# Multi-Timezone Working-Hours Overlap Finder

Find meeting windows where 2–6 participants across time zones are all working. Computes UTC intersection, ranks by comfort, exports .ics.

> Canonical page: https://elysiatools.com/en/tools/meeting-timezone-overlap-finder

- **Category:** Utilities

- **Keywords:** timezone overlap, meeting planner, time zone converter, working hours, distributed team, remote meeting, ics export

## Overview

Find meeting windows where everyone is awake *and* on the clock — across 2 to 6 time zones.

**What it does.** You list each participant with their city (or IANA timezone, like `America/Sao_Paulo`) and their local working hours. The tool converts every participant's working window to UTC, finds the **intersection** where all of them are simultaneously working, removes lunch breaks, filters by shared working days, and ranks the resulting slots by how "civilized" the local time is for each person (nobody should be asked to join at 23:00).

**How it ranks slots.** Each overlap window gets a comfort score: the more participants for whom the slot falls inside 09:00–17:00 local, the higher it ranks. Slots that push anyone past 20:00 or before 07:00 local are flagged with a ⚠️ warning.

**DST is handled.** The tool uses the browser/runtime IANA timezone database via `Intl.DateTimeFormat`, so daylight saving transitions are respected for the week you analyze. Always pick the Monday of the week you care about — the analysis runs for 7 days from that date.

**Export to calendar.** The .ics file contains one all-day-style event per day for each overlap window, so you can drop it straight into Google Calendar / Outlook / Apple Calendar and see candidate times at a glance. Invitees are listed in the event description.

**Tips.**
- If there's no overlap at all, try widening one person's hours by an hour, or switch a 5-day to a 6-day work week.
- For US–Europe–Asia triads, the overlap is almost always in a narrow morning-UTC window; expect short slots.
- City names that aren't recognized? Use the IANA key instead (`Asia/Kolkata`, `Europe/Berlin`, `America/New_York`).

## Inputs

- **Participants (one per line: Name, City/IANA timezone)** (textarea): Alice, New York Bob, London Carol, Tokyo
- **Local work start (24h, e.g. 09:00)** (text)
- **Local work end (24h, e.g. 18:00)** (text)
- **Lunch break (e.g. 12:00-13:00, blank=none)** (text): e.g. 12:00-13:00 (leave blank for no lunch)
- **Working days** (select)
- **Week to analyze (Monday date)** (text): YYYY-MM-DD (defaults to next Monday)

## When to use

- When scheduling a sync meeting for a remote team spread across multiple continents and time zones.
- When you need to find a meeting slot that respects everyone's local working hours and avoids early mornings or late nights.
- When planning recurring or one-off meetings during weeks with daylight saving time transitions.

## How it works

- Enter your participants' names and cities or IANA timezones, then define the standard local working hours and optional lunch breaks.
- Select the working days configuration and specify the Monday date of the week you want to analyze.
- The tool converts all working windows to UTC, calculates the overlapping time slots, and ranks them based on local comfort scores.
- Review the ranked meeting windows and download the generated .ics file to import the slots directly into your calendar.

## Use cases

- Finding a viable 1-hour meeting window for a triad team in New York, Los Angeles, and London.
- Scheduling a comfortable weekly sync for a distributed team across London, Berlin, and Mumbai.
- Planning cross-border collaboration sessions for teams operating on different regional workweeks, such as Sunday-Thursday in the Middle East.

## Frequently asked questions

### How does the tool rank the meeting slots?

Slots are ranked by a comfort score: the more participants for whom the slot falls between 09:00 and 17:00 local time, the higher it ranks.

### Does the tool account for daylight saving time (DST)?

Yes, it uses the browser's IANA timezone database to accurately calculate DST offsets for the specific week you select.

### What should I do if no overlapping slots are found?

Try widening the local working hours, removing the lunch break, or changing the working days setting to include weekends.

### Can I use specific city names or do I need IANA timezone keys?

You can use common city names. If a city is not recognized, use its standard IANA timezone key, such as America/New_York.

### How do I import the results into my calendar?

Click the export option to download an .ics file, which you can then import into Google Calendar, Outlook, or Apple Calendar.

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