Guides

Time zone meeting planner guides: DST, conversion & scheduling.

Updated · ByThe Vibing Dev.

Everything you need to plan international meetings across time zones — and never mess one up again. Start with the DST 2027 dates, then use the conversion and scheduling guides to build a repeatable process.

Quick answer: the two dates that break the most meetings in 2027 are March 14–28 andOctober 31–November 7, when the US and Europe are on different DST schedules. Confirm every recurring meeting against those windows.

Daylight Saving Time 2027: Complete worldwide guide

Every 2027 transition date for the US, Europe, UK, Australia, New Zealand, Brazil, and Mexico. The "gap weeks" that break recurring meetings. Regions that don't observe DST. How this planner handles it automatically.

Read the DST 2027 guide →

Time zone conversion: the complete guide

Why abbreviations fail (CST = China/US/Cuba). IANA zones vs UTC offsets. Fractional offsets (India +5:30, Nepal +5:45). Common mistakes. The workflow for perfect conversions every time.

Read the time zone conversion guide →

Best practices for scheduling across time zones

The golden window concept. Rotating inconvenience. Shortening meetings. Async alternatives. Calendar invite hygiene. DST-proofing recurring meetings.

Read the scheduling best practices →

IANA time zone database: what it is and why it matters

The global standard behind every OS and browser. How the planner uses it via Intl API. Historical data. Political changes. Why hardcoded converters go stale.

Read the IANA database guide →

Reference library

Read the theory — then feel it work.

Every guide above describes the same free planner. Add your cities and watch the golden window appear.

Open the World Clock Meeting Planner →