Latitude & Daylight at 台北

台北 sits at latitude 25.0°. At this latitude, daylight varies from approximately 13.6h in summer (solstice) to 13.6h in winter — a seasonal swing of 0.0h. The sun reaches a maximum altitude of 88.4° at summer solstice and a minimum of 41.5° at winter solstice. This mid-latitude profile is what shapes 台北's unique sunrise, sunset, and golden hour patterns year-round.

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。

Golden Hour Photography at 台北

Golden hour at 台北 occurs when the sun sits between −4° and 6° above the horizon, producing soft, warm, directional light ideal for portrait and landscape photography. At 台北's latitude, morning golden hour typically starts in the hour after sunrise and lasts approximately 28–40 minutes. Evening golden hour mirrors this before sunset. The longer twilight at this latitude gives photographers more time to capture the 'magic hour' compared to equatorial locations where the sun sets more steeply.

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。

UV Exposure & Sun Safety at 台北

UV radiation at 台北 peaks when the sun is highest in the sky — around solar noon. At 25.0° latitude, peak UV levels vary significantly by season: summer months see UV indices of 6–9 (high), while winter months typically register 1–3 (low). The World Health Organization recommends sun protection when UV index exceeds 3. At 台北's latitude, this threshold is exceeded for approximately 6–8 months per year, making sun awareness a year-round consideration for outdoor workers and athletes.

How We Calculate Solar Data for 台北

All solar calculations for 台北 use the Jean Meeus Chapter 25 solar position algorithm with bisection iteration, accurate to ±1 minute for dates between 1901–2099. Sunrise and sunset times define the moment the upper limb of the sun appears on the horizon, accounting for atmospheric refraction. Daily data is calculated client-side from 台北's coordinates (25.0°, 121.6°) — zero server processing means your location data never leaves your device.