# ClockinSync - Timezone Converter & World Clock

> Timezone Converter and World Clock for remote teams. Track multiple timezones, get DST warnings, public holiday alerts, set reminders, and auto-detect times on any webpage. Supports 23,000+ cities worldwide.

Canonical page: [https://chrome-stats.com/d/clockinsync-timezone-converter](https://chrome-stats.com/d/clockinsync-timezone-converter)

## Overview

- **ID:** `clockinsync-timezone-converter`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** ClockinSync
- **Category:** search-tools,social-communication,alerts-updates
- **Daily users:** 1
- **Version:** 1.26.59
- **Last updated:** 2026-05-11
- **First published:** 2026-05-08
- **Size:** 611 KB
- **Data as of:** 2026-09-07
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/clockinsync-timezone-converter/)
- **Website:** [https://www.clockinsync.com](https://www.clockinsync.com/)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/clockinsync-timezone-converter/privacy/](https://addons.mozilla.org/firefox/addon/clockinsync-timezone-converter/privacy/)

## Description

Never miss a meeting across time zones again.

ClockinSync is a world clock and timezone converter built for freelancers, agencies, and remote teams. Track multiple time zones, convert time instantly, monitor working hours, get automatic DST warnings, and see public holidays for every city you track all in one place, without switching tools.

Why Teams Choose ClockinSync
Working across international time zones creates daily friction:
<ul><li>"What time is that for you?" delays slowing every conversation</li><li>Scheduling mistakes caused by Daylight Saving Time shifts</li><li>Missing public holidays that make meetings pointless</li><li>Manual time conversions eating into your day</li><li>Constant switching between clocks, calendars, and conversion tools</li></ul>
ClockinSync eliminates all of it.

🌍 World Clock with 23,000+ Cities
Add cities from a database of 23,000+ global locations and rename each timezone to match your real workflow:
<ul><li>Client - New York</li><li>Dev Team - Berlin</li><li>Agency - Mumbai</li></ul>
Every timezone you manage, visible in one clean world clock interface.

⏰ Automatic DST Warnings
Daylight Saving Time shifts catch remote teams off guard every season. ClockinSync automatically detects upcoming DST changes across all your tracked timezones and warns you in advance, so your international schedules stay accurate before and after every clock change.

🎉 Public Holiday Warnings
See upcoming public holidays for every city and timezone in your world clock. Know instantly when a client location or team city has a national holiday approaching, so you stop booking meetings that nobody will attend.

🟢 Working Hours &amp; Availability Overlap
<ul><li>Set global working hours across your entire team</li><li>Customize working hours per timezone for part-time workers and shift schedules</li><li>See availability overlap across all time zones at a glance</li></ul>
No more guessing who is online and when.

🧩 Clock Profiles - Organize by Client or Project
Group your world clock timezones into profiles:
<ul><li>Client accounts</li><li>Internal teams</li><li>Active projects</li></ul>
Switch between profiles instantly as your context changes throughout the day.

⏰ Reminders in Any Timezone
Schedule reminders based on any timezone in your world clock. ClockinSync fires them at exactly the right time with that you can set up to repeat each week/mon and also pre-alert you 15-30-1h before, so timezone-based reminders are always accurate and you stay organized.

⚡ /time Shortcode - Convert While You Type
Convert time without leaving your chat, email, or document:
<ul><li>/time 3pm London</li><li>/time 15:25 Berlin</li><li>/time now</li></ul>
Results appear instantly across all your saved timezones. Works in any text field, anywhere.

🌐 Automatic Timezone Detection on Any Webpage
ClockinSync scans every webpage you visit and automatically detects time expressions, meeting invites, scheduling emails, GitHub issues, job postings, event pages. Times convert to your local timezone inline, without any copy-pasting or manual conversion.

🧠 Natural Language Time Converter
Type time the way you think it in our search bar inside of extension:
<ul><li>10:00 PM New York</li><li>15:23 Tokyo</li></ul>
ClockinSync understands natural language and converts it instantly to your local time. No formats to memorize, no tools to open.

🧩 Popup or Side Panel — Your Choice
Use ClockinSync the way that fits your workflow:
<ul><li>Popup, quick timezone conversion on demand</li><li>Side panel, a persistent world clock workspace that stays open while you browse</li></ul>
Who Uses ClockinSync
<ul><li>Freelancers managing clients across multiple countries and international time zones</li><li>Agencies coordinating work across global regions and scheduling international meetings</li><li>Remote teams aligning daily standups, deadlines, and availability across time zones</li><li>Team leads planning sprints and reviews across distributed international teams</li><li>Anyone who regularly converts time, tracks world clocks, or schedules across timezones every day</li></ul>
ClockinSync — The world clock and timezone converter built for teams without borders.

## Rankings

- #104,583 — Overall

## Permissions and access

### Permissions

- `storage`
- `notifications`
- `alarms`
- `identity`

### Host permissions

- `https://api.clockinsync.com/*`

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** High risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/clockinsync-timezone-converter)