How to Use the World Time Zone Meeting Planner & Overlap Matrix
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1
Select your meeting date and planned call duration.
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2
Add the cities or time zones of all meeting attendees.
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3
Drag the interactive 24-hour UTC slider to preview local times simultaneously for every location.
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4
Look for the green indicators (9 AM – 5 PM working hours) to avoid calling colleagues during sleeping hours.
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5
Click 'Copy Meeting Invite' to paste the converted schedule directly into Slack, Teams, or email.
Practical Example & Use Case
Common Real-World Scenario
Scheduling a sprint planning meeting between engineers in San Francisco (PST), London (GMT), and Karachi (PKT) at 14:00 UTC (6:00 AM PST, 2:00 PM GMT, 7:00 PM PKT).
Technical Notes & Limitations
Browser Engine Architecture
Calculates precise local times using browser `Intl.DateTimeFormat` with automatic Daylight Saving Time (DST) rules according to the IANA time zone database.
Frequently Asked Questions
Does this tool automatically account for Daylight Saving Time (DST)?
Yes. By selecting a specific meeting date, the tool computes local daylight saving time offsets dynamically for all Northern and Southern hemisphere regions.
What do the color-coded status badges mean?
Green represents standard business hours (9 AM–5 PM), amber represents flex hours (7–9 AM and 5–9 PM), and red highlights unsociable sleeping hours (9 PM–7 AM).
Can I remove or reorder cities?
Yes. You can add any combination of global cities and remove them with the ✕ button.