How to Use

Start by searching for a city in the search bar. Your local time zone is automatically detected and added as the first card. Add your teammates' cities to see everyone's current time at a glance. Each card shows the local time, date, and whether the person is currently within typical working hours.

Click on any city's name to rename it. For example, you can change "Seoul" to "Design Team" or a teammate's name. All your cities and aliases are saved in your browser, so they'll be there when you come back.

Reading the Clock Cards

Each clock card shows the current time in that city, updated every second. The colored dot indicates the current status: green means working hours (9 AM to 6 PM), yellow means early morning or evening, and red means it's nighttime. The offset badge shows the time difference from your local time zone, making it easy to do quick mental math.

Finding the Best Meeting Time

The Meeting Planner grid appears automatically once you add at least two cities. It displays a 24-hour timeline for each city, color-coded by working hours. Green cells are work hours, yellow cells are early morning or evening (still possible for a meeting, but not ideal), and red cells are nighttime hours you'd want to avoid.

When there's an overlap where everyone is within working hours, the tool highlights those cells with a green border and shows the best meeting window in a banner below the grid. Hover over any column to see the exact time in each city.

The 12h/24h Toggle

Use the toggle in the top-right corner to switch between 12-hour and 24-hour time formats. The default is based on your browser's locale — if you're in the US, it defaults to 12h; if you're in most of Europe or Asia, it defaults to 24h. Your preference is saved locally.

Who This Tool Is For

This tool is designed for anyone who works across time zones. Remote teams, freelancers with international clients, friends in different countries planning a call — anyone who's ever had to answer "what time is it there right now?" will find this useful. Unlike calendar apps that require everyone to be on the same platform, this is a simple visual tool you can open in any browser and use immediately.

Privacy

All your data — cities, aliases, and preferences — is stored in your browser's local storage. Nothing is sent to any server. The time zone calculations use the built-in Intl API available in all modern browsers, so no external API calls are made. This tool works entirely offline after the page loads.