To determine the current time in Sydney, Australia, go to the website TimeAndDate.com, and enter the city in the World Clock search box. In addition to the time, the website also displays the current weather, moon phase, day length, and sunrise and sunset times in Sydney.
Sydney is located in the state of New South Wales, part of the Australian Eastern Standard Time, or AEST, zone. Each state and territory in Australia decides whether to observe daylight saving time, or DST, which begins on the first Sunday in October and ends on the first Sunday in April, as of 2015. New South Wales has used DST since 1971.
Prior to the adoption of standard time zones, each local city or town in Australia was free to set its own time, called local mean time. Acting on the recommendation of the 1884 International Meridian Conference to use Greenwich Mean Time, or GMT, as the basis for standard time, the six Dominions of Australia passed time zone legislation that first took effect in February 1895. The AEST time zone was set 10 hours ahead of GMT.
All Australian states began using Coordinated Universal Time, or UTC, in September 2005. UTC, which is determined by the International Bureau of Weights and Measures, eliminates variations in the rate of rotation of the Earth that affect solar mean time.