Hong Kong’s humid subtropical climate and dense urban light make Sai Kung and island ridges the practical dark options. Autumn high-pressure cells bring the year’s best transparency.
Typhoon season cloud and summer haze often limit deep-sky to brief windows.
China · Pearl River Delta · ~22.3°N
Tonight is 22 Oct, times in Asia/Hong_Kong (GMT+8), computed with astronomy-engine for 22.32° N, 114.17° E. Climate: NASA POWER monthly means, 2001-2020, cloud and rain averaged over the whole day.
Check the live Tonight score for Hong Kong (cloud, dew, transparency, and astronomical dark), then read the hourly cloud timing chart and moonless dark window on this page.
Use the best clear window clock times after astronomical darkness, and prefer moonless hours when deep-sky contrast matters.
Tonight (22 Oct) the moonless dark window in Hong Kong runs from 3:19 AM to 5:08 AM (GMT+8). This hub also shows moonrise, moonset and illumination; open Dark Sky Window for the full ephemeris card.
Tonight (22 Oct) astronomical darkness in Hong Kong runs from 7:08 PM to 5:08 AM (GMT+8). This hub lists sunset, civil, nautical and astronomical dusk and the matching dawn times, plus when the Moon and planets are highest. Astronomical darkness starts when the Sun is 18° below the horizon.
ISS passes are spottable near dusk or dawn when the sky is dark and the station is still sunlit. This page lists the next spottable pass when available.