← 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. |
|---|---|---|---|---|---|---|---|---|
| 2036-03-27 Thu | 49 | — | unknown | 02:40–04:40 (good, 2.0 h) | 87.2° 08:55 | 8.32 | 0% | 65.4° |
| 2036-03-28 Fri | 50 | — | unknown | 02:35–04:35 (good, 2.0 h) | 87.2° 08:50 | 8.27 | 1% | 70.5° |
| 2036-03-29 Sat | 50 | — | unknown | 02:35–05:35 (good, 2.0 h) | 87.2° 09:50 | 8.21 | 5% | 76.5° |
| 2036-03-30 Sun | 50 | — | unknown | 03:30–05:30 (good, 2.0 h) | 87.2° 09:45 | 8.16 | 10% | 83.2° |
| 2036-03-31 Mon | 52 | — | unknown | 03:25–05:30 (good, 2.08 h) | 87.2° 09:40 | 8.11 | 18% | 90.3° |
| 2036-04-01 Tue | 54 | — | unknown | 03:20–05:30 (good, 2.17 h) | 87.2° 09:35 | 8.05 | 27% | 97.5° |
| 2036-04-02 Wed | 54 | — | unknown | 03:15–05:25 (good, 2.17 h) | 87.2° 09:30 | 8.0 | 38% | 104.4° |
| 2036-04-03 Thu | 55 | — | unknown | 03:15–05:25 (good, 2.17 h) | 87.2° 09:30 | 7.94 | 49% | 110.7° |
| 2036-04-04 Fri | 54 | — | unknown | 03:15–05:20 (good, 2.08 h) | 87.2° 09:25 | 7.88 | 61% | 115.9° |
| 2036-04-05 Sat | 54 | — | unknown | 03:15–05:20 (good, 2.08 h) | 87.2° 09:20 | 7.83 | 72% | 119.6° |
| 2036-04-06 Sun | 55 | — | unknown | 03:10–05:20 (good, 2.17 h) | 87.2° 09:15 | 7.77 | 81% | 121.4° |
| 2036-04-07 Mon | 48 | — | unknown | 03:10–05:15 (good, 2.08 h) | 87.2° 09:15 | 7.72 | 89% | 121.1° |
| 2036-04-08 Tue | 47 | — | unknown | 03:10–05:15 (good, 2.08 h) | 87.2° 09:10 | 7.66 | 95% | 118.7° |
| 2036-04-09 Wed | 45 | — | unknown | 03:10–05:15 (good, 2.08 h) | 87.2° 09:05 | 7.6 | 99% | 114.5° |
| 2036-04-10 Thu | 41 | — | unknown | 03:10–05:10 (good, 2.0 h) | 87.2° 09:00 | 7.55 | 100% | 109.1° |
| 2036-04-11 Fri | 39 | — | unknown | 03:10–05:10 (good, 2.0 h) | 87.2° 08:55 | 7.49 | 98% | 102.8° |
| 2036-04-12 Sat | 36 | — | unknown | 03:10–05:05 (good, 1.92 h) | 87.2° 08:55 | 7.43 | 95% | 96.2° |
| 2036-04-13 Sun | 35 | — | unknown | 03:10–05:05 (good, 1.92 h) | 87.2° 08:50 | 7.38 | 89% | 89.5° |
| 2036-04-14 Mon | 36 | — | unknown | 03:05–05:05 (good, 2.0 h) | 87.2° 08:45 | 7.32 | 82% | 83.0° |
| 2036-04-15 Tue | 37 | — | unknown | 02:55–05:00 (good, 2.08 h) | 87.2° 08:40 | 7.26 | 74% | 76.9° |
| 2036-04-16 Wed | 40 | — | unknown | 02:45–05:00 (good, 2.25 h) | 87.2° 08:35 | 7.2 | 66% | 71.3° |
| 2036-04-17 Thu | 44 | — | unknown | 02:35–04:55 (good, 2.33 h) | 87.2° 08:35 | 7.14 | 56% | 66.5° |
| 2036-04-18 Fri | 53 | — | unknown | 02:15–04:55 (good, 2.67 h) | 87.2° 08:30 | 7.09 | 47% | 62.6° |
| 2036-04-19 Sat | 60 | — | unknown | 02:10–04:55 (good, 2.75 h) | 87.2° 08:25 | 7.03 | 37% | 59.9° |
| 2036-04-20 Sun | 66 | — | unknown | 02:05–04:50 (good, 2.75 h) | 87.2° 08:20 | 6.97 | 28% | 58.6° |
| 2036-04-21 Mon | 70 | — | unknown | 02:05–04:50 (good, 2.75 h) | 87.2° 08:20 | 6.91 | 20% | 58.8° |
| 2036-04-22 Tue | 71 | — | unknown | 02:00–04:45 (good, 2.75 h) | 87.2° 08:15 | 6.85 | 13% | 60.6° |
| 2036-04-23 Wed | 73 | — | unknown | 01:55–04:45 (good, 2.83 h) | 87.2° 08:10 | 6.8 | 7% | 63.9° |
| 2036-04-24 Thu | 74 | — | unknown | 01:50–04:45 (good, 2.92 h) | 87.2° 08:05 | 6.74 | 3% | 68.6° |
| 2036-04-25 Fri | 75 | — | unknown | 01:45–04:40 (good, 2.92 h) | 87.2° 08:00 | 6.68 | 0% | 74.4° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2036-03-27&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.