Perfect Clock

A world clock that shows your calendar events and schedule across multiple time zones, on timelines of your cities.

Perfect Clock shows your calendar events on a world clock timeline, in every time zone you need. Each meeting sits across the clocks of all your cities, so you can see at a glance what time it is for everyone. No mental time zone math. It works right in Chrome's side panel. 🚀 Quick Start 1. Click "Add to Chrome" 2. Click the Perfect Clock icon – the world clock opens in the side panel 3. Add your cities 4. Drag the timeline to see what time it is everywhere at any moment ✨ 10 reasons to choose Perfect Clock 1️⃣ All your time zones on one timeline – no more converting time in your head 2️⃣ Drag to scrub through the day and instantly see the time difference between cities 3️⃣ Working hours highlighted for each city – find a meeting slot that works for everyone 4️⃣ Google Calendar integration – your real events appear right on the world clock 5️⃣ Browser notifications the moment an event starts 6️⃣ Lives in Chrome's side panel next to your email, docs or video call 7️⃣ Pop out into a full-width tab with one click 8️⃣ Keyboard shortcuts: jump by day, week or to the next event 9️⃣ 12h / 24h time and 6 date formats 🔟 Private by design: no account, no ads – everything stays in your browser 🌍 Plan Meetings Across Time Zones ➤ Working with a distributed or remote team? Add the cities of your colleagues and clients and drag the timeline – you'll see instantly when it's 10 AM in New York, 4 PM in London and 7 PM in Dubai. ➤ Working-hours highlighting shows where the overlap is, so you stop guessing and stop waking people up with late-night calls. ➤ Choose a home city, and all event times are shown relative to it. 📅 Your Google Calendar on a World Clock ➤ Connect your primary Google Calendar in one click (read-only access) and see your meetings laid out on the timeline, color-coded and stacked so nothing overlaps. ➤ Instantly see what local time each meeting falls on for every participant's city. ➤ Jump between events with [ and ] keys and get a notification when the next one starts. ⏱️ Always at Hand ➤ The side panel stays open while you browse, so your world time zone clock is always one glance away. ➤ Need a bigger view? Open Perfect Clock in its own tab for a full-width timeline. ➤ Prefer the web? The same app works at perfectclock.cc. ⌨️ Fast Navigation ➤ ← / → – previous / next day ➤ Shift + ← / → – previous / next week ➤ [ / ] – previous / next event ➤ N – jump to now, C – city search, S – settings ❓ Frequently Asked Questions 📌 Is Perfect Clock free? 💡 Yes. Add up to 3 cities, connect Google Calendar and get event notifications – all for free. 📌 Which cities can I add? 💡 Pick from a curated list of capitals and major cities, or search for any place in the world. 📌 Does it handle daylight saving time? 💡 Yes, time zones and DST changes are taken into account automatically. 📌 What does it do with my Google Calendar? 💡 Read-only access to your primary calendar, only after you click "Connect Google Calendar". Events go straight from Google to your browser – there is no Perfect Clock server in between. 📌 Is my data private? 💡 Yes. Your cities, settings and events are stored locally in your browser. No account, no tracking, no data collection. 📌 When do notifications arrive? 💡 When an event starts, while the timeline is showing the current time. 💬 Found a bug or have an idea? https://github.com/alexeipanov/perfectclock-support/issues 🌐 Web version: https://perfectclock.cc