Time that makes sense

World time, week numbers and calendars — in one clear place

Check a live clock, plan across time zones, find an ISO week or count working days. Country rules are applied where they matter.

Convert a time Find a week

21 tailored countriesIANA time zonesLocal weekend rules

Your local time--:--:--

Detecting your date…

Detecting time zone…—

Find a city, country or tool

Popular world clocks

Live local time and the difference from your own clock.

🇺🇸 United StatesNew York--:--Comparing…🇬🇧 United KingdomLondon--:--Comparing…🇦🇺 AustraliaSydney--:--Comparing…🇮🇪 IrelandDublin--:--Comparing…🇸🇬 SingaporeSingapore--:--Comparing…🇨🇳 ChinaBeijing--:--Comparing…🇧🇷 BrazilSão Paulo--:--Comparing…🇲🇽 MexicoMexico City--:--Comparing…

Plan dates and meetings

TZTime-zone converterDate-aware offsets, including half- and quarter-hour zones.→MeetMeeting plannerCompare working-hour overlap across locations.→WorkWorking daysCountry-specific weekends and national holidays.→SunSunrise & sunsetAny supported date, calculated locally in your browser.→

Country guides

Every country has its own time-zone, weekend and holiday notes.

🇺🇸United States7 featured locations · USD→🇬🇧United Kingdom3 featured locations · GBP→🇨🇦Canada4 featured locations · CAD→🇦🇺Australia6 featured locations · AUD→🇩🇪Germany3 featured locations · EUR→🇫🇷France3 featured locations · EUR→🇪🇸Spain4 featured locations · EUR→🇮🇹Italy3 featured locations · EUR→🇮🇩Indonesia4 featured locations · IDR→🇯🇵Japan3 featured locations · JPY→🇭🇷Croatia3 featured locations · EUR→🇪🇬Egypt3 featured locations · EGP→🇮🇪Ireland3 featured locations · EUR→🇳🇿New Zealand5 featured locations · NZD→🇿🇦South Africa4 featured locations · ZAR→🇸🇬Singapore1 featured location · SGD→🇵🇭Philippines3 featured locations · PHP→🇳🇱Netherlands3 featured locations · EUR→🇨🇳China5 featured locations · CNY→🇧🇷Brazil6 featured locations · BRL→🇲🇽Mexico6 featured locations · MXN→

Exact ISO week dates

Find every Monday-to-Sunday ISO week in 2026 and 2027.

Browse week numbers

Transparent methodology

See how time zones, weekends, solar times and holiday data are handled.

Read methodology