Excellent app. I don't understand why the last 2 updates for FF have blocked it.

tuyệt vời

Excelente herramienta para el trabajo

For legacy FF it was the best clock addon (until v4.2) .
The last webextension version for modern FF or Waterfox is making this addon great again. :)

sehr gutes Add-on! Viele Einstellmöglichkeiten!