Los Angeles is UTC−7 (PDT) / UTC−8 (PST). Sydney is UTC+10 (GMT+10) / UTC+11 (GMT+11). Sydney is currently 17 hours ahead of Los Angeles.
Best times to meet (Los Angeles local time): 4:00 PM — 9:00 AM in Sydney.
Times shown in Los Angeles local time → Sydney local time. Based on business hours 09:00–17:00.
Los Angeles observes Pacific Time: UTC−8 (PST, Pacific Standard Time) in winter and UTC−7 (PDT, Pacific Daylight Time) during DST, which runs from the second Sunday in March to the first Sunday in November. The Pacific Time Zone covers the US West Coast, British Columbia in Canada, and parts of Mexico. Los Angeles is 3 hours behind New York, 8 hours behind London (winter), and 17 hours behind Tokyo — the largest offset between any two major business hubs, making real-time collaboration between LA and Tokyo exceptionally difficult.
California's economy is the fifth largest in the world by GDP, and Los Angeles is its entertainment and technology hub. The entertainment industry's standard workday is broadly 10:00–18:00 PT — slightly later than the East Coast norm — a schedule partly shaped by the city's car culture and long commutes. Silicon Valley, though technically in the San Francisco Bay Area (same timezone), has contributed to a global culture of asynchronous work that somewhat eases the burden of Pacific–European collaboration.
California voters approved Proposition 7 in 2018, which would allow the state legislature to enact year-round DST, but federal law changes are required before the state could actually stop changing its clocks. Until then, LA changes on the same schedule as the rest of the continental US. The Pacific–Eastern 3-hour gap means that Wall Street has been open for three hours by the time most Angelenos start their workday — a feature, not a bug, for West Coast traders who read overnight news before the market opens.
Sydney observes Australian Eastern Standard Time (AEST, UTC+10) in winter and Australian Eastern Daylight Time (AEDT, UTC+11) in summer. Because Sydney is in the Southern Hemisphere, its summer runs from October to April — the opposite of the Northern Hemisphere. Clocks go forward on the first Sunday in October and back on the first Sunday in April. This means that when London is entering summer (April), Sydney is leaving it; the two cities are briefly 10 hours apart instead of the usual 11 in Sydney's summer or 10 in Sydney's winter.
Sydney is Australia's largest city and its financial capital — the Australian Securities Exchange (ASX) opens at 10:00 AEST/AEDT. The city's UTC+10/+11 position means it is one of the first major financial centres to open each trading day, typically before Tokyo. Sydney is 10–11 hours ahead of London, making same-day business calls extremely difficult — an 09:00 call in Sydney is 23:00 the previous night in London. The best overlap window for Sydney–London is early Sydney morning (08:00–10:00 AEST), which corresponds to London's late evening (22:00–00:00).
Australia has a complex DST situation: New South Wales, Victoria, South Australia, and Tasmania observe DST, while Queensland, Western Australia, and the Northern Territory do not. This creates internal Australian timezone fragmentation during summer, with Sydney (AEDT, UTC+11) being 2 hours ahead of Perth (AWST, UTC+8) instead of the usual 2-hour difference in winter. International schedulers must check whether their Australian contact is in a DST-observing state before assuming "Australian Eastern Time."
Sydney is currently 17 hours ahead of Los Angeles.
When it is 12:00 noon in Los Angeles, it is 05:00 in Sydney (based on current offsets — verify during DST transitions).
Los Angeles observes DST, changing from PDT to PST. Sydney observes DST, changing from GMT+10 to GMT+11.