Latin America's time zones run from UTC−6 to UTC−3, which puts almost every major developer market in the region between one hour behind and two hours ahead of US Eastern time. For a US engineering team that means a nearshore developer can share most of a normal working day with you, which is the single biggest practical difference from offshore engagement. This guide shows exactly how the clocks line up, country by country, and how much overlap you actually need.
Latin America time zones compared with US time
Most of the region does not observe daylight saving time, and the US does. So the gap moves by an hour twice a year, in March and November. The table shows both halves of the year.
| Country (main tech hubs) | Time zone | vs. US Eastern (winter / summer) | vs. US Pacific (winter / summer) |
|---|---|---|---|
| Mexico (Mexico City, Guadalajara, Monterrey) | UTC−6, no daylight saving | 1 hour behind / 2 hours behind | 2 hours ahead / 1 hour ahead |
| Guatemala, Costa Rica | UTC−6, no daylight saving | 1 hour behind / 2 hours behind | 2 hours ahead / 1 hour ahead |
| Colombia (Bogotá, Medellín), Peru, Ecuador, Panama | UTC−5, no daylight saving | same time / 1 hour behind | 3 hours ahead / 2 hours ahead |
| Brazil (São Paulo), Argentina, Uruguay | UTC−3, no daylight saving | 2 hours ahead / 1 hour ahead | 5 hours ahead / 4 hours ahead |
| Chile (Santiago) | UTC−4, or UTC−3 in the southern summer | varies through the year | varies through the year |
"Winter" and "summer" mean US standard time (from the first Sunday in November) and US daylight time (from the second Sunday in March). Two details trip people up:
- Mexico ended daylight saving time for most of the country in 2022. Older charts that show Mexico shifting in step with the US are out of date. (Some border cities still follow the US schedule.)
- Chile changes its clocks on the southern-hemisphere calendar, roughly the opposite of the US. Check the current offset rather than trusting a fixed table.
Shared working hours by country
Offsets are abstract. What matters is how many hours of a normal 9-to-5 day you and the developer are both working. Assuming both sides keep ordinary local hours:
| Developer's time zone | Shared hours with US Eastern (winter / summer) | Shared hours with US Pacific (winter / summer) |
|---|---|---|
| UTC−6 (Mexico, Guatemala, Costa Rica) | 7 / 6 | 6 / 7 |
| UTC−5 (Colombia, Peru, Ecuador, Panama) | 8 / 7 | 5 / 6 |
| UTC−3 (Brazil, Argentina, Uruguay) | 6 / 7 | 3 / 4 |
The pattern is simple. East Coast teams get six to eight shared hours with almost anyone in the region. West Coast teams get the most overlap from Mexico and Central America, and the least from the Southern Cone, where one side usually shifts its day by an hour or two to close the gap. Compare that with offshore models, where the overlap with a US team is often a few hours at the edges of the day, or none. Nearshore vs offshore vs onshore covers the rest of that trade-off.
How much time-zone overlap does a remote developer need?
For a developer working inside your team (in your standups, your code review, your planning), aim for at least four shared hours a day. Below about four hours, collaboration stops being a conversation and becomes a relay: you ask a question, and the answer arrives tomorrow.
Four hours is a floor, not a target. It is roughly the point where a standup, a code review round-trip and an unplanned call all fit into the same day without anyone working outside normal hours.
Which work needs overlap, and which doesn't
A useful exercise is to sort your team's week into two piles.
Needs shared hours:
- Standups and planning. "What's in your way?" only works if someone can act on the answer the same day.
- Code review with back-and-forth. Three rounds of review take three days when every round crosses a night.
- Pairing and debugging. Nobody pairs asynchronously.
- Incidents. The developer who wrote the code needs to be reachable while it is broken.
- Clarifying requirements. Most rework starts with a small question that went unasked because asking was expensive.
Works fine asynchronously:
- Focused implementation on a well-specified task.
- Written design proposals and the first read of them.
- Documentation, tests and routine maintenance.
If the first pile is nearly empty, a bigger time gap can work. If it is full, overlap decides whether work ships on schedule. We wrote about the hidden cost of a 12-hour time difference years ago, and the arithmetic has not changed.
Making the overlap count
- Put the live work inside the shared window. Standups, reviews and planning go there. Focus time goes outside it, for both sides.
- Write the window down. "Available 9 to 5 Eastern" is clearer than "flexible." Name the hours and the channel for urgent questions.
- Watch the daylight-saving weeks. In March and November a recurring meeting set in one time zone quietly lands an hour early or late for the other.
- Keep writing things down anyway. Overlap makes it cheap to ask; it doesn't replace a clear ticket.
Frequently asked questions
Which Latin American countries share US Eastern time?
Colombia, Peru, Ecuador and Panama run on UTC−5 all year, which is the same as US Eastern standard time in winter and one hour behind it in summer.
Which Latin American countries are closest to US Pacific time?
Mexico and Central America (UTC−6) are two hours ahead of Pacific time in winter and one hour ahead in summer, giving a West Coast team six or seven shared working hours.
Does Mexico use daylight saving time?
Not in most of the country. Mexico ended daylight saving time in 2022, apart from some cities along the US border, so the gap with US time shifts by an hour when the US changes its clocks.
Is Argentina or Brazil too far ahead for a US team?
Not for an East Coast team, which shares six or seven working hours with them. A West Coast team shares three or four, so one side usually adjusts its hours by an hour or two.
Location is a proxy; ask about hours
Two developers in the same city can offer very different overlap depending on the hours they keep. What you are really buying is shared working time, so ask about it directly: which hours, which days, and whether the developer will be in your standups.
sourceBOLD engages senior developers across the Americas who work in or near US business hours as members of your team. How it works walks through the engagement from brief to first day, and what it costs shows the monthly fee.