Sydney is typically 2-3 hours ahead of Singapore, depending on the time of year. Singapore does not observe daylight saving time, but Sydney does.
During Australian daylight saving time (October to April), Sydney is 3 hours ahead of Singapore. During Australian winter (April to October), Sydney is only 2 hours ahead of Singapore.
Optimal meeting window: 10:00 AM - 6:00 PM Sydney time (7:00 AM - 3:00 PM or 8:00 AM - 4:00 PM Singapore depending on season). Business hours overlap well.
Sydney and Singapore share strong ties in finance, education, and tourism, with frequent direct flights between the two cities.