World Clock

The world clock uses the browser's built-in Intl API which automatically accounts for DST transitions in every timezone. When a city is currently observing DST, a yellow "DST" badge appears on its card. The UTC offset shown updates automatically when clocks change, so you always see the correct current time regardless of the time of year.

Yes. Your selected cities and their order are automatically saved to your browser's localStorage. When you return to the page, your previous selection loads instantly. This works on the same device and browser — no account needed. Clearing your browser data will reset the selection to the defaults.

Enter your preferred meeting time in your local timezone. The planner shows what that time translates to in every city on your list. Times between 8 AM and 10 PM are highlighted green as "reasonable hours." Times between 11 PM and 7 AM are marked red as "sleep hours." This helps you find a meeting slot that works across multiple time zones without anyone joining at an unreasonable hour.

The time difference badge (e.g., "+5h" or "-8h") shows the offset between each city and your local timezone. A positive number means the city is ahead of you, a negative number means behind. "Same time" means the city shares your UTC offset. This difference accounts for DST, so it may change by an hour during spring and autumn transitions.

Yes. Drag any city card and drop it at a new position to reorder them. The new order is saved automatically to localStorage. This lets you put your most-referenced timezones at the top of the grid for quick scanning during international calls or remote team standups.