San Juan×Buenos Aires
Three numbers. The ones that decide the meeting.
When the world meets at work.
Read the day in both zones.
If it's this in San Juan, it's that in Buenos Aires.
When it's 8:00 am in San Juan, it's 9:00 am in Buenos Aires — late morning there, the same day.
When it's 10:00 am in San Juan, it's 11:00 am in Buenos Aires — late morning there, the same day.
When it's 12:00 pm in San Juan, it's 1:00 pm in Buenos Aires — midday there, the same day.
When it's 3:00 pm in San Juan, it's 4:00 pm in Buenos Aires — afternoon there, the same day.
When it's 5:00 pm in San Juan, it's 6:00 pm in Buenos Aires — evening there, the same day.
When it's 9:00 pm in San Juan, it's 10:00 pm in Buenos Aires — night there, the same day.
Crossing the border. Money, language, plugs.
Money changes hands at the border: San Juan uses the USD ($) and Buenos Aires uses the ARS ($). Conversations can stay in Spanish, which is official in both countries. Cars drive on the right in both, so rentals feel familiar.
- Country
- Puerto Rico
- Capital
- San Juan
- Currency
- United States dollar (USD · $)
- Language
- English, Spanish
- Calling code
- +1
- Drives on
- Right
- Country
- Argentina
- Capital
- Buenos Aires
- Currency
- Argentine peso (ARS · $)
- Language
- Guaraní, Spanish
- Calling code
- +54
- Drives on
- Right
Quick answers. Before you book the call.
What's the time difference between San Juan and Buenos Aires?
San Juan is 1 hour ahead of Buenos Aires. San Juan runs on GMT-4 and Buenos Aires on GMT-3. The gap can shift by an hour when either side enters or leaves daylight saving — the live clocks above always reflect the current offset.
When it's 10 am in San Juan, what time is it in Buenos Aires?
10:00 am in San Juan is 11:00 am in Buenos Aires on the same day — late morning there. The same shift applies to any hour; the quick-conversion cards and the 24-hour table above cover the full day.
When it's 3 pm in San Juan, what time is it in Buenos Aires?
3:00 pm in San Juan is 4:00 pm in Buenos Aires on the same day — afternoon there. The same shift applies to any hour; the quick-conversion cards and the 24-hour table above cover the full day.
When's the best time to schedule a meeting?
There are 7 hours where both cities are inside a 09:00–17:00 workday. Aim for the middle of that window so neither side is starting or closing out.
Does daylight saving time change the difference?
Yes, if either city observes DST. When one side shifts and the other doesn't, the gap changes by one hour. The DST badges under each clock show whether each zone is currently shifted and when the next transition lands.
How far is San Juan from Buenos Aires?
About 5,957 km as the crow flies (great-circle distance). A non-stop commercial flight cruises that in roughly 7h 31m, not counting airport time, winds, or routing around restricted airspace.
Can I send this meeting time as a calendar invite?
Yes. Pick a time on the slider above, open the meeting card, customize the title and duration, then download the .ics file. It imports cleanly into Google Calendar, Outlook, and Apple Calendar with the correct timezone attached.
What currency do San Juan and Buenos Aires use?
San Juan uses the United States dollar (USD, $); Buenos Aires uses the Argentine peso (ARS, $). Check the live rate before transferring money or paying with a card abroad — most banks add a 1–3 % FX margin on top of the mid-market rate.
How do I call San Juan from Buenos Aires?
Dial the international prefix used by your carrier (often 00), then +1, then the local number — drop any leading zero of the city or mobile code. For free calls, WhatsApp, Signal, and FaceTime work over Wi-Fi regardless of country code.
What language is spoken in San Juan and Buenos Aires?
Both Puerto Rico and Argentina count Spanish among their official languages, so business meetings often skip translation. San Juan also has English; Buenos Aires adds Guaraní.
Do San Juan and Buenos Aires drive on the same side of the road?
Yes — both drive on the right. Rental cars feel identical between the two.