02:50–05:00 (good, 2.17 h) | 71.1° 07:45 | 7.3 | 45% | 129.6° |
| 2043-04-16 Thu | 58 | — | unknown | 02:45–05:00 (good, 2.25 h) | 71.1° 07:45 | 7.24 | 55% | 132.7° |
| 2043-04-17 Fri | 59 | — | unknown | 02:45–05:00 (good, 2.25 h) | 71.1° 07:40 | 7.18 | 66% | 133.2° |
| 2043-04-18 Sat | 58 | — | unknown | 02:40–04:55 (good, 2.25 h) | 71.1° 07:35 | 7.13 | 75% | 130.9° |
| 2043-04-19 Sun | 54 | — | unknown | 02:40–04:55 (good, 2.25 h) | 71.1° 07:30 | 7.07 | 83% | 126.5° |
| 2043-04-20 Mon | 52 | — | unknown | 02:35–04:50 (good, 2.25 h) | 71.1° 07:25 | 7.01 | 90% | 120.6° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2043-03-22&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.