← 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. |
|---|---|---|---|---|---|---|---|---|
| 2036-07-12 Sat | 1 | — | unknown | — | 72.5° 09:45 | 4.9 | 83% | 80.3° |
| 2036-07-13 Sun | 1 | — | unknown | — | 72.5° 09:40 | 4.94 | 75% | 68.5° |
| 2036-07-14 Mon | 1 | — | unknown | — | 72.5° 09:35 | 4.98 | 66% | 56.5° |
| 2036-07-15 Tue | 1 | — | unknown | — | 72.5° 09:30 | 5.02 | 57% | 44.4° |
| 2036-07-16 Wed | 2 | — | unknown | 03:55–04:00 (marginal, 0.08 h) | 72.5° 09:25 | 5.07 | 47% | 32.2° |
| 2036-07-17 Thu | 3 | — | unknown | 03:50–04:05 (marginal, 0.25 h) | 72.5° 09:25 | 5.11 | 36% | 20.1° |
| 2036-07-18 Fri | 5 | — | unknown | 04:25–04:50 (marginal, 0.42 h) | 72.5° 09:20 | 5.16 | 26% | 10.3° |
| 2036-07-19 Sat | 7 | — | unknown | 04:15–04:55 (marginal, 0.67 h) | 72.5° 09:15 | 5.2 | 17% | 13.2° |
| 2036-07-20 Sun | 9 | — | unknown | 03:40–04:55 (marginal, 1.25 h) | 72.5° 09:10 | 5.25 | 9% | 25.5° |
| 2036-07-21 Mon | 11 | — | unknown | 04:00–04:10 (good, 0.17 h) | 72.5° 09:05 | 5.3 | 3% | 39.5° |
| 2036-07-22 Tue | 13 | — | unknown | 04:00–04:10 (good, 0.17 h) | 72.5° 09:05 | 5.35 | 0% | 54.2° |
| 2036-07-23 Wed | 15 | — | unknown | 03:55–04:10 (good, 0.25 h) | 72.5° 09:00 | 5.4 | 0% | 69.2° |
| 2036-07-24 Thu | 18 | — | unknown | 03:50–04:15 (good, 0.42 h) | 72.5° 08:55 | 5.45 | 3% | 84.2° |
| 2036-07-25 Fri | 19 | — | unknown | 03:45–04:15 (good, 0.5 h) | 72.5° 08:50 | 5.5 | 9% | 99.0° |
| 2036-07-26 Sat | 21 | — | unknown | 03:40–04:15 (good, 0.58 h) | 72.5° 08:50 | 5.56 | 17% | 113.5° |
| 2036-07-27 Sun | 24 | — | unknown | 03:40–04:20 (good, 0.67 h) | 72.5° 08:45 | 5.61 | 27% | 127.5° |
| 2036-07-28 Mon | 25 | — | unknown | 03:35–04:20 (good, 0.75 h) | 72.5° 08:40 | 5.66 | 37% | 140.9° |
| 2036-07-29 Tue | 26 | — | unknown | 03:30–04:20 (good, 0.83 h) | 72.5° 08:35 | 5.72 | 48% | 153.7° |
| 2036-07-30 Wed | 28 | — | unknown | 03:25–04:25 (good, 1.0 h) | 72.5° 08:30 | 5.77 | 58% | 165.0° |
| 2036-07-31 Thu | 30 | — | unknown | 03:20–04:25 (good, 1.08 h) | 72.5° 08:30 | 5.82 | 68% | 170.7° |
| 2036-08-01 Fri | 32 | — | unknown | 03:20–04:25 (good, 1.08 h) | 72.5° 08:25 | 5.88 | 77% | 163.9° |
| 2036-08-02 Sat | 35 | — | unknown | 03:15–04:30 (good, 1.25 h) | 72.5° 08:20 | 5.94 | 85% | 153.0° |
| 2036-08-03 Sun | 35 | — | unknown | 03:15–04:30 (good, 1.25 h) | 72.5° 08:15 | 5.99 | 91% | 141.5° |
| 2036-08-04 Mon | 32 | — | unknown | 03:15–04:30 (good, 1.25 h) | 72.5° 08:10 | 6.05 | 96% | 129.9° |
| 2036-08-05 Tue | 33 | — | unknown | 03:15–04:35 (good, 1.33 h) | 72.5° 08:10 | 6.1 | 99% | 118.3° |
| 2036-08-06 Wed | 29 | — | unknown | 03:15–04:35 (good, 1.33 h) | 72.5° 08:05 | 6.16 | 100% | 106.6° |
| 2036-08-07 Thu | 25 | — | unknown | 03:25–04:35 (good, 1.17 h) | 72.5° 08:00 | 6.22 | 99% | 95.0° |
| 2036-08-08 Fri | 22 | — | unknown | 04:20–04:40 (good, 0.33 h) | 72.5° 07:55 | 6.27 | 97% | 83.2° |
| 2036-08-09 Sat | 19 | — | unknown | 02:30–04:40 (marginal, 2.17 h) | 72.5° 07:55 | 6.33 | 93% | 71.4° |
| 2036-08-10 Sun | 16 | — | unknown | 02:30–04:40 (marginal, 2.17 h) | 72.5° 07:50 | 6.39 | 87% | 59.6° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2036-07-12&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.