Moon Phases Visible from 台北

From 台北 at latitude 25.0°, 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, 台北's mid-latitude latitude affects the moon's maximum altitude in the sky. The moon can reach up to 93.6° altitude when crossing the meridian near summer solstice, and only 36.4° near winter solstice. This seasonal variation determines how high the moon appears above 台北's horizon and affects lunar photography planning.

台北は北緯25度の北回帰線近くに位置し、夏至には太陽が正確に高度90°に達し、正午に影がなくなる緯度です。市立自然科学博物館は太陽の天頂通過を追跡する専用の太陽観測所を運営しており、嘉義の北回帰線標識は毎年6月に「無影日」現象を目撃しようと数千人の訪問者を集めます。

Moonrise & Moonset Times at 台北

The moon rises approximately 50 minutes later each day as seen from 台北. 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 台北's latitude (25.0°), 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 台北 using real-time ephemeris data.

北緯25度の台北では、夏と冬の日照時間差は約3.5時間と、東アジアの首都の中で最も小さくなります。この赤道への近さは、ゴールデンアワーが高緯度地域よりも年間を通じて安定していることを意味し、太陽がより急な角度で昇り沈むため、台北の狭い路地文化に鮮明で劇的な影を落とします。

Moon Illumination & 台北's Dark-Sky Planning

For stargazing and astrophotography in 台北, 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 25.0° 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 台北.

Lunar Data Accuracy for 台北

MoonSync computes moon phase, illumination, moonrise/moonset times, and lunar age for 台北 using real-time ephemeris data. Phase illumination is accurate to ±1%. Moonrise and moonset times are calculated from 台北's precise coordinates (25.0°, 121.6°) 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.