Perfect Clock от Alexei Panov

Perfect Clock shows your calendar events on world clock timelines of your cities, so you can see your whole schedule across multiple time zones at a glance. Every meeting lines up with the local time in all your cities – no mental time zone math. Google Calendar is supported today, with more calendar sources on the way. It works right in Firefox's sidebar.

🚀 Quick Start
1. Click "Add to Firefox"
2. Click the Perfect Clock button in the toolbar – the world clock opens in the sidebar
3. Add your cities
4. Connect your calendar in Settings and see your events across all time zones

✨ 10 reasons to choose Perfect Clock
1⃣ Your calendar events and schedule shown in every time zone you need
2⃣ See what local time each meeting falls on in all your cities – at a glance
3⃣ Working hours highlighted in your cities – spot meetings outside someone's workday
4⃣ Browser notifications the moment an event starts
5⃣ Timelines of all your cities lined up together – drag to scrub through the day
6⃣ Lives in Firefox's sidebar next to your email, docs or video call
7⃣ Pop out into a full-width tab with one click
8⃣ Keyboard shortcuts: jump by day, week or to the next event
9⃣ 12h / 24h time and 6 date formats
🔟 Private by design: no sign-up, no ads, calendar events never stored

📅 Your Calendar Across Time Zones
➤ Connect Google Calendar in one click and see your calendar events laid out on the timelines of your cities.
➤ Every event lines up with the clocks of all your cities – instantly see that a 10 AM call in New York is 3 PM in London.
➤ Jump between events with [ and ] keys and get a notification when the next one starts.

🌍 Schedule Meetings with Remote Teams
➤ Working with a distributed team or clients abroad? Add their cities and drag the timelines to find a time that works for everyone.
➤ Working-hours highlighting shows where the overlap is, so you stop waking people up with late-night calls.
➤ Choose a home city, and all event times are shown relative to it.

⏱ Always at Hand
➤ The sidebar stays open while you browse, so your schedule and time zones are always one glance away.
➤ Need a bigger view? Open Perfect Clock in its own tab for a full-width view.
➤ 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 your calendar and get event notifications – all for free.

📌 Which calendars are supported?
💡 Google Calendar today. Support for more calendar sources is in the works.

📌 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 and timezone changes?
💡 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". The same Perfect Clock account works on the website and in the add-on: connect once, and the add-on signs in without asking again. Events are shown, never stored.

📌 Is my data private?
💡 Yes. Your cities, settings and your own events are stored locally in Firefox. An account exists only if you connect Google Calendar, and you can delete it in Settings. No ads. Anonymous feature-usage statistics are sent only if you allow them when installing — never your calendar or anything you type.

📌 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 with public calendars – trading sessions, sports, shortwave schedules and more, on the same timelines:
➤ https://perfectclock.cc/categories
➤ Shortwave & radio: https://perfectclock.cc/shortwave
➤ Markets: https://perfectclock.cc/markets