← 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. |
|---|---|---|---|---|---|---|---|---|
| 2027-10-31 Sun | 0 | — | unknown | — | 50.2° 10:10 | 10.46 | 6% | 62.2° |
| 2027-11-01 Mon | 0 | — | unknown | — | 50.2° 10:05 | 10.49 | 12% | 74.8° |
| 2027-11-02 Tue | 0 | — | unknown | — | 50.2° 10:00 | 10.53 | 20% | 87.1° |
| 2027-11-03 Wed | 1 | — | unknown | — | 50.2° 10:00 | 10.57 | 28% | 99.2° |
| 2027-11-04 Thu | 1 | — | unknown | — | 50.2° 09:55 | 10.6 | 37% | 111.1° |
| 2027-11-05 Fri | 1 | — | unknown | — | 50.2° 09:50 | 10.64 | 46% | 122.8° |
| 2027-11-06 Sat | 1 | — | unknown | — | 50.2° 09:45 | 10.67 | 56% | 134.3° |
| 2027-11-07 Sun | 2 | — | unknown | 05:25–05:30 (marginal, 0.08 h) | 50.2° 09:40 | 10.7 | 65% | 145.8° |
| 2027-11-08 Mon | 3 | — | unknown | 05:50–06:00 (marginal, 0.17 h) | 50.2° 09:40 | 10.74 | 74% | 157.1° |
| 2027-11-09 Tue | 4 | — | unknown | 05:50–06:05 (marginal, 0.25 h) | 50.2° 09:35 | 10.77 | 82% | 167.3° |
| 2027-11-10 Wed | 4 | — | unknown | 05:15–05:30 (marginal, 0.25 h) | 50.2° 09:30 | 10.8 | 89% | 170.2° |
| 2027-11-11 Thu | 6 | — | unknown | 05:10–05:35 (marginal, 0.42 h) | 50.2° 09:25 | 10.83 | 94% | 161.3° |
| 2027-11-12 Fri | 6 | — | unknown | 05:10–05:35 (marginal, 0.42 h) | 50.2° 09:25 | 10.86 | 98% | 149.3° |
| 2027-11-13 Sat | 6 | — | unknown | 05:05–05:35 (marginal, 0.5 h) | 50.2° 09:20 | 10.89 | 100% | 136.4° |
| 2027-11-14 Sun | 7 | — | unknown | 05:00–05:35 (marginal, 0.58 h) | 50.2° 09:15 | 10.92 | 99% | 123.0° |
| 2027-11-15 Mon | 7 | — | unknown | 04:55–05:35 (marginal, 0.67 h) | 50.2° 09:10 | 10.95 | 96% | 109.3° |
| 2027-11-16 Tue | 7 | — | unknown | 04:55–05:40 (marginal, 0.75 h) | 50.2° 09:05 | 10.98 | 90% | 95.3° |
| 2027-11-17 Wed | 6 | — | unknown | 04:55–05:40 (marginal, 0.75 h) | 50.2° 09:05 | 11.01 | 83% | 81.3° |
| 2027-11-18 Thu | 6 | — | unknown | 04:55–05:40 (marginal, 0.75 h) | 50.2° 09:00 | 11.04 | 73% | 67.3° |
| 2027-11-19 Fri | 7 | — | unknown | 04:50–05:40 (marginal, 0.83 h) | 50.2° 08:55 | 11.06 | 63% | 53.3° |
| 2027-11-20 Sat | 9 | — | unknown | 04:45–05:40 (marginal, 0.92 h) | 50.2° 08:50 | 11.09 | 51% | 39.5° |
| 2027-11-21 Sun | 12 | — | unknown | 04:35–05:45 (marginal, 1.17 h) | 50.2° 08:45 | 11.11 | 40% | 26.1° |
| 2027-11-22 Mon | 15 | — | unknown | 05:15–05:45 (good, 0.5 h) | 50.2° 08:45 | 11.14 | 29% | 14.0° |
| 2027-11-23 Tue | 20 | — | unknown | 05:00–05:45 (good, 0.75 h) | 50.2° 08:40 | 11.16 | 20% | 9.8° |
| 2027-11-24 Wed | 24 | — | unknown | 04:55–05:45 (good, 0.83 h) | 50.2° 08:35 | 11.19 | 12% | 19.3° |
| 2027-11-25 Thu | 28 | — | unknown | 04:45–05:45 (good, 1.0 h) | 50.2° 08:30 | 11.21 | 6% | 31.8° |
| 2027-11-26 Fri | 29 | — | unknown | 04:40–05:50 (good, 1.17 h) | 50.2° 08:30 | 11.23 | 2% | 44.7° |
| 2027-11-27 Sat | 31 | — | unknown | 04:35–05:50 (good, 1.25 h) | 50.2° 08:25 | 11.25 | 0% | 57.6° |
| 2027-11-28 Sun | 33 | — | unknown | 04:35–05:50 (good, 1.25 h) | 50.2° 08:20 | 11.27 | 1% | 70.3° |
| 2027-11-29 Mon | 35 | — | unknown | 04:30–05:50 (good, 1.33 h) | 50.2° 08:15 | 11.29 | 3% | 82.8° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2027-10-31&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.