Time Zone Overlap Calculator for Remote and Distributed Team Blogs

Last reviewed: May 19, 2026

Every distributed team eventually hits the same wall: when can two people on opposite sides of the planet actually talk live? Counting it in your head is a trap, because daylight saving shifts the answer twice a year and the two zones rarely change clocks on the same weekend. This page is for remote-work and distributed-team publishers who would rather hand readers a tool than walk them through the arithmetic.

The widget below takes two cities and each side's working hours, then returns the window where both teams are online at once. Drop it into a post about scheduling across zones and a reader can find their own overlap in seconds, with daylight saving already handled for both ends.

The live widget

This is the working embed, not a screenshot. Pick two cities and set the hours, and the shared window appears.

Where it belongs on a remote-work site

Three spots where readers are wrestling with the clock and a live tool does more than a paragraph:

In a post on async versus synchronous work, as the reality check on how little live overlap two far-apart zones really share, which is often the argument for going async.
In a guide to running distributed standups or all-hands meetings, where the reader needs to pick a time that does not land at midnight for half the team.
On a hiring or onboarding page for global teams, so a candidate or new hire can see the daily window they would share with the rest of the group before they sign on.

Adding it to your page

Open the embed generator, choose the time zone overlap calculator, set a theme and width, and copy the single-line snippet. It runs inside its own iframe, so the widget never reaches your page styles or scripts. If you would rather keep your layout text-only, just link to the full time zone overlap calculator.

The embed carries one small visible credit line linking back to the calculator on our site. That link is what keeps the tool free, so please keep it in view rather than hiding it. The complete terms are on the publishers hub.

Frequently Asked Questions

Does it handle daylight saving time for both zones?

Yes. Each zone is a real named time zone, not a fixed offset, so the overlap reflects whether either side is currently on daylight time. This is exactly where manual conversion goes wrong, because the US and Europe change clocks on different weekends and the gap between, say, New York and London is briefly an hour off from its usual value.

Which time zones can readers choose?

The widget covers the major business zones across the Americas, Europe, Africa, the Middle East, and Asia Pacific, picked by city so a reader does not have to know their offset. They set each side's working hours, and the tool returns the window where both teams are at their desks.

Can readers find a slot that works across three locations?

The widget compares two zones at a time, which keeps it simple and unambiguous. For a three-location team, run it in pairs: find the overlap between the two furthest-apart zones first, since that is the binding constraint, then confirm the third sits inside that window. It is a quick way to see whether any shared hour exists at all.