← 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. |
|---|---|---|---|---|---|---|---|---|
| 2036-07-08 Tue | 26 | — | unknown | 02:45–03:50 (good, 1.08 h) | 79.2° 07:45 | 4.75 | 100% | 99.5° |
| 2036-07-09 Wed | 24 | — | unknown | 03:10–03:55 (good, 0.75 h) | 79.1° 07:40 | 4.79 | 98% | 88.7° |
| 2036-07-10 Thu | 21 | — | unknown | 01:50–04:45 (marginal, 2.92 h) | 79.1° 07:40 | 4.82 | 95% | 77.9° |
| 2036-07-11 Fri | 19 | — | unknown | 01:45–03:55 (marginal, 2.17 h) | 79.2° 07:35 | 4.86 | 90% | 67.2° |
| 2036-07-12 Sat | 18 | — | unknown | 01:45–03:55 (marginal, 2.17 h) | 79.2° 07:30 | 4.9 | 83% | 56.8° |
| 2036-07-13 Sun | 19 | — | unknown | 01:40–04:00 (marginal, 2.33 h) | 79.1° 07:25 | 4.94 | 75% | 46.6° |
| 2036-07-14 Mon | 21 | — | unknown | 01:30–04:00 (marginal, 2.5 h) | 79.1° 07:25 | 4.98 | 66% | 37.1° |
| 2036-07-15 Tue | 26 | — | unknown | 01:25–04:00 (marginal, 2.58 h) | 79.1° 07:20 | 5.02 | 57% | 29.2° |
| 2036-07-16 Wed | 32 | — | unknown | 02:10–04:00 (good, 1.83 h) | 79.2° 07:15 | 5.07 | 47% | 24.7° |
| 2036-07-17 Thu | 42 | — | unknown | 02:00–04:05 (good, 2.08 h) | 79.2° 07:10 | 5.11 | 36% | 26.0° |
| 2036-07-18 Fri | 51 | — | unknown | 01:40–04:05 (good, 2.42 h) | 79.1° 07:05 | 5.16 | 26% | 32.9° |
| 2036-07-19 Sat | 61 | — | unknown | 01:35–04:05 (good, 2.5 h) | 79.1° 07:05 | 5.2 | 17% | 43.1° |
| 2036-07-20 Sun | 69 | — | unknown | 01:30–04:10 (good, 2.67 h) | 79.2° 07:00 | 5.25 | 9% | 55.1° |
| 2036-07-21 Mon | 72 | — | unknown | 01:30–04:10 (good, 2.67 h) | 79.2° 06:55 | 5.3 | 3% | 68.1° |
| 2036-07-22 Tue | 74 | — | unknown | 01:25–04:10 (good, 2.75 h) | 79.2° 06:50 | 5.35 | 0% | 81.7° |
| 2036-07-23 Wed | 78 | — | unknown | 01:20–04:10 (good, 2.83 h) | 79.1° 06:45 | 5.4 | 0% | 95.5° |
| 2036-07-24 Thu | 81 | — | unknown | 01:15–04:15 (good, 3.0 h) | 79.1° 06:45 | 5.45 | 3% | 109.3° |
| 2036-07-25 Fri | 83 | — | unknown | 01:10–04:15 (good, 3.08 h) | 79.2° 06:40 | 5.5 | 9% | 122.6° |
| 2036-07-26 Sat | 85 | — | unknown | 01:10–04:15 (good, 3.08 h) | 79.2° 06:35 | 5.56 | 17% | 135.0° |
| 2036-07-27 Sun | 89 | — | unknown | 01:05–04:20 (good, 3.25 h) | 79.1° 06:30 | 5.61 | 27% | 145.7° |
| 2036-07-28 Mon | 91 | — | unknown | 01:00–04:20 (good, 3.33 h) | 79.1° 06:25 | 5.66 | 37% | 153.3° |
| 2036-07-29 Tue | 93 | — | unknown | 00:55–04:20 (good, 3.42 h) | 79.1° 06:25 | 5.72 | 48% | 155.4° |
| 2036-07-30 Wed | 94 | — | unknown | 00:55–04:25 (good, 3.5 h) | 79.2° 06:20 | 5.77 | 58% | 151.3° |
| 2036-07-31 Thu | 96 | — | unknown | 00:55–04:25 (good, 3.5 h) | 79.2° 06:15 | 5.82 | 68% | 143.4° |
| 2036-08-01 Fri | 97 | — | unknown | 00:50–04:25 (good, 3.58 h) | 79.1° 06:10 | 5.88 | 77% | 133.8° |
| 2036-08-02 Sat | 98 | — | unknown | 00:50–04:30 (good, 3.67 h) | 79.1° 06:10 | 5.94 | 85% | 123.5° |
| 2036-08-03 Sun | 95 | — | unknown | 00:50–04:30 (good, 3.67 h) | 79.2° 06:05 | 5.99 | 91% | 112.9° |
| 2036-08-04 Mon | 77 | — | unknown | 00:55–04:30 (good, 3.58 h) | 79.2° 06:00 | 6.05 | 96% | 102.2° |
| 2036-08-05 Tue | 66 | — | unknown | 01:10–04:35 (good, 3.42 h) | 79.2° 05:55 | 6.1 | 99% | 91.4° |
| 2036-08-06 Wed | 54 | — | unknown | 02:10–04:35 (good, 2.42 h) | 79.1° 05:50 | 6.16 | 100% | 80.6° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2036-07-08&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.