Timezone overlap calculator for remote & hybrid teams
See exactly when your distributed team is online at the same time — accounting for daylight saving time automatically. Add your team's locations and working hours below.
New York: 9:00 AM – 12:00 PM
London: 2:00 PM – 5:00 PM
Based on each location's current UTC offset (today's date) — daylight saving time is already accounted for.
Why timezone overlap matters more than raw headcount
A distributed team isn't just people in different places — it's people whose working days barely touch. The overlap window is the only time meetings, pairing, and live decisions can happen at all; everything else has to survive an async round-trip.
US East Coast and Western Europe typically share 3–4 hours a day on standard hours — enough for a daily sync if you schedule it early.
Add East Asia to a US + Europe team on standard hours and the shared window frequently disappears entirely — this is the most common reason "just hop on a call" stops working.
Regions that observe daylight saving don't all shift on the same date, so a team's overlap can quietly move by an hour for a few weeks each spring and autumn.
Typical overlap between common team hubs
Assuming standard 9:00 AM – 5:00 PM local hours in both places. Ranges reflect daylight-saving seasons — use the calculator above for today's exact window.
| Location pair | Daily overlap (9–5 both sides) |
|---|---|
| New York ↔ London | 3–4 hours |
| New York ↔ San Francisco | 5 hours |
| San Francisco ↔ London | 0–1 hours |
| London ↔ Dubai | 4–5 hours |
| London ↔ Singapore | 0–1 hours |
| New York ↔ Singapore | None |
| Singapore ↔ Sydney | 5–6 hours |
| New York ↔ São Paulo | 6–7 hours |
Frequently asked questions
Timezone overlap is the window of time when everyone on a distributed team is within their normal working hours at the same time. It matters because meetings, pairing sessions, and quick questions all depend on real-time overlap — without it, every exchange becomes an async round-trip that can add a full day of delay.
Most teams find 2–4 hours of daily overlap enough for meetings and urgent coordination, as long as the rest of the work can happen asynchronously. Teams spanning three or more regions (e.g. US, Europe, and Asia) often have zero standard-hours overlap and need to shift hours or rely more heavily on async workflows.
Yes. Regions that observe DST shift by an hour twice a year, and not all regions shift on the same dates — so a team's overlap window can temporarily change by an hour during the transition weeks. This calculator uses each location's current UTC offset, so it automatically reflects whatever DST state is active today.
It happens most often with three-region teams (e.g. US West Coast, Europe, and East Asia on standard 9–5 hours). The usual fixes are: shift one region's hours earlier or later by 1–2 hours, rotate who takes the "early" or "late" meeting slot, or lean on async updates (like Asa's AI project summaries) instead of requiring live overlap for status updates.
Yes — add up to 6 locations. The calculator finds the window where every added location overlaps simultaneously, which shrinks quickly as you add more spread-out regions.
Know your overlap. Let Asa handle the rest.
Once you know when your team overlaps, Asa keeps everyone's hours, availability and project status in one place — across Slack, Teams and Telegram.