Sydney operates on Australian Eastern Standard Time (AEST, UTC+10) during winter and Australian Eastern Daylight Time (AEDT, UTC+11) from October to April. Note that Australia's seasons are reversed — DST runs during the Southern Hemisphere summer.
The Australian Securities Exchange (ASX) operates from 10:00 AM to 4:00 PM AEST/AEDT. Sydney is one of the first major financial markets to open each day, providing early signals for global markets before Asian, European, and American exchanges begin trading.
When scheduling with Northern Hemisphere colleagues, be mindful that the time difference changes twice per year due to opposite DST schedules. Sydney can be anywhere from 14 to 16 hours ahead of New York depending on the time of year.
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