On the fourth day of December, one can start burning the candles for the Advent. Lighting one candle for tha day, adding another candle for the next day and so on until the whole Advent Candlabra is lit. This makes a beautiful sight.
With the fairly consistent and measurable burning of a candle, a common use was to tell the time. The candle designed for this purpose might have time measurements, usually in hours, marked along the wax.
The Sung Dynasty in China (960–1279) used candle-clocks. By the 18th century, candle-clocks were being made with weights set into the sides of the candle. As the candle melted, the weights fell off and made a noise as they fell into a bowl.
A form of candle-clock was used in coal-mining until the 20th century.
In the days leading to Christmas some people burn a candle a set amount to represent each day, as marked on the candle. The type of candle used in this way is called the Advent candle, although this term is also used to refer to a candle that decorates an Advent wreath.
In our family we use the Advent Calendar. There are 25 small boxes, or doors, to be opened. The first day of December one of our children get to open that door. Inside is a small piece of chocolate. As each day passes and more doors are opened on the Advent Calendar, various parts of a puzzle are beginning to show. When all the doors are opened, the puzzle is finished. There is a beautiful picture of Christ, the reason we celebrate Christmas.
The above information was written with permission from the National Candle Association.
Tobey Craft from http://tobeyscandles.com.