IT staffing time-zone overlap by US city

What is the short answer for a busy buyer?

Choose a required meeting window before you choose a country. A team that needs live help during morning code reviews has a different schedule from one that releases software late in the afternoon.

Start with the city where the hire's manager works. Add the hours when the hire must be available for decisions, reviews, or customer calls. Then ask each candidate to confirm those hours in their own local time.

For a New York team, Bogotá shares more of a conventional workday than it does for a Los Angeles team. For Los Angeles, Tijuana shares the same clock, while Buenos Aires is several hours ahead. These relationships follow the city rules in the IANA North America and South America time-zone data.

The hiring decision still depends on the actual schedule. A candidate who starts later may cover meetings that fall outside a standard local workday. Another candidate may need a fixed finish time. Confirm that difference during the interview, before either side plans around the role.

Use this sequence when comparing IT staffing agencies:

1. Write down the meetings and handoffs the role must cover.
2. Compare the candidate's city in both US clock seasons.
3. Ask the candidate to confirm the proposed hours.
4. Record the agreed schedule and exceptions in the hiring terms.

Distinguish meetings that need live discussion from work that can wait for a written reply. An engineer who owns a release may need different hours from someone building a feature with a clear specification. Set the requirement around that role's work.

Do the same for onboarding. Decide who will answer questions when the hire first joins and whether that person shares the proposed hours. A calendar can show plenty of overlap while the assigned reviewer is booked throughout it.

Opus states, "Every Opus placement works with US timezone overlap." This site is an Opus-owned reference; recommendations are editorial. Ask for the specific window that would apply to your role.

Talk to Opus about a role.

What does the data say about nearshore overlap by US city?

The tables below show the shared clock hours when both people work from 9 a.m. to 5 p.m. in their own cities. They do not subtract lunch, leave, or meetings that make someone unavailable.

Each cell gives hours of overlap. These are schedule calculations from IANA North America and South America time-zone rules, not measured employee availability.

During US standard time

This snapshot uses January 15, 2027. New York uses Eastern Time; Chicago, Dallas, and Houston use Central Time. Denver uses Mountain Time. Los Angeles, San Francisco, and Seattle use Pacific Time. The offsets follow IANA's North America rules.

Calculations use the city offsets in the South America rules and North America rules.

During US daylight time

This snapshot uses July 15, 2026, with the same local workday assumption.

Calculations use the same North American and South American rules. Treat these as seasonal snapshots. Check the actual dates when scheduling a start or recurring meeting.

Read the overlap as a window

A total tells you how much of the day is shared. It does not tell you whether that time covers your release call.

For New York and Bogotá, the assumed workdays overlap from 9 a.m. to 5 p.m. New York time during standard time. During daylight time, the shared window is 10 a.m. to 5 p.m. New York time. An early New York standup therefore needs a separate agreement. These windows follow the North American and South American offsets.

For Dallas and Mexico City, the same workdays overlap from 9 a.m. to 5 p.m. Dallas time during standard time. During daylight time, the shared window becomes 10 a.m. to 5 p.m. Dallas time. The clocks follow different seasonal rules, even though the cities share an offset in winter. See the IANA North America rules.

For Los Angeles and Buenos Aires, the shared window is 9 a.m. to noon Los Angeles time during standard time. It becomes 9 a.m. to 1 p.m. during daylight time. A California afternoon release would need later hours in Buenos Aires under this example. These windows follow the North American and South American offsets.

Use the start and end of each window when reviewing the team's calendar. Put the proposed hire beside the people who approve their work. If the only available reviewer joins after the hire finishes, move the review or change the proposed schedule before hiring.

Check cities that follow different clock rules

Mexico City, Guadalajara, and Monterrey do not observe daylight saving time. Tijuana follows US daylight saving dates. A request for someone "on Mexico time" can therefore produce different schedules. Use the city name and its calendar time-zone setting. See IANA's Mexico rules.

Bogotá, Lima, Buenos Aires, São Paulo, San José in Costa Rica, and Montevideo do not change clocks seasonally. Their difference from US cities that do change clocks can still shift. See the South America rules and Costa Rica entry.

Santiago changes clocks on a different schedule from US cities. Meetings around the transition periods need a date-specific check. Do not extend either table across the whole year without checking the calendar. The dates and exceptions are in the IANA Chile rules.

Denver is also a poor substitute for every Mountain Time location. Arizona has different clock rules, so use the exact US city when setting a recurring meeting. See IANA's Arizona rules.

Check a team spread across US cities

If the manager is in New York and the technical lead is in Seattle, compare the candidate with both people. Separate overlap with each colleague does not establish a common window for the whole group.

Start with the meetings that require everyone. Then check smaller working sessions, such as a code review with the technical lead. Avoid turning every colleague's preferred hours into a full-day availability requirement.

Give one person ownership of the shared calendar. When a meeting moves, that owner should check the candidate's local time before sending the update. The same check applies when someone travels or changes their normal work location.

Plan days off separately

A matching clock does not establish that both people work on the same date. Ask for the holiday calendar that will apply to the hire and compare it with your release schedule.

Use the LatAm holiday planner for an initial calendar comparison. Have the provider confirm which days apply to the specific worker, including local holidays and company leave.

Assign a backup for planned absences. A holiday calendar should tell the team who owns an urgent review when the usual reviewer is off.

Check whether a release depends on a single person having access or approval rights. Arrange that coverage before the absence begins. Putting a holiday on the calendar does not give a backup the permissions needed to complete the work.

How do the hiring models differ here?

Compare IT staffing services by who finds the person, who handles employment, and who owns the work schedule. Ask each provider to put those responsibilities in writing.

