Skip to main content

UTC · Coordinated Universal Time

World Time Kit

Hora mundial, conversor de fusos horários e ferramentas de datas

Veja a hora atual em qualquer lugar, converta fusos horários, planeje reuniões internacionais e calcule datas.

Sua hora local

UTC

11:29:12

domingo, 2 de agosto de 2026

Diferença UTC

UTC+0

Abbreviation

UTC

Horário de verão

No clock change

Fase lunar atual

Waning gibbous · 80%

Combine um horário entre fusos

Abrir o agendador completo →

Arraste pelas células de hora para escolher um intervalo. Cada cidade lê os mesmos instantes no próprio relógio, então o que você vê é o que cada participante vê.

Arraste pelas células para selecionar. Segure Shift para passos de 5 minutos.

Foque a seleção e use as setas para movê-la, ou Shift com as setas para mudar a duração. Os campos de início e duração fazem o mesmo sem mouse.

Nenhum intervalo selecionado — arraste pelas células ou defina a hora de início.

Abrir o agendador completo →

Cidades populares

Ver hora mundial →

Mudanças de horário nos próximos 45 dias

Time Changes Worldwide →

Ferramentas de fuso horário

Calendário e feriados

Calculadoras e cronômetros

Sol e lua

Para que as pessoas usam

Why world time still trips people up

The planet runs on one physical timeline but thousands of local conventions. Offsets come in half-hour and even 45-minute steps, daylight saving rules differ by country and change by law, and the same abbreviation can point at three different zones. Getting a call time wrong by an hour is one of the most common — and most avoidable — scheduling mistakes.

Every tool on this site works the same way under the hood: your input is converted to UTC using the IANA time zone database, calculated there, and converted back for display. That single discipline is what keeps results correct across DST transitions, leap years, month-end quirks and the international date line.

Perguntas frequentes

What is my current time zone?

Your device already knows: it reports an IANA time zone such as America/New_York or Asia/Seoul. Open any city page on this site and it will show your detected zone in the time-difference line. One zone can cover many countries, and one country can span many zones.

Why does the time difference between two cities change during the year?

Daylight saving time. Regions that observe it move their clocks forward in spring and back in autumn — on different dates in different countries. Two cities that are 9 hours apart most of the year can briefly be 8 or 10 hours apart while only one of them has switched.

What is UTC?

Coordinated Universal Time is the global reference clock. Every time zone is defined as an offset from UTC (like UTC+9 or UTC-5). Aviation, computing and science use UTC so that everyone shares one unambiguous timeline; all conversions on this site go through UTC internally.

How does daylight saving time affect meetings?

A recurring meeting set for 9:00 in one city drifts by an hour for participants elsewhere whenever either side switches clocks. The safest habit is to re-check international meetings in the weeks around March/April and October/November, when most transitions happen.

Can two countries use the same time zone?

Yes, constantly. UTC+1 covers most of western and central Europe; China, Singapore, Malaysia, the Philippines and Western Australia all sit at UTC+8. Sharing an offset does not mean sharing DST rules, though — which is why IANA zone names matter more than offsets.

Why are time zone abbreviations sometimes confusing?

Because they are not unique. CST can mean Central Standard Time (UTC-6), China Standard Time (UTC+8) or Cuba Standard Time (UTC-5); IST can be India, Israel or Irish Standard Time. Use city names or IANA identifiers like Asia/Shanghai when precision matters.