← 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. |
|---|---|---|---|---|---|---|---|---|
| 2042-07-08 Tue | 0 | — | unknown | — | 72.5° 10:00 | 4.73 | 65% | 60.3° |
| 2042-07-09 Wed | 0 | — | unknown | — | 72.5° 09:55 | 4.77 | 54% | 46.1° |
| 2042-07-10 Thu | 1 | — | unknown | — | 72.5° 09:55 | 4.8 | 42% | 31.9° |
| 2042-07-11 Fri | 1 | — | unknown | — | 72.5° 09:50 | 4.84 | 31% | 17.8° |
| 2042-07-12 Sat | 1 | — | unknown | — | 72.6° 09:45 | 4.88 | 21% | 3.9° |
| 2042-07-13 Sun | 2 | — | unknown | 04:40–04:45 (marginal, 0.08 h) | 72.5° 09:40 | 4.92 | 13% | 10.2° |
| 2042-07-14 Mon | 2 | — | unknown | 04:35–04:45 (marginal, 0.17 h) | 72.5° 09:35 | 4.96 | 6% | 23.9° |
| 2042-07-15 Tue | 3 | — | unknown | 04:25–04:50 (marginal, 0.42 h) | 72.5° 09:35 | 5.0 | 2% | 37.5° |
| 2042-07-16 Wed | 4 | — | unknown | 04:25–04:50 (marginal, 0.42 h) | 72.5° 09:30 | 5.05 | 0% | 50.8° |
| 2042-07-17 Thu | 5 | — | unknown | 04:20–04:50 (marginal, 0.5 h) | 72.6° 09:25 | 5.09 | 1% | 63.9° |
| 2042-07-18 Fri | 6 | — | unknown | 04:15–04:50 (marginal, 0.58 h) | 72.5° 09:20 | 5.14 | 3% | 76.7° |
| 2042-07-19 Sat | 7 | — | unknown | 04:10–04:55 (marginal, 0.75 h) | 72.5° 09:15 | 5.18 | 8% | 89.2° |
| 2042-07-20 Sun | 8 | — | unknown | 03:40–04:55 (marginal, 1.25 h) | 72.5° 09:15 | 5.23 | 14% | 101.5° |
| 2042-07-21 Mon | 11 | — | unknown | 04:05–04:10 (good, 0.08 h) | 72.5° 09:10 | 5.28 | 21% | 113.6° |
| 2042-07-22 Tue | 12 | — | unknown | 04:00–04:10 (good, 0.17 h) | 72.5° 09:05 | 5.33 | 29% | 125.6° |
| 2042-07-23 Wed | 14 | — | unknown | 03:55–04:10 (good, 0.25 h) | 72.5° 09:00 | 5.38 | 38% | 137.4° |
| 2042-07-24 Thu | 17 | — | unknown | 03:50–04:15 (good, 0.42 h) | 72.5° 09:00 | 5.43 | 47% | 149.3° |
| 2042-07-25 Fri | 19 | — | unknown | 03:50–04:15 (good, 0.42 h) | 72.5° 08:55 | 5.48 | 57% | 161.2° |
| 2042-07-26 Sat | 20 | — | unknown | 03:45–04:15 (good, 0.5 h) | 72.6° 08:50 | 5.53 | 66% | 173.2° |
| 2042-07-27 Sun | 22 | — | unknown | 03:40–04:20 (good, 0.67 h) | 72.5° 08:45 | 5.58 | 75% | 174.3° |
| 2042-07-28 Mon | 24 | — | unknown | 03:35–04:20 (good, 0.75 h) | 72.5° 08:40 | 5.64 | 84% | 161.7° |
| 2042-07-29 Tue | 25 | — | unknown | 03:30–04:20 (good, 0.83 h) | 72.5° 08:40 | 5.69 | 90% | 148.7° |
| 2042-07-30 Wed | 27 | — | unknown | 03:35–04:25 (good, 0.83 h) | 72.5° 08:35 | 5.74 | 96% | 135.3° |
| 2042-07-31 Thu | 25 | — | unknown | 03:35–04:25 (good, 0.83 h) | 72.6° 08:30 | 5.8 | 99% | 121.6° |
| 2042-08-01 Fri | 22 | — | unknown | 03:35–04:25 (good, 0.83 h) | 72.5° 08:25 | 5.85 | 100% | 107.5° |
| 2042-08-02 Sat | 18 | — | unknown | 03:50–04:25 (good, 0.58 h) | 72.5° 08:20 | 5.91 | 98% | 93.2° |
| 2042-08-03 Sun | 15 | — | unknown | 02:50–04:30 (marginal, 1.67 h) | 72.5° 08:20 | 5.97 | 93% | 78.7° |
| 2042-08-04 Mon | 13 | — | unknown | 02:55–04:30 (marginal, 1.58 h) | 72.5° 08:15 | 6.02 | 86% | 64.1° |
| 2042-08-05 Tue | 12 | — | unknown | 02:55–04:30 (marginal, 1.58 h) | 72.6° 08:10 | 6.08 | 77% | 49.6° |
| 2042-08-06 Wed | 12 | — | unknown | 02:50–04:35 (marginal, 1.75 h) | 72.5° 08:05 | 6.13 | 67% | 35.2° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2042-07-08&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.