The World Time

click on the addon icon to see different clocks.
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manifest.json
{
  "action": {
    "default_icon": {
      "16": "data/icons/16.png",
      "32": "data/icons/32.png",
      "48": "data/icons/48.png",
      "64": "data/icons/64.png"
    },
    "default_popup": "data/popup/popup.html",
    "default_title": "World Clocks"
  },
  "background": {
    "service_worker": "background.js"
  },
  "commands": {
    "_execute_action": {}
  },
  "description": "click on the addon icon to see different clocks.",
  "icons": {
    "16": "data/icons/16.png",
    "32": "data/icons/32.png",
    "48": "data/icons/48.png",
    "64": "data/icons/64.png",
    "128": "data/icons/128.png"
  },
  "manifest_version": 3,
  "name": "The World Time",
  "offline_enabled": true,
  "permissions": [
    "storage",
    "contextMenus"
  ],
  "short_name": "World Time",
  "update_url": "https://edge.microsoft.com/extensionwebstorebase/v1/crx",
  "version": "1.0"
}