World Clock & Meeting Planner
Live clocks for cities worldwide plus a time-zone overlap grid to find the best meeting time across regions.
A world clock shows the current time in cities around the globe at a glance, and a meeting planner layers on a time-zone overlap grid so you can find a slot that works for everyone.
Add the cities or time zones you care about and the tool displays each local time, then highlights the hours that fall within working hours across all of them.
Coordinating across regions is where scheduling goes wrong, usually because of daylight saving shifts and date-line confusion. Seeing the zones side by side removes the guesswork.
How this calculator works
Each city is tied to a time zone defined by its offset from Coordinated Universal Time (UTC), the global reference. Local time is UTC plus or minus that offset, and many regions add an hour for daylight saving during part of the year, which the tool accounts for by using each zone's current rules. The meeting planner converts a candidate time to every selected zone at once and marks where all of them land inside typical working hours (for example, 9 a.m. to 5 p.m.), so the overlapping window is easy to spot even across a dozen zones.
What affects the number
- UTC offsets define each zone, and they are not all whole hours; some are 30 or 45 minutes off.
- Daylight saving time shifts many zones by an hour for part of the year, and start dates differ by country.
- The international date line means some zones are a calendar day apart.
- Working-hour assumptions determine which overlaps count as viable meeting times.
- Not every region observes daylight saving, so the gap between two zones can change seasonally.
- A city, rather than a raw offset, is the reliable input because it carries the local DST rules.
Frequently asked questions
How do I find a good meeting time across time zones?
Enter each participant's city, and the planner shows where their working hours overlap. The overlapping window is the range where a meeting falls within normal hours for everyone, which the grid highlights so you can pick a time quickly.
What is UTC?
UTC, Coordinated Universal Time, is the global time standard that every time zone is defined against. A zone is expressed as UTC plus or minus a number of hours, so converting between zones means adjusting by the difference in their UTC offsets.
How does daylight saving affect the times?
Many regions move their clocks forward an hour for part of the year, changing their offset from UTC. Because countries start and end daylight saving on different dates, the gap between two cities can shift by an hour seasonally, which is why using cities rather than fixed offsets is more reliable.
Why are some cities a day ahead?
The international date line, running roughly down the middle of the Pacific, separates calendar days. Places just west of it are a day ahead of places just east, so it can be tomorrow in one city while still today in another.
This calculator provides general estimates for educational purposes only and is not financial, medical, legal, or tax advice. Your actual results depend on your specific situation and current rates.