Best meeting time: Tokyo & Buenos Aires
Recommended slots for a cross-timezone call between Tokyo (Japan) and Buenos Aires (Argentina). Times update live and account for Daylight Saving automatically.
Japan
Tokyo
2:41 AM
UTC+09:00 · GMT+9
Argentina
Buenos Aires
2:41 PM
UTC-03:00 · GMT-3
Recommended windows
Best available overlap
- Tokyo
- 9:00 AM
- Buenos Aires
- 9:00 PM
One side is in core business hours, the other is in early or late working hours — workable for most teams.
Afternoon in Buenos Aires
- Tokyo
- 1:00 AM
- Buenos Aires
- 1:00 PM
Works when Buenos Aires prefers post-lunch slots and Tokyo can take an early or late call.
Advice
Best overlap: 9:00 AM–9:00 AM Tokyo time (1/2 zones in business hours).
24-hour overlap
Green = both cities in business hours. Amber = one in evening. Grey = at least one asleep.
| UTC | Tokyo | Buenos Aires | Suitability |
|---|---|---|---|
| 00:00 | 9:00 AM | 9:00 PM | Workable — one evening |
| 01:00 | 10:00 AM | 10:00 PM | Limited — one asleep |
| 02:00 | 11:00 AM | 11:00 PM | Limited — one asleep |
| 03:00 | 12:00 PM | 12:00 AM | Limited — one asleep |
| 04:00 | 1:00 PM | 1:00 AM | Limited — one asleep |
| 05:00 | 2:00 PM | 2:00 AM | Limited — one asleep |
| 06:00 | 3:00 PM | 3:00 AM | Limited — one asleep |
| 07:00 | 4:00 PM | 4:00 AM | Limited — one asleep |
| 08:00 | 5:00 PM | 5:00 AM | Poor — both off-hours |
| 09:00 | 6:00 PM | 6:00 AM | Poor — both off-hours |
| 10:00 | 7:00 PM | 7:00 AM | Poor — both off-hours |
| 11:00 | 8:00 PM | 8:00 AM | Poor — both off-hours |
| 12:00 | 9:00 PM | 9:00 AM | Workable — one evening |
| 13:00 | 10:00 PM | 10:00 AM | Limited — one asleep |
| 14:00 | 11:00 PM | 11:00 AM | Limited — one asleep |
| 15:00 | 12:00 AM | 12:00 PM | Limited — one asleep |
| 16:00 | 1:00 AM | 1:00 PM | Limited — one asleep |
| 17:00 | 2:00 AM | 2:00 PM | Limited — one asleep |
| 18:00 | 3:00 AM | 3:00 PM | Limited — one asleep |
| 19:00 | 4:00 AM | 4:00 PM | Limited — one asleep |
| 20:00 | 5:00 AM | 5:00 PM | Poor — both off-hours |
| 21:00 | 6:00 AM | 6:00 PM | Poor — both off-hours |
| 22:00 | 7:00 AM | 7:00 PM | Poor — both off-hours |
| 23:00 | 8:00 AM | 8:00 PM | Poor — both off-hours |
About
Working across 12 hours of time difference
With 12 hours between Tokyo and Buenos Aires, there is essentially no overlap during normal business hours. One side will always be early-morning or late-evening. Async-first collaboration is the realistic default. Reserve live calls for genuinely high-bandwidth conversations and rotate who absorbs the inconvenience week-to-week.
Daylight Saving Time can shift the gap by an hour twice a year. The North American DST window does not align with the European one, so the offset between Tokyo and Buenos Aires can drift in late March and again in early November. Use this page to re-check your standing meeting on each transition.
FAQ
What's the best time for a meeting between Tokyo and Buenos Aires?
Best overlap: 9:00 AM–9:00 AM Tokyo time (1/2 zones in business hours). The strongest business-hour overlap is UTC 0:00–1:00, which is Tokyo 9:00 AM–9:00 AM and Buenos Aires 9:00 PM–9:00 PM locally.
What is the time difference between Tokyo and Buenos Aires?
Tokyo is currently UTC+09:00 and Buenos Aires is UTC-03:00, a difference of 12 hours. The exact gap can shift by one hour when one city switches to or from Daylight Saving Time.
Should we shift the meeting if one city changes Daylight Saving Time?
Yes — when only one of the two cities observes DST, the overlap window moves by an hour. Re-check this page in the weeks around March/April and October/November and adjust your standing meeting accordingly. The 24-hour grid below always reflects the current correct offset.
Can I schedule a daily standup that works for both Tokyo and Buenos Aires?
Probably not as a daily — the offset is too large for both sides to stay in standard hours. Consider an asynchronous standup (written updates) and reserving live meetings for weekly or fortnightly cadence.