Offshore Staff Time Zone Overlap Calculator
The first question every firm asks about offshore hiring is whether anyone will be online when they are. Set your hours, pick a location, and see the live overlap in seconds.
Response within one business day
4 to 8 hrs
typical live overlap
Full day
with a matched shift
Free
no signup needed
Your setup
Tell us when your office works and where your offshore team sits. The overlap updates instantly.
Your overlap
Manila is 12 hours ahead of your office.
Live overlap with your office
8 hours
About 100% of your 8 hours business day
Your hours
9 AM to 5 PM
ET local
That is, in Manila
9 PM to 5 AM +1
Philippines local
Your day, hour by hour (ET)
Offsets use standard time plus your daylight saving setting. Real overlap can vary by a few minutes around DST changeover dates, which differ by country.
Want a team that already works your hours? We staff legal roles on a shift built around your office, then prove the coverage in the first week.
Book a free consultationTime zone overlap is the real question behind offshore hiring
When a firm owner first considers hiring offshore legal staff, the objection is almost never about skill or cost. Those are easy to check. The hesitation is about hours. Will there be anyone to answer a question at 2 PM? Will a returned client call sit untouched until tomorrow? Will the new hire feel like a real part of the team or a message in a bottle sent overnight? The honest answer is that it depends entirely on the shift you set and the location you choose, and most people guess at both instead of doing the simple arithmetic.
This tool does the arithmetic. You tell it your time zone and your real working hours, you pick where your offshore team sits, and it shows you two things that settle the question. First, how many of your business hours an offshore shift actually covers live. Second, what your working window looks like on the local clock of the staff member, so you know exactly what you are asking of them. Once those numbers are on the screen, the decision stops being a worry and becomes a scheduling choice, which is all it ever really was.
How time zone overlap actually works
Overlap is just the slice of the clock where two working windows sit on top of each other. Your office runs a window, say 9 AM to 5 PM in your local time. Your offshore staff member runs their own window in their local time. Because their clock is set hours ahead of or behind yours, those two windows only share part of the day, and the size of that shared slice is the overlap.
The lever you control is the offshore shift. A staff member in Manila who works a normal local day, roughly 9 AM to 6 PM their time, will share only the tail end of your day, because Manila is far ahead of every US time zone. Move that same person to a local afternoon or evening shift and the overlap grows, because their working hours slide back toward your daytime. Push the shift all the way to a local night shift and it can cover your entire business day. Nothing about the distance changes. Only the shift does, and the shift is a choice.
This is why the same country can be described as both perfect and impossible for overlap depending on who you ask. The person who calls it impossible assumed a local day shift. The person who calls it perfect built the role around an evening or overnight shift. The calculator above lets you see both at once so you can decide with numbers instead of anecdotes.
How the main offshore locations line up with US hours
Each hiring region sits in a different relationship to US time zones. None is universally better. The right one depends on whether you want full daytime overlap, evening coverage, or work completed overnight before your team arrives.
Philippines (Manila)
UTC+8Strongest match for evening and overnight coverage, and the most common hub for legal support staff. A standard afternoon shift in Manila lines up cleanly with a US morning and midday.
India (Bengaluru)
UTC+5:30A late shift in India overlaps the early part of a US East Coast morning. Best for firms that want a few guaranteed live hours plus heavy heads down work while the office sleeps.
South Africa (Johannesburg)
UTC+2A late afternoon and evening shift catches the US morning. Useful when you want overlap that does not require deep overnight hours for the staff member.
Colombia and Mexico
UTC-5 to UTC-6Near identical to US business hours. A normal local day shift gives close to full overlap, which is why nearshore Latin America is popular for real time phone and intake work.
If you want to see how the cost side compares once you have settled on coverage, the legal staff cost calculator puts the fully loaded cost of an in house hire next to an offshore rate.
How much overlap you need depends on the role
More overlap is not automatically better. It is better for some work and wasteful for other work. Match the overlap target to what the role has to do live, and you get the most value from the seat.
