← 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. |
|---|---|---|---|---|---|---|---|---|
| 2026-06-30 Tue | 0 | 80 | 0 | — | 72.5° 10:30 | 4.52 | 99% | 130.5° |
| 2026-07-01 Wed | 0 | 33 | 0 | — | 72.5° 10:30 | 4.54 | 96% | 118.4° |
| 2026-07-02 Thu | 0 | 86 | 0 | — | 72.5° 10:25 | 4.56 | 92% | 106.3° |
| 2026-07-03 Fri | 0 | 61 | 0 | — | 72.5° 10:20 | 4.58 | 86% | 94.0° |
| 2026-07-04 Sat | 0 | 94 | 0 | — | 72.5° 10:15 | 4.61 | 78% | 81.5° |
| 2026-07-05 Sun | 0 | 96 | 0 | — | 72.5° 10:10 | 4.64 | 70% | 68.7° |
| 2026-07-06 Mon | 0 | 95 | 0 | — | 72.5° 10:10 | 4.67 | 59% | 55.7° |
| 2026-07-07 Tue | 0 | 99 | 0 | — | 72.5° 10:05 | 4.7 | 49% | 42.3° |
| 2026-07-08 Wed | 0 | 0 | 0 | — | 72.5° 10:00 | 4.73 | 38% | 28.6° |
| 2026-07-09 Thu | 1 | 96 | 1 | — | 72.5° 09:55 | 4.76 | 27% | 14.4° |
| 2026-07-10 Fri | 1 | 100 | 1 | — | 72.5° 09:50 | 4.8 | 17% | 1.0° |
| 2026-07-11 Sat | 1 | 100 | 1 | — | 72.5° 09:50 | 4.84 | 9% | 14.9° |
| 2026-07-12 Sun | 2 | 99 | 2 | 04:40–04:45 (marginal, 0.08 h) | 72.5° 09:45 | 4.87 | 3% | 30.0° |
| 2026-07-13 Mon | 2 | 92 | 2 | — | 72.5° 09:40 | 4.91 | 0% | 45.0° |
| 2026-07-14 Tue | 2 | 99 | 2 | 04:30–04:45 (marginal, 0.25 h) | 72.5° 09:35 | 4.96 | 0% | 60.0° |
| 2026-07-15 Wed | 3 | 94 | 3 | 04:30–04:50 (marginal, 0.33 h) | 72.5° 09:35 | 5.0 | 3% | 74.8° |
| 2026-07-16 Thu | 4 | 83 | 3 | 04:30–04:50 (marginal, 0.33 h) | 72.5° 09:30 | 5.04 | 9% | 89.2° |
| 2026-07-17 Fri | 5 | 99 | 5 | 04:20–04:50 (marginal, 0.5 h) | 72.5° 09:25 | 5.08 | 16% | 103.2° |
| 2026-07-18 Sat | 6 | 77 | 5 | 03:50–04:05 (marginal, 0.25 h) | 72.5° 09:20 | 5.13 | 25% | 116.8° |
| 2026-07-19 Sun | 7 | 99 | 7 | 04:10–04:55 (marginal, 0.75 h) | 72.5° 09:15 | 5.18 | 35% | 129.8° |
| 2026-07-20 Mon | 8 | 96 | 8 | 03:40–04:55 (marginal, 1.25 h) | 72.5° 09:15 | 5.22 | 45% | 142.5° |
| 2026-07-21 Tue | 11 | 61 | 7 | 04:20–04:55 (marginal, 0.58 h) | 72.5° 09:10 | 5.27 | 55% | 154.8° |
| 2026-07-22 Wed | 12 | 99 | 12 | 04:00–04:10 (good, 0.17 h) | 72.5° 09:05 | 5.32 | 64% | 166.9° |
| 2026-07-23 Thu | 13 | 33 | 4 | 03:30–04:00 (marginal, 0.5 h) | 72.5° 09:00 | 5.37 | 73% | 178.5° |
| 2026-07-24 Fri | 17 | 0 | 0 | — | 72.5° 08:55 | 5.42 | 81% | 169.2° |
| 2026-07-25 Sat | 19 | 92 | 17 | 03:55–04:15 (good, 0.33 h) | 72.5° 08:55 | 5.47 | 88% | 157.4° |
| 2026-07-26 Sun | 20 | 75 | 15 | 03:55–04:00 (good, 0.08 h) | 72.5° 08:50 | 5.52 | 93% | 145.5° |
| 2026-07-27 Mon | 19 | 98 | 19 | 03:50–04:20 (good, 0.5 h) | 72.5° 08:45 | 5.58 | 97% | 133.6° |
| 2026-07-28 Tue | 20 | 83 | 17 | 03:10–04:20 (marginal, 1.17 h) | 72.5° 08:40 | 5.63 | 100% | 121.6° |
| 2026-07-29 Wed | 18 | 100 | 18 | 03:50–04:20 (good, 0.5 h) | 72.5° 08:40 | 5.68 | 100% | 109.3° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2026-06-30&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.