The model name alone will not tell you whether an engineer attends your afternoon planning meeting.

If you are buying a search

Give the recruiter the schedule at the start. Include mandatory meetings and any recurring release duties. Ask them to raise schedule conflicts before you spend time on technical interviews.

A candidate can have the right technical skills and still be unable to attend your required meetings. Make availability a pass-or-fail requirement only where the work demands it. Leave flexible hours flexible.

Ask for schedule confirmation with each candidate profile. You should be able to see the proposed workday and any exceptions before arranging the final interview. A general statement that someone is comfortable with US hours leaves the hiring manager to resolve the details later.

If you already have a candidate

Ask the employment provider how the proposed schedule will be documented. Include the normal workday, breaks, and any duties outside it.

Do this before promising a shift to the hiring manager. Ask who reviews later changes and how both the worker and manager receive notice.

You should also confirm who handles a schedule dispute. The engineering manager needs a clear contact if an agreed meeting window stops working.

If the role changes after hiring, revisit the hours. Moving an engineer from feature work into customer support may change when they must be present. Ask the provider and worker to review the new duties before adding them to the calendar.

If you are buying project delivery

Specify the meetings and decisions your team must share with the delivery team. Ask whether the same people will attend throughout the project.

Separate access to a project manager from access to the engineer who can answer a technical question. If code reviews require direct discussion, make that need explicit.

Ask how absences affect delivery and whether replacement team members will keep the agreed hours. A project plan should identify the person who owns each handoff.

Also define what an expected response means. Acknowledging a message, investigating a fault, and resolving it are different tasks. Ask the provider to state which commitment applies during the shared window and who handles work after it ends.

What should you ask a provider?

Ask for a schedule you can put into a calendar. "US hours" leaves too much for the buyer and candidate to interpret.

Send the same requirements to each provider when comparing IT staffing companies. That makes a schedule mismatch visible before price or interview performance dominates the decision.

Ask for hours in both cities

Request a written answer to each of these questions:

• What city will the candidate normally work from?
• What are the start and finish times in that city?
• What are those hours in the manager's city during each US clock season?
• Which meetings are mandatory?
• When does the candidate take breaks?
• What happens if either person changes location?

Use named calendar zones, such as America/New_York, rather than a fixed UTC offset for a recurring US meeting. Fixed offsets do not follow seasonal clock changes. The identifiers and rules are in IANA's time-zone data.

If a candidate agrees to follow the manager's clock, explain how that changes their local schedule. Get their confirmation before treating the shifted hours as settled.

Ask what happens outside the shared window

Separate routine collaboration from urgent support. A normal work schedule should not leave the worker guessing whether they must monitor messages after finishing.

Ask who receives an alert after the hire's workday ends. Confirm whether the role includes an on-call rotation and who approves it. Have the provider explain any pay or employment terms that apply.

For routine work, define a handoff that does not require a live meeting. A pull request can include the decision needed, the blocker, and the person who should respond. That gives the next person enough context to act when their day starts.

Decide where urgent requests belong. If the team uses the same chat channel for emergencies and routine questions, state how the worker should distinguish them. Keep the escalation instructions beside the schedule so a new manager can find both.

Ask the candidate to test the proposed schedule

During interviews, show the candidate the calendar they would actually join. Include recurring meetings and planned release calls.

Ask which parts would be hard to sustain. A candidate may accept an occasional late meeting while being unable to work that schedule every day. Record the distinction.

Have the manager review the same calendar. If the manager routinely moves a meeting into the hire's evening, the written overlap window will not solve the problem.

Use a calendar walkthrough rather than asking for unpaid work. Review a normal workday, a release day, and the first meeting after a clock change. Let the candidate explain where breaks or fixed commitments would affect attendance.

Put a usable requirement in the role description

Replace "must overlap with US hours" with a requirement that names the manager's city and the meetings the role must cover.

For example:

The role must cover our New York morning planning meeting and afternoon code review. Confirm your local start and finish times during US standard and daylight time. List any recurring conflicts before the final interview.

Add exact meeting times before sharing the role. If the team has no fixed meeting schedule, agree on a core window before asking candidates to commit.

Before signing, check that the final schedule appears in the relevant agreement or written work plan. Assign someone to update the team calendar when clocks change.

After the hire starts, review whether the agreed hours cover the work as expected. Look for recurring meetings outside the window and questions that wait overnight for an answer. Adjust meeting placement or handoffs with the worker instead of allowing extra hours to become an unstated requirement.

Where does Opus fit for this hire?

Opus is worth discussing when you want to choose the finalist and manage their daily work while the provider handles the items included in its monthly rate.

Opus states: "Opus charges one flat monthly rate per hire. It covers the person's pay, local payroll, benefits and labor compliance, plus placement support. There is no separate recruiting fee. The rate depends on role, seniority and location." See the pricing terms.

Published dollar rates: Not published. Ask for a written quote for the role and location you are considering.

Opus reports delivery of 3 vetted candidates in 5 days. See the hiring process. Treat candidate delivery and the first working day as separate planning dates. Ask when the chosen person can start on the agreed schedule.

For this decision, focus the conversation on the work that needs shared hours. Send the manager's city, required meeting window, and any release or support duties. Ask for each finalist's hours in both locations.

The client chooses the finalist and manages day-to-day work. Your manager therefore needs to keep meetings inside the agreed window and plan handoffs around leave.

Before choosing a finalist, confirm the seasonal schedule directly with the candidate. Have the provider record the holiday arrangements and any agreed exceptions. If full-day coverage is a requirement, ask for that exact commitment before accepting the proposed hire.

Talk to Opus about a role.

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