Moon Phases Visible from パリ

From パリ at latitude 48.9°, the moon's appearance follows the same 29.53-day synodic cycle visible worldwide — all 8 phases from New Moon through Full Moon and back. However, パリ's high-latitude latitude affects the moon's maximum altitude in the sky. The moon can reach up to 69.7° altitude when crossing the meridian near summer solstice, and only 12.5° near winter solstice. This seasonal variation determines how high the moon appears above パリ's horizon and affects lunar photography planning.

1667年にルイ14世の命で設立されたパリ天文台は、世界最古の継続的に運用されている天文台です。アラゴ・メダリオン——パリの歩道に埋め込まれた135個の青銅製ディスク——は、1884年に国際子午線会議がロンドンに標準化することを決議するまで、グリニッジと世界の本初子午線の地位を競ったパリ子午線を今も示しています。

Moonrise & Moonset Times at パリ

The moon rises approximately 50 minutes later each day as seen from パリ. This daily delay occurs because the moon orbits Earth eastward at about 1 km/s, moving roughly 13° per day against the background stars. At パリ's latitude (48.9°), the moon's rise and set positions along the horizon shift seasonally — rising further north in summer and further south in winter. MoonSync calculates exact moonrise and moonset times for パリ using real-time ephemeris data.

北緯48.9度のパリでは、夏の日が16時間10分まで延びます——より低い中緯度のニューヨークや東京の15時間の最大値よりかなり長くなります。この延長された夏の日照は、パリの名高い8月の澄んだ空と相まって、ヨーロッパの主要首都の中でも最も長く最も写真映えするゴールデンアワーの時間帯を生み出します。

Moon Illumination & パリ's Dark-Sky Planning

For stargazing and astrophotography in パリ, moon illumination percentage is the critical number. A Full Moon (100% illuminated) washes out all but the brightest stars and makes deep-sky observation nearly impossible. The 7 days around New Moon (0-15% illumination) provide the best dark-sky window. At 48.9° latitude, combine moon phase with the Twilight Calculator to find nights when both astronomical darkness and minimal moonlight coincide — these 'astrophotographer's golden hours' occur roughly once per month at パリ.

Lunar Data Accuracy for パリ

MoonSync computes moon phase, illumination, moonrise/moonset times, and lunar age for パリ using real-time ephemeris data. Phase illumination is accurate to ±1%. Moonrise and moonset times are calculated from パリ's precise coordinates (48.9°, 2.4°) and corrected for atmospheric refraction. The Keplerian orbital model used achieves timing accuracy of approximately ±30 minutes over a synodic month. For sub-minute lunar event timing, consult the USNO Phases of the Moon data service.