Time zone guides
Editorial articles to help you schedule across borders without mistakes. Each guide links to live country clocks and the comparator.
How to schedule international meetings without time zone mistakes
A practical workflow for picking meeting times across countries, accounting for daylight saving and calendar rollovers.
GuideWhat is daylight saving time and how it affects video calls
Understand DST transitions, who still observes them, and how to avoid surprise one-hour shifts on calls.
GuideHow to use the Countries Time zone comparator
Step-by-step tutorial for comparing two to four countries with a shared reference instant.
GuideUS time zones explained: Eastern to Hawaii
Map the six US time zones, DST exceptions, and scheduling tips for coast-to-coast calls.
GuideCalling Latin America from Europe: practical time windows
Find workable call slots between CET/CEST and Latin American zones without ringing people at night.
GuideUTC vs local time: what schedulers need to know
Learn when to think in UTC, when to use local wall time, and how IANA zones bridge both.
GuideCommon time zone mistakes (and how to avoid them)
Seven frequent pitfalls—from 'EST' ambiguity to half-hour offsets—and fixes for each.
ComparisonTime difference between Spain and Mexico (with examples)
How many hours ahead is Spain vs Mexico City? Worked examples for calls and meetings.
ComparisonTime difference between Spain and Argentina
Spain vs Buenos Aires offsets year-round with scheduling examples.
ComparisonTime difference between Spain and Colombia
Madrid vs Bogotá: fixed UTC-5 in Colombia and seasonal shifts in Spain.
ComparisonTime difference between the United States and the United Kingdom
US Eastern vs London: how DST on both sides changes the gap.
ComparisonTime difference between the United States and Japan
Tokyo vs US Eastern and Pacific with fixed JST year-round.
ComparisonTime difference between the UK and India
London vs India UTC+5:30 half-hour offset explained.
ComparisonTime difference between Germany and the United States
Berlin vs US Eastern and Central for transatlantic meetings.
ComparisonTime difference between Australia and the United Kingdom
Sydney vs London across DST seasons in both hemispheres.
ComparisonTime difference between Mexico and Brazil
Mexico City vs São Paulo for Latin American coordination.
ComparisonTime difference between South Korea and Japan
Seoul and Tokyo share JST/KST year-round alignment.