To determine the national average wage index for calendar year 2013, we multiplied the 2012 national average wage index of 44,321.67 by the percentage change in average wages from 2012 to 2013, as measured by annual wage data we tabulated.
A lunar eclipse occurