Check exact times before you send that invite
TimezoneHelp accounts for DST on the specific date you pick - not just the general offset.
Why Scheduling Australia–USA Meetings Is Genuinely Hard
A 5-hour gap, an 8-hour gap - those are inconvenient but solvable. Australia and the USA are different. Sydney sits at UTC+10/+11; New York at UTC−4/−5. The raw gap is 14 to 16 hours, meaning when it's 9 AM Monday in Sydney, it's Sunday afternoon in New York. The calendar date doesn't even match.
Los Angeles makes it worse - Sydney can be 19 hours ahead of LA, leaving no standard business-hours overlap at all. Someone always has to flex.
Current Time Differences: Australia vs USA Cities
Offsets below reflect the most common period: US on EDT, Australia on AEST. See the DST section for how these shift across the year.
| Australian City | Timezone | vs New York (EDT) | vs Chicago (CDT) | vs Los Angeles (PDT) |
|---|---|---|---|---|
| Sydney / Melbourne | AEST (UTC+10) | +14 hours | +15 hours | +17 hours |
| Adelaide | ACST (UTC+9:30) | +13.5 hours | +14.5 hours | +16.5 hours |
| Brisbane | AEST (UTC+10) | +14 hours | +15 hours | +17 hours |
| Perth | AWST (UTC+8) | +12 hours | +13 hours | +15 hours |
| Darwin | ACST (UTC+9:30) | +13.5 hours | +14.5 hours | +16.5 hours |
Brisbane doesn't observe daylight saving, so its offset stays fixed at UTC+10 year-round - making it 1 hour behind Sydney during Australian DST. Worth checking if your team spans cities. Full details in our Australian time zones guide.
Best Overlap Hours: The Practical Windows
Windows below assume standard business hours of 8 AM–6 PM on each side.
Sydney / Melbourne vs New York (EDT, UTC−4)
- 8:00–9:00 AM AEST = 6:00–7:00 PM EDT - Sydney starts, New York wraps up
- 7:00–9:00 AM AEST = 5:00–7:00 PM EDT - Extended window if New York runs late
The Australian side is fresh; the US side is end-of-day. For recurring calls, rotate who holds the uncomfortable slot.
Sydney / Melbourne vs Los Angeles (PDT, UTC−7)
- 8:00–10:00 AM AEST = 3:00–5:00 PM PDT - the only workable window at 17 hours apart
Outside this, someone starts before 8 AM or stays past 6 PM. Use the meeting planner to confirm for a specific date.
Perth vs New York (EDT, UTC−4)
- 8:00 AM–12:00 PM AWST = 8:00 PM–12:00 AM EDT - Perth morning, New York evening
Perth (UTC+8, no DST) is the friendliest Australian city for US scheduling. Perth mornings pair well with US West Coast afternoons too.
| Meeting Pair | Best Window (Australian Time) | Equivalent US Time | Comfort Level |
|---|---|---|---|
| Sydney → New York | 8:00–9:30 AM AEST | 6:00–7:30 PM EDT | Manageable |
| Sydney → Chicago | 8:00–9:00 AM AEST | 5:00–6:00 PM CDT | Tight |
| Sydney → Los Angeles | 8:00–10:00 AM AEST | 3:00–5:00 PM PDT | Tight but workable |
| Melbourne → New York | 8:00–9:30 AM AEST | 6:00–7:30 PM EDT | Manageable |
| Perth → New York | 8:00 AM–12:00 PM AWST | 8:00 PM–12:00 AM EDT | Perth mornings OK |
| Perth → Los Angeles | 8:00–11:00 AM AWST | 5:00–8:00 PM PDT | Best of the options |
| Brisbane → New York | 8:00–9:30 AM AEST | 6:00–7:30 PM EDT | Same as Sydney (no DST) |
How DST Changes These Numbers - Four Times a Year
Both countries observe DST, but on opposite hemispheres and different dates. The result: the offset between Australia and the USA shifts up to four times per year - not twice.
- March (2nd Sunday): USA springs forward - gap between Australia and USA narrows by 1 hour
- April (1st Sunday): Australia falls back - gap widens by 1 hour again
- October (1st Sunday): Australia springs forward - gap narrows by 1 hour
- November (1st Sunday): USA falls back - gap widens by 1 hour again
A recurring 9 AM AEST Monday call can land at 6 PM, 7 PM, or 8 PM in New York depending on the month - with nobody changing the invite. It's one of the most common causes of missed meetings. See the full breakdown in our DST and international meetings guide.
