Timezone Tool
See every timezone on one grid, spot the overlapping working hours at a glance, and click any column to check the exact local time everywhere — no account, no paywall.
Most meeting planners either require you to sign in to save or rename cities, or gate the interactive slider behind a paid plan. This one doesn't — add as many zones as you want, and everything runs in your browser with nothing saved or sent anywhere. Columns are fixed UTC hours across the 24-hour day; each row shows what that instant looks like locally, including a small day-shift marker when the same moment lands on the previous or next calendar date in that zone — a detail that trips up a lot of hand-built scheduling spreadsheets.
Need the exact number of hours between two zones instead of a visual grid? The Timezone Comparison tool on the home page gives you live clocks side by side.
Related
Live clocks across any set of cities, updating every second.
Check if a zone's clocks are about to shift before you schedule.
Build a live countdown to the meeting once you've picked a time.