Three numbers. The ones that decide the meeting.
When the world meets at work.
Read the day in both zones.
Crossing the border. Money, language, plugs.
Money changes hands at the border: Monterrey uses the MXN ($) and San Juan uses the USD ($). Conversations can stay in Spanish, which is official in both countries. Cars drive on the right in both, so rentals feel familiar.
- Country
- Mexico
- Capital
- Mexico City
- Currency
- Mexican peso (MXN · $)
- Language
- Spanish
- Calling code
- +52
- Drives on
- Right
- Country
- Puerto Rico
- Capital
- San Juan
- Currency
- United States dollar (USD · $)
- Language
- English, Spanish
- Calling code
- +1
- Drives on
- Right
Quick answers. Before you book the call.
What's the time difference between Monterrey and San Juan?
Monterrey is 2 hours ahead of San Juan. Monterrey runs on GMT-6 and San Juan on GMT-4. 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's the best time to schedule a meeting?
There are 6 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 Monterrey from San Juan?
About 3,605 km as the crow flies (great-circle distance). A non-stop commercial flight cruises that in roughly 4h 44m, 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 Monterrey and San Juan use?
Monterrey uses the Mexican peso (MXN, $); San Juan uses the United States dollar (USD, $). 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 Monterrey from San Juan?
Dial the international prefix used by your carrier (often 011), then +52, 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 Monterrey and San Juan?
Both Mexico and Puerto Rico count Spanish among their official languages, so business meetings often skip translation. Monterrey also has no other official tongue; San Juan adds English.
Do Monterrey and San Juan drive on the same side of the road?
Yes — both drive on the right. Rental cars feel identical between the two.