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Time Zone Meeting Time Calculator

Find the best meeting time across multiple time zones with this free time zone meeting calculator. Compare local times for cities worldwide using IANA time zone database identifiers, identify business hours conflicts across UTC offsets, and automatically find meeting times that work for all participants using a scoring algorithm. Perfect for distributed teams, international clients, and remote workers who need to schedule meetings across time zones without the guesswork. Supports 28+ major cities including New York (America/New_York UTC-5), London (Europe/London UTC+0), Tokyo (Asia/Tokyo UTC+9), Sydney (Australia/Sydney UTC+10), and handles daylight saving time (DST) transitions automatically using the Intl.DateTimeFormat API. Calculates optimal meeting windows by maximizing business hours (9 AM to 5 PM local time) coverage across all selected time zones. No account required, runs entirely in your browser for instant scheduling results with timezone-aware date calculations.

How to Use This Tool

  1. Step 1: Select cities or time zones from the dropdown menu and click Add. Add as many locations as needed for your meeting participants.
  2. Step 2: Set your proposed meeting time using the time picker. The tool instantly shows what time it will be in all selected time zones with status indicators (Business hours, Evening, Night, Morning).
  3. Step 3: Click Find Best Meeting Time to automatically calculate the hour that maximizes business hours coverage across all selected time zones. The tool displays how many participants will be in working hours.

Why This Method?

Scheduling meetings across time zones is error-prone when done manually. People forget about daylight saving time changes, miscalculate offsets, or schedule meetings that land at 3 AM for some participants. This tool uses the browser's native Intl.DateTimeFormat API with timeZone support to handle all DST transitions and zone offset calculations automatically, ensuring accuracy regardless of the date.

The best time finder algorithm scores every hour of the day based on how many participants would be in business hours (9 AM to 5 PM local time). This ensures meetings land during reasonable working hours for the maximum number of attendees. The tool highlights whether each participant will be in business hours, evening, morning, or night, making it easy to spot conflicts before sending invites.