World Time Guides
50 original guides on DST, UTC, IANA zones, regional time zones, finance, legal deadlines, travel, and more.
50 guides
-
Daylight Saving Time (DST) Guide
How DST works, 2026 switch dates for major regions, and how to avoid the classic one-hour meeting mistake.
-
How to Schedule International Meetings
Practical methods for picking meeting times across time zones, overlap windows, and common mistakes.
-
UTC and World Time Basics
What Coordinated Universal Time is, how it differs from GMT, and how to use it for time differences.
-
What Is the IANA Time Zone Database
Understand IANA identifiers like Asia/Shanghai and why they are the global standard for software and scheduling.
-
International Date Line Explained
How the date line splits "today" from "tomorrow" and what it means for travel, flights, and business.
-
Half-Hour and Quarter-Hour Time Zones
Why India (UTC+5:30), Nepal (UTC+5:45), and others use non-whole-hour offsets — and how to convert correctly.
-
Jet Lag and Time Zone Adjustment
Practical tips to reduce jet lag after long flights: light exposure, sleep windows, and arrival-day planning.
-
Flight Times and Time Zones
How to read departure/arrival times on tickets, flight duration, and connections without missing a leg.
-
Remote Work Across Time Zones
How distributed teams set core hours, async norms, and avoid burnout from "always on" expectations.
-
Global Stock Market Trading Hours
Local open/close times for NY, London, Tokyo, Hong Kong, Shanghai and UTC overlap windows.