Does Hanoi observe daylight saving time?

No. Hanoi stays on ICT (UTC+7) all year, so its clocks don't change.

Does Sydney observe daylight saving time?

Yes. Sydney is on AEDT (UTC+11) now, and its clocks go back 1 hour on Sun, Apr 4, 2027, to AEST (UTC+10).

What time is it in Sydney when it's 9 AM in Hanoi?

1:00 PM in Sydney, on the same day.

Hanoi to Sydney Meeting Planner

Sydney is 4 hours ahead of Hanoi right now. Their working days overlap for 4 hours today.

Hanoi · Vietnam

8:11 PM

Sat, Oct 17 · ICT

Sydney · Australia

12:11 AM

Sun, Oct 18 · AEDT · summer time

Best Meeting Times Between Hanoi and Sydney

9:00 AM to 1:00 PM in Hanoi (1:00 PM to 5:00 PM in Sydney). That's when both cities are inside working hours, 9 AM to 5 PM, giving 4 hours of overlap today.

Who's meeting

2 of 4 places

HanoiOrganizerVietnam ·8:11PMnow
SydneyAustralia ·· summer time12:11AMTomorrow · now

Add a city

Add up to 4 places by city, country, time zone or abbreviation, like Tokyo, India or JST. Press "/" to jump here.

Date in Hanoi

Working hours, everywhere

Best times to meet

Saturday, October 17, 2026, in Hanoi time.

12:00PMBest · OptimalWorking hours in Hanoi (12:00) and Sydney (16:00).
11:00AMOption 2 · OptimalWorking hours in Hanoi (11:00) and Sydney (15:00).
10:00AMOption 3 · OptimalWorking hours in Hanoi (10:00) and Sydney (14:00).

The whole day

Pick any slot in the Fit row, or use the arrow keys there, to make it the meeting time.

Each column is a one-hour slot of the first place's day. The Fit row grades how well the slot suits everyone; each row shows the local time and whether it's working hours there.
Fit
HanoiUTC+7
SydneyAEDT
UTC	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16

Working hours (09–17)Just outside (07–09, 17–20)Late evening (20–23)NightFit: optimal, good, possible, poor

Your meeting

Hanoi12:00 PM UTC+7Sat, Oct 17
Sydney4:00 PM AEDTSat, Oct 17
UTC2026-10-17 05:00 UTC

What will it cost? Try the meeting cost calculator.

Time difference between Hanoi and Sydney

Sydney is 4 hours ahead of Hanoi right now: Sydney is on AEDT (UTC+11) and Hanoi on ICT (UTC+7). That changes on Sun, Apr 4, 2027, when clocks go back in Sydney: then Sydney is 3 hours ahead of Hanoi.

Time difference between Hanoi and Sydney over the next 12 months
From	Difference	Why
Now	Sydney 4 hours ahead	—
Sun, Apr 4, 2027	Sydney 3 hours ahead	Clocks go back in Sydney
Sun, Oct 3, 2027	Sydney 4 hours ahead	Clocks go forward in Sydney

Hanoi is on Indochina Time. Sydney is on Australian Eastern Standard Time.

Frequently Asked Questions: Hanoi & Sydney Scheduling

What is the time difference between Hanoi and Sydney?: Sydney is 4 hours ahead of Hanoi right now: Sydney is on AEDT (UTC+11) and Hanoi on ICT (UTC+7). That changes on Sun, Apr 4, 2027, when clocks go back in Sydney: then Sydney is 3 hours ahead of Hanoi.
What is the best time to schedule a meeting between Hanoi and Sydney?: 9:00 AM to 1:00 PM in Hanoi (1:00 PM to 5:00 PM in Sydney). That's when both cities are inside working hours, 9 AM to 5 PM, giving 4 hours of overlap today.
Does Hanoi observe daylight saving time?: No. Hanoi stays on ICT (UTC+7) all year, so its clocks don't change.
Does Sydney observe daylight saving time?: Yes. Sydney is on AEDT (UTC+11) now, and its clocks go back 1 hour on Sun, Apr 4, 2027, to AEST (UTC+10).
What time is it in Sydney when it's 9 AM in Hanoi?: 1:00 PM in Sydney, on the same day.

Or see every city pair, or plan with more places in the meeting planner.