Live phone and intake coverage
If the role answers calls or qualifies leads in real time, you want the offshore shift sitting on top of your busiest hours. Aim for the shift pattern that scores the most live overlap, then push the schedule an hour earlier or later to cover the start or end of your day.
After hours and overnight desk
Plenty of firms hire offshore precisely to cover the hours their local team is offline. Here low overlap is the goal, not a problem. A Manila day shift quietly clears your overnight queue so the work is done before your team logs on.
Async drafting and case prep
Document drafting, discovery support, and case file work do not need a live connection. A few overlap hours for handoffs and questions is enough, and the rest of the shift becomes focused production time with no office interruptions.
A single firm often blends these. The intake seat sits on your daytime for live calls, while the drafting seat runs a different shift that clears work overnight. When you map roles to shifts deliberately, offshore staffing stops being a compromise on hours and starts being a way to extend coverage at your firm well beyond a single local workday.
How to read your result and set the shift
The headline number is the live overlap, the hours your office and the offshore shift are online together. Below it, the calculator translates your business window into the local clock of the staff member so you can see exactly what shift you are asking them to work. That second number matters more than people expect. A schedule that looks fine on your side can be a punishing overnight shift on theirs, and the most reliable arrangements are the ones that are sustainable for the person actually working them.
Use the shift buttons to compare a local day shift, an evening shift, and a fully matched shift. The day shift is easiest on the staff member but usually gives the least overlap from far ahead time zones. The matched shift gives complete coverage but asks the most of them. The evening shift is often the sweet spot, delivering several solid live hours while still being a humane schedule. The daylight saving toggle lets you check both the summer and winter alignment, since US clocks change but most offshore hubs do not.
Once you know the overlap you want and the shift that delivers it, the rest is execution. A good provider locks the agreed shift, builds the role around it, and proves the coverage in the first week rather than asking you to take it on faith. The how it works page walks through how that gets set up, and the roles page shows the positions firms most often place on a shift built around their office.
Frequently asked questions
How much time zone overlap do offshore legal staff have with US law firms?
It depends on the location and the shift. A Philippines team on a local afternoon or evening shift can overlap four to eight live hours with a US business day, and a fully matched shift covers your hours completely. Latin America teams in Colombia or Mexico run nearly identical hours to US time zones, so a normal local day shift overlaps almost your entire day. This calculator shows the exact number for your office hours.
What is the time difference between the Philippines and the US?
Manila is UTC+8 and does not observe daylight saving time. That puts it 12 to 13 hours ahead of US Eastern time and 15 to 16 hours ahead of US Pacific time, depending on whether US daylight saving is in effect. In practice it means a Manila afternoon and evening shift lines up with a US morning, which is why it is the most common hub for offshore legal support.
Can offshore staff really work my office hours?
Yes. Offshore legal staff routinely work a fixed shift built around a client firm's time zone, including evening and overnight shifts that fully cover a US business day. The trade is on their side, not yours. A Manila staff member working your 9 to 5 Eastern would be on a 9 PM to 5 AM local shift, which is a normal and well compensated arrangement at established offshore providers.
Which offshore location is best for time zone overlap with the US?
For full daytime overlap with the least disruption to the staff member, nearshore Latin America wins because Colombia and Mexico share US time zones. For evening and overnight coverage, or for firms that want work completed before they arrive, the Philippines is the standard choice. India fits firms that want a few guaranteed live hours plus a large block of overnight production. Use the calculator to compare them against your own hours.
Does daylight saving time change the overlap?
It can shift the overlap by an hour. Most of the US moves clocks forward from mid March to early November, while the Philippines and India do not change at all. The calculator includes a daylight saving toggle so you can see both the summer and winter alignment. Turn it off for the winter months and for Arizona, which does not observe daylight saving.
How many overlap hours do I actually need?
It depends on the work. Real time phone and intake roles want the maximum overlap you can get. Drafting, discovery, and back office roles often run well on two to three shared hours for handoffs, with the rest of the shift as uninterrupted production. Decide what the role must do live, then pick the shift pattern that delivers at least that much overlap.
Get a team that works your hours
Book a free consultation and we will map your roles to a shift that covers the hours you need, then prove the overlap in the first week.