Sydney faces classic southern skies — Magellanic Clouds, Crux, and a winter Milky Way over the Tasman. Coastal humidity fights inland Blue Mountains clarity on many nights.
Southerly changes often scrub the air for excellent post-frontal transparency.
Australia · New South Wales · ~33.9°S
Tonight is 23 Oct, times in Australia/Sydney (GMT+11), computed with astronomy-engine for 33.87° S, 151.21° E. Climate: NASA POWER monthly means, 2001-2020, cloud and rain averaged over the whole day.
Check the live Tonight score for Sydney (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 (23 Oct) the moonless dark window in Sydney runs from 4:32 AM to 4:35 AM (GMT+11). This hub also shows moonrise, moonset and illumination; open Dark Sky Window for the full ephemeris card.
Tonight (23 Oct) astronomical darkness in Sydney runs from 8:44 PM to 4:35 AM (GMT+11). 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.