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Viikko Nro – ISO Week Number in Your Toolbar version history - 1 version

Viikko Nro – ISO Week Number in Your Toolbar by Dawood Zafar

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Viikko Nro – ISO Week Number in Your Toolbar version history - 1 version

  • Be careful with old versions! These versions are displayed for testing and reference purposes.You should always use the latest version of an add-on.

  • Latest version

    Version 0.1.0

    Released Sep 26, 2026 - 272.39 KB
    Works with firefox 140.0 and later, android 142.0 and later
    Current ISO week number in your toolbar, plus week dates, Finnish flag days and school holidays. Type vk 42 in the address bar.

    Viikko Nro shows the current week number in your browser toolbar. Week numbers follow the international ISO 8601 standard used in Finland and much of Europe. The extension is made by viikkonro.fi

    Source code released under MIT License

    Download Firefox and get the extension
    Download file