World Clock

Coordinating across time zones is one of those small tasks that quietly eats up time every single day — figuring out whether it's too early to call a colleague in London, whether a Tokyo office is still open, or what time a live event airs where you are. This World Clock tool solves that by showing the current time in multiple cities at once, side by side, so you can compare them at a glance instead of doing mental math or switching between separate searches for each location. It's built for anyone who works with remote teams, has family or friends abroad, follows international markets, or just needs to know what time it is somewhere else right now.

It opens with New York, London, Tokyo and Sydney, and you can add any of 20 cities across the Americas, Europe, the Middle East, Asia and Oceania, or remove the ones you don't need. Each card shows the city's time to the second, its date, its current zone abbreviation, and how far it is ahead of or behind you (to the half hour for places like India), and the card colour changes with the time of day there — morning, afternoon, evening or night — so you can see at a glance who is likely awake.

The times follow each city's daylight saving rules automatically, and a 12 Hour / 24 Hour button switches the display format. Your city list and format are saved in your browser, so the panel you build is waiting the next time you open the page on the same device.