Does this use local daylight saving rules?

Yes. It uses the browser time zone database for the chosen date.

Can I change work hours?

Yes. Choose the local start and end hour used for every selected city.

What if there is no overlap?

Try broader hours, fewer cities, or rotating meeting times.

Time Tools

Work Hours Overlap Calculator

This Work Hours Overlap Calculator helps you select cities and a workday window to find UTC hours where everyone is inside local work hours. Select cities and a workday window to find UTC hours where everyone is inside local work hours.

Date

Quick answer

Use this work hours overlap calculator to finish the task in one browser page. It is designed for fast checks, copyable results, and no account signup.

Cities

Workday start

Workday end

How to use this tool

Select cities and a workday window to find UTC hours where everyone is inside local work hours.

When this tool is useful

Use this for remote teams, agencies, recruiters, and client calls where you need a realistic shared availability window.

Example use case

Select New York, London, and Tokyo with 09:00–17:00 work hours to see whether a same-day overlap exists.

Example workflow

An operations manager can set local workday windows and check which UTC hours are reasonable for everyone.

Common mistakes to avoid

Checking a time without choosing the actual meeting date.
Ignoring daylight saving changes between regions.
Copying only one local time into the invite instead of showing every attendee their local time.

Frequently asked questions

When should I use this work hours overlap calculator?

Use it when the task is specifically work hours overlap calculator, rather than a broad world meeting planner.

Does it account for daylight saving time?

Yes, the browser time-zone database is used for the selected date, so DST-sensitive regions are handled based on that date.

How to use this page well

Start with the real meeting date, then compare a few candidate times instead of trusting one default slot. For two selected cities, the same clock time can feel very different depending on daylight saving, local work habits, and whether the meeting is one-time or recurring.

Pick the actual date so daylight saving rules are applied correctly.
Check at least two or three candidate times before choosing.
Copy the local-time summary into the calendar invite so every attendee sees the context.
For recurring meetings, re-check dates around March, October, and November when DST changes often create surprises.

Planning example

Use this before proposing recurring meetings, interviews, or customer calls. The goal is not only to find a technically possible overlap, but to avoid repeatedly assigning the worst hour to the same region.

Question	What to check
Main intent	custom work-hour overlap
Fairness	Rotate early or late slots when one region cannot fit normal work hours.
Calendar invite	Include every important local time, not just the organizer time.

Important limitation

Default 9-to-5 overlap is a starting point; teams with flexible schedules may accept early or evening slots. Always confirm the final event in a calendar app, especially for customer calls, interviews, webinars, launches, or meetings scheduled near daylight saving transitions.

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