DST Offset Reference Table: Sydney vs New York
| Period | Sydney Timezone | New York Timezone | Sydney–New York Gap |
|---|---|---|---|
| Jan–Mar (before US DST) | AEDT (UTC+11) | EST (UTC−5) | +16 hours |
| Mar–Apr (US on DST, AUS still on DST) | AEDT (UTC+11) | EDT (UTC−4) | +15 hours |
| Apr–Oct (AUS off DST, US on DST) | AEST (UTC+10) | EDT (UTC−4) | +14 hours |
| Oct–Nov (both on DST briefly) | AEDT (UTC+11) | EDT (UTC−4) | +15 hours |
| Nov–Dec (AUS on DST, US off DST) | AEDT (UTC+11) | EST (UTC−5) | +16 hours |
The narrowest gap (14 hours) runs April–October; the widest (16 hours) runs November–March. More on US DST dates here.
Recommended Meeting Windows by Season
April–October - narrowest gap (+14 hrs, Sydney vs New York)
The most forgiving period. Anchor recurring meetings here.
- Sydney: 8:00–9:00 AM AEST = New York: 6:00–7:00 PM EDT
- Sydney: 8:00–10:00 AM AEST = Los Angeles: 3:00–5:00 PM PDT
November–March - widest gap (+16 hrs, Sydney vs New York)
The gap is brutal. Push Australia to 9–10 AM or ask the US team to start at 5–6 PM.
- Sydney: 9:00–10:00 AM AEDT = New York: 5:00–6:00 PM EST
- Sydney: 8:00–9:00 AM AEDT = New York: 4:00–5:00 PM EST (tighter)
Tips for Remote Teams Spanning Australia and the USA
1. Verify the offset every time DST changes
The Sydney–New York gap shifts up to four times a year. A recurring meeting set in April needs checking again in October. A one-hour shift is enough to push a call outside business hours on one side.
2. Use timezone-aware calendar events, not hardcoded offsets
Set events to "America/New_York" or "Australia/Sydney" - not "UTC−5." Calendar apps then handle DST transitions automatically. Hardcoded offsets silently drift by an hour.
3. Rotate who takes the inconvenient slot
A standing "early Sydney / late NYC" format burns out one team fast. Alternate who takes the uncomfortable end each week.
4. Push non-decisions to async
Live meeting time across this gap is scarce. Save it for real decisions. Status updates, approvals, and non-urgent questions belong in Slack, Loom, or shared docs.
5. Always use a date-specific tool, not a generic offset
"Sydney is +14 hours from New York" is wrong for half the year. The overlap calculator and meeting planner apply exact DST rules for the date you enter.
6. Consider Perth when you have flexibility
Perth (UTC+8, no DST) cuts the gap to 12–15 hours depending on the US coast - a meaningful improvement. Perth mornings pair well with US West Coast afternoons.
Find your exact overlap window
Enter any Australian and US city pair, pick a date, and see accurate local times - DST included.
Related Scheduling Pairs
- Australia–UK: The 9–11 hour gap is far more workable. Use the Australia–UK meeting planner for exact windows.
- USA–India: India has no DST, so the offset is predictable - but the New York–India gap is still 9.5–10.5 hours.
- Australia–Singapore: Singapore (UTC+8) has no DST. Just a 2-hour gap from AEST, no transitions to track.
Stop guessing at time differences
The TimezoneHelp planner applies DST rules for the exact date you choose. No surprises when the clocks change.
Frequently Asked Questions
The most workable window is 8:00–9:00 AM AEST (Sydney), which lands at 6:00–7:00 PM EDT (New York) during US Eastern Daylight Time. Both sides are within reach of a normal working day - Sydney is just starting, New York is finishing. Outside daylight saving periods the offset shifts, so always verify exact times before sending invites.
Sydney is between 14 and 16 hours ahead of New York, depending on daylight saving time in both countries. The narrowest gap (14 hours) occurs April–October when Australia is on AEST and the US is on EDT. The widest gap (16 hours) occurs November–March when Australia is on AEDT and the US is on EST.
Sydney and Los Angeles are 17–19 hours apart. The most practical meeting window is 8:00–10:00 AM AEST (Sydney) / 3:00–5:00 PM PDT (Los Angeles) during the Northern Hemisphere summer. In winter the gap widens and there is effectively no standard business-hours overlap - one party must take an early morning or late evening slot.
Both countries observe DST but on opposite hemispheres and different dates. The USA springs forward in March; Australia springs forward in October. This means the offset changes up to four times per year - in March, April, October, and November. The gap can shift by 1–2 hours over a single month, which is enough to break a recurring weekly meeting that was previously working.
Yes, but narrowly. For Sydney vs New York, there is roughly a 1–2 hour window around 8–9 AM Sydney / 6–7 PM New York. For Sydney vs Los Angeles, the window is 8–10 AM Sydney / 3–5 PM Los Angeles (during PDT). Perth vs the US East Coast has slightly better overlap because Perth is only UTC+8 - 12–13 hours ahead of New York rather than 14–16.
Rotating the meeting time is the fairest approach. Alternate who takes the inconvenient slot each week, and use a timezone-aware scheduling tool to verify the time each time DST changes. The TimezoneHelp meeting planner automatically accounts for DST on specific dates, so you always see accurate local times before sending a calendar invite.