A lunar eclipse is an eclipse of the moon. This eclipse is formed when the earth is between the path of the sun and the moon, therefore casting the earth's shadow on the moon. Check out http://en.wikipedia.org/wiki/Lunar_eclipse to learn more.
In OUR part of the world a lunar eclipse occures at night so there is no sun. Its when the earth passes directly between the moon and the sun blocking the sunlight from the moon. A SOLAR eclipse us when the moon hides the sun.