WorldTime GridTime Zone Meeting Planner
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WorldTime Grid tool

Time-zone tools

Browser-based calculators for time conversion, working-hour overlap, daylight-saving transitions, the date line and UTC offsets.

Tool 1

Single Time Converter

Convert one city’s local date and time into another named time zone.

Select

Tool 2

Working Hours Overlap Calculator

Find candidate meeting times for two to ten cities using local work preferences.

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Tool 3

Daylight Saving Time Checker

Inspect date-specific UTC offset changes detected for a city and year.

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Tool 4

International Date Line Visualizer

See how one instant maps to the previous, same or next date across regions.

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Tool 5

UTC Offset vs IANA Time Zone

Compare a fixed UTC offset with a named zone whose rules can vary by date.

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