If the sun is going down, you can tell how many minutes you have left until it hits the horizon by extending your arm towards the sun with your palm facing you, and count the number of fingers you can fit between the sun and the horizon: each finger counts for five minutes. – Vibeke Christensen, Attorney
A cool tool is anything useful that is superior to comparable items. If you think this tool is inferior suggest a better one. You are welcome to insult a tool, but comments containing insults to individual people will be deleted. Corrections of fact are always welcomed, if stated politely. Recommendations of better tools are dearly wanted and may be elevated to the front page.