The short answer
5am in Tokyo is 5pm in Buenos Aires on the previous day.
Tokyo is 12 hours ahead of Buenos Aires. That's already evening in Buenos Aires, after the typical working day ends.
Tokyo☾
5am
Buenos Aires☀
5pm
previous day
Right now
11:35pmJST · UTC+09:00 · Tue, Aug 18
11:35am-03:00 · UTC-03:00 · Tue, Aug 18
Read across to convert
Tokyo
JST · UTC+09:00
Buenos Aires
-03:00 · UTC-03:00
Pinned5amTokyo=5pmBuenos Aires · Mon (previous day)
12amTue
12pmMon ·−1d
WORK1am
1pmMon ·−1d
WORK2am
2pmMon ·−1d
WORK3am
3pmMon ·−1d
WORK4am
4pmMon ·−1d
WORKPINNED
5am
5pmMon ·−1d
6am
6pmMon ·−1d
7am
7pmMon ·−1d
8am
8pmMon ·−1d
9am
WORK9pmMon ·−1d
10am
WORK10pmMon ·−1d
11am
WORK11pmMon ·−1d
12pm
WORK12amTue
1pm
WORK1am
2pm
WORK2am
3pm
WORK3am
4pm
WORK4am
5pm
5am
6pm
6am
7pm
7am
8pm
8am
9pm
9am
WORK10pm
10am
WORKNOW
11pm
11am
WORKdaylightnightworking hoursoverlap
Best time to meet
No shared working hours.
Tokyo and Buenos Aires are too far apart for a working-day overlap. The least-unsociable option is an early-morning call on one side and an evening one on the other — or hand work off asynchronously and let the planet do the waiting.
Popular conversions
Quick reference.
9amTokyo=9pmBuenos Aires · prev day
12pmTokyo=12amBuenos Aires
3pmTokyo=3amBuenos Aires
5pmTokyo=5amBuenos Aires
9pmTokyo=9amBuenos Aires
In context
What each side covers.
Buenos Aires
11:35am-03:00 · UTC-03:00
Cities on this clock
Related converters
Other popular pairs.
Pacific Time
7:35am
India Standard Time
8:05pm
Pacific Time to India12 hours 30 minutes behind
Eastern Daylight Time
10:35am
Central European Time
4:35pm
Eastern Time to Central Europe6 hours behind
India Standard Time
8:05pm
Eastern Daylight Time
10:35am
India to Eastern Time9 hours 30 minutes ahead
British Summer Time
3:35pm
India Standard Time
8:05pm
London to India4 hours 30 minutes behind
Pacific Daylight Time
7:35am
Eastern Daylight Time
10:35am
Pacific to Eastern Time3 hours behind
Central European Time
4:35pm
India Standard Time
8:05pm
Central Europe to India3 hours 30 minutes behind
Frequently asked
Quick answers about converting between Tokyo and Buenos Aires. Can't find what you need? Email [email protected].
- What is the time difference between Tokyo and Buenos Aires?
- Tokyo is 12 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 5am in Tokyo, what time is it in Buenos Aires?
- 5am in Tokyo is 5pm in Buenos Aires on the previous day. That's already evening in Buenos Aires, after the typical working day ends. Use the hour-by-hour table above to read any other time across.
- What's the best time for a call between Tokyo and Buenos Aires?
- There's no comfortable 9-to-5 overlap between Tokyo 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 — JST 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.