---
title: "Extra Time Zones for Google Calendar – Chrome extension stats, history and permissions"
description: "182 users, rated 4.50 by 2 people. Version 1.2, updated 2025-07-30. Requests 3 permissions."
url: "https://extensiontracker.com/extension/kophigkhokgmijcobalnljkcaoihlnfe"
---

# Extra Time Zones for Google Calendar

Live in the Chrome Web Store.

- Users: 182
- Rating: 4.50 from 2 ratings
- Last checked: 2026-09-27 04:36 UTC
- Users gained in 7 days: – (needs a week of history)
- Users gained in 30 days: – (needs a month of history)
- Rank by users: #52,097 of 264,703 live extensions
- Rank in Workflow & Planning: #11,829 of 44,474

## The listing

What the Chrome Web Store shows, as of the last check.

Summary from the listing:

> Add multiple timezones to Google Calendar

- Extension ID: `kophigkhokgmijcobalnljkcaoihlnfe`
- Developer: [lukaso](https://extensiontracker.com/developer/u7b3567c0fbf830a891e795507b19a129)
- Category: [Productivity › Workflow & Planning](https://extensiontracker.com/category/productivity/workflow)
- First published: 2025-07-16
- Last updated: 2025-07-30
- Version: `1.2`
- Size: 41.99 KiB
- Minimum Chrome: 88
- Languages (1): English
- Privacy policy: `https://lukaso.github.io/extra-timezones-privacy/`
- Chrome Web Store: <https://chromewebstore.google.com/detail/extra-time-zones-for-goog/kophigkhokgmijcobalnljkcaoihlnfe>
- View the code or download the CRX, in CRX Viewer: <https://robwu.nl/crxviewer/?crx=https%3A%2F%2Fchromewebstore.google.com%2Fdetail%2Fkophigkhokgmijcobalnljkcaoihlnfe>

## Users over time

One row per check, newest first, as shown on the Chrome Web Store.

| Checked | Users | Rating | Ratings |
| --- | ---: | ---: | ---: |
| 2026-09-27 | 182 | 4.50 | 2 |

## What changed

Every change found on a check, newest first.

No changes found since tracking began on 2026-09-27.

## What it can access

From the extension's manifest, in plain language.

### Sites

- `https://calendar.google.com/*`: calendar.google.com

### Sites where it runs scripts

- `*://calendar.google.com/*`: calendar.google.com

### Browser features

- `activeTab`: The tab you're on, only after you click the extension
- `storage`: Save settings and data in your browser

## About this data

Collected from the extension's public Chrome Web Store listing. It's checked every month, and again whenever a new version appears. Last checked 2026-09-27 04:36 UTC; next check around 2026-10-06.

How the data is collected: <https://extensiontracker.com/methodology>.

## Cite this page

Extension Tracker. “Extra Time Zones for Google Calendar” (kophigkhokgmijcobalnljkcaoihlnfe). Chrome Web Store data, last checked 2026-09-27. https://extensiontracker.com/extension/kophigkhokgmijcobalnljkcaoihlnfe. Accessed 2026-09-28.

```bibtex
@misc{extensiontracker_kophigkhokgmijcobalnljkcaoihlnfe,
  title   = {Extra Time Zones for Google Calendar (kophigkhokgmijcobalnljkcaoihlnfe)},
  author  = {{Extension Tracker}},
  year    = {2026},
  note    = {Chrome Web Store data, last checked 2026-09-27},
  url     = {https://extensiontracker.com/extension/kophigkhokgmijcobalnljkcaoihlnfe},
  urldate = {2026-09-28}
}
```

---

From Extension Tracker, a public record of the Chrome Web Store: <https://extensiontracker.com/extension/kophigkhokgmijcobalnljkcaoihlnfe>. It isn't affiliated with Google. The data is free to reuse under CC BY 4.0 (<https://creativecommons.org/licenses/by/4.0/>), crediting Extension Tracker. Extension, developer and list pages come as Markdown too: add `format=md` to the address, as in `https://extensiontracker.com/extension/{id}?format=md`.