The short answer
11pm in Hanoi is 1pm in Buenos Aires.
Hanoi is 10 hours ahead of Buenos Aires. It falls outside the 9-to-5 in Hanoi but lands inside working hours in Buenos Aires.
Hanoi☾
11pm
Buenos Aires☀
1pm
Right now
3:35pm+07:00 · UTC+07:00 · Mon, Jun 22
5:35am-03:00 · UTC-03:00 · Mon, Jun 22
Read across to convert
Hanoi
+07:00 · UTC+07:00
Buenos Aires
-03:00 · UTC-03:00
Pinned11pmHanoi=1pmBuenos Aires
12amMon
2pmSun ·−1d
WORK1am
3pmSun ·−1d
WORK2am
4pmSun ·−1d
WORK3am
5pmSun ·−1d
4am
6pmSun ·−1d
5am
7pmSun ·−1d
6am
8pmSun ·−1d
7am
9pmSun ·−1d
8am
10pmSun ·−1d
9am
WORK11pmSun ·−1d
10am
WORK12amMon
11am
WORK1am
12pm
WORK2am
1pm
WORK3am
2pm
WORK4am
NOW
3pm
WORK5am
4pm
WORK6am
5pm
7am
6pm
8am
7pm
9am
WORK8pm
10am
WORK9pm
11am
WORK10pm
12pm
WORKPINNED
11pm
1pm
WORKdaylightnightworking hoursoverlap
Best time to meet=
Closest workable window
Just outside the working window — early on one side, late on the other.
Hanoi
5pm–7pm
Buenos Aires
7am–9am
Popular conversions
Quick reference.
9amHanoi=11pmBuenos Aires · prev day
12pmHanoi=2amBuenos Aires
3pmHanoi=5amBuenos Aires
5pmHanoi=7amBuenos Aires
9pmHanoi=11amBuenos Aires
In context
What each side covers.
Hanoi
3:35pm+07:00 · UTC+07:00
Cities on this clock
Buenos Aires
5:35am-03:00 · UTC-03:00
Cities on this clock
Related converters
Other popular pairs.
Pacific Time
1:35am
India Standard Time
2:05pm
Pacific Time to India12 hours 30 minutes behind
Eastern Standard Time
4:35am
Central European Time
10:35am
Eastern Time to Central Europe6 hours behind
India Standard Time
2:05pm
Eastern Standard Time
4:35am
India to Eastern Time9 hours 30 minutes ahead
Greenwich Mean Time
9:35am
India Standard Time
2:05pm
London to India4 hours 30 minutes behind
Pacific Standard Time
1:35am
Eastern Standard Time
4:35am
Pacific to Eastern Time3 hours behind
Central European Time
10:35am
India Standard Time
2:05pm
Central Europe to India3 hours 30 minutes behind
Frequently asked
Quick answers about converting between Hanoi and Buenos Aires. Can't find what you need? Email [email protected].
- What is the time difference between Hanoi and Buenos Aires?
- Hanoi is 10 hours ahead of Buenos Aires right now. We always show the live, daylight-saving-correct difference, so this figure already accounts for whichever side is observing summer time today.
- When it's 11pm in Hanoi, what time is it in Buenos Aires?
- 11pm in Hanoi is 1pm in Buenos Aires. It falls outside the 9-to-5 in Hanoi but lands inside working hours in Buenos Aires. Use the hour-by-hour table above to read any other time across.
- What's the best time for a call between Hanoi and Buenos Aires?
- There's no comfortable 9-to-5 overlap between Hanoi and Buenos Aires — they sit on opposite sides of the planet's working day. Plan for an early or late call on one side, or hand work off asynchronously.
- Does this account for daylight saving time?
- Yes. We track every clock change in both places, so the abbreviations you see — +07:00 and -03:00 — are the ones actually in effect right now, not a fixed all-year value. When either side changes its clocks, this page updates automatically.
- Why is the date sometimes different on each side?
- When two places are far enough apart, the same moment can fall on different calendar days. That is why some conversions are marked "previous day" or "next day" — it is the same instant in time, read off two clocks that crossed midnight at different points.