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World Time & Timezone Planner

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World Time & Timezone Planner

Visual 24-hour synchronized timeline to calculate optimal multi-city meeting windows and generate invitations.

Meeting Base Date:
Presets:
Add City / Timezone:
Business (09:00-18:00)
Flexible (07-09 / 18-22)
Sleep (22:00-07:00)
24-Hour Multi-City Synchronized Timeline (Click any hour to lock scrubber)
Selected Base Hour: 14:00
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Optimal Meeting Windows

System calculated all 24 hours across selected locations to find the best overlap slots with minimal disruption:

💡 Tip: Click any recommended slot to highlight the column and generate ready-to-use invite copy.

Multi-Timezone Meeting Invite Generator

Topic / Agenda:

Frequently Asked Questions (FAQ)

Q: How are Daylight Saving Time (DST) changes handled?

The tool utilizes standard browser Intl.DateTimeFormat timezone tables, dynamically applying DST rules for the exact chosen meeting date.

Q: What if there is zero green overlap across US, EU & Asia?

When time differences span 12+ hours, the algorithm highlights compromise slots (e.g. 09:00 AM in New York / 02:00 PM in London / 09:00 PM in Singapore) and recommends rotating host slots.

Q: What do the +1d and -1d indicators mean?

Indicators mark date boundary crossings. +1d denotes next day locally; -1d denotes previous day, preventing international date confusion.

Q: Is any scheduling data sent to servers?

Never. All timezone calculations and meeting invites run strictly locally in your browser memory.