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Timezone Meeting Planner

Compare time zones of two cities to find overlapping working hours for scheduling meetings.

City 1

City 2

Working Hours:Start:00 ~ End:00Time difference: 14 hours

How to Use Timezone Meeting Planner

Step 1: Select Cities

Choose two cities participating in the meeting. 24 major city timezones are supported.

Step 2: Set Working Hours

Configure the working hours range for both sides. Default is 9 AM to 6 PM.

Step 3: Check Overlap

Click 'Find' to visually see the overlapping working hours between the two cities.

Step 4: Schedule Meeting

Select a time from the blue overlap zone that works for both sides.

Use Cases

International Office Meetings

Find suitable video call times between headquarters and overseas branches during mutual working hours.

Global Project Collaboration

Schedule stand-up meetings that all multinational team members can attend.

Cross-Border Client Meetings

Determine optimal meeting times with international partners considering both parties' working hours.

Tips

Seoul to New York is 14 hours, Seoul to London is 9 hours difference.
Large time differences mean fewer overlap hours — flexible scheduling may be needed.
DST regions may shift by 1 hour seasonally (March-November).
If no overlap exists, consider early starts or late finishes for one side.
For recurring meetings, choose times that fall in morning or afternoon for both sides.

Frequently Asked Questions

A timezone is a region's standard time based on longitude divisions. Time differences are expressed relative to UTC (Coordinated Universal Time). South Korea is UTC+9, meaning 9 hours ahead of Greenwich, England. There are approximately 24 basic timezones worldwide, with some regions using 30 or 45-minute offsets.

This tool currently calculates based on Standard Time. Regions with DST (US, Europe) shift clocks 1 hour forward from March to November, potentially reducing the actual time difference by 1 hour during that period. For important meetings, please verify local times separately.

The current version supports two-city comparison. To compare three or more cities, check pairs sequentially (e.g., Seoul-New York, Seoul-London) and find times that overlap across all pairs.

Yes, you can freely set the start and end times. Default is 9:00-18:00, but it can be adjusted for flexible schedules, night shifts, or other work patterns.

For very large time differences (e.g., Seoul-Los Angeles, 17 hours), standard working hours may not overlap at all. Consider early starts, lunch-hour meetings, or primarily using asynchronous communication (email, messaging) with minimal synchronous meetings.

No. All timezone calculations are performed locally in JavaScript. No city selections or meeting schedules are sent to any server. The tool works offline.

International Meeting Time Coordination Guide

Time Management in Global Business

Coordinating meeting times across different timezones is a daily challenge in global business. When collaborating with teams in the US, Europe, or Southeast Asia from Korea, finding suitable meeting times that respect everyone's working hours is critical. Poor scheduling leads to participant fatigue and inefficiency.

Effective Timezone Management Strategies

Several strategies help when collaborating across large time differences. First, fix recurring meetings within mutual working hours. Second, default to asynchronous communication (email, Slack) and minimize synchronous meetings. Third, rotate meeting times so the burden doesn't fall on one side consistently. This tool helps visualize overlap times to quickly determine optimal meeting schedules.

Notice

This tool calculates time differences based on Standard Time. Regions with Daylight Saving Time may have different actual offsets seasonally. Always verify local times for important international meetings.

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