About Sydney time
Sydney runs on Australian Eastern Time and, being in the Southern Hemisphere, keeps daylight saving in the months when the north does not.
Because Sydney’s summer is the northern winter, its DST schedule is essentially inverted — the gap to London can swing by two hours across the year as the two hemispheres shift in opposite directions. Australia is a scheduling puzzle even internally: neighbouring Queensland does not observe DST, so Sydney and Brisbane briefly share a clock and then diverge each October.
Southern-Hemisphere reversed DSTHarbour NYE fireworks (early global midnight)State-by-state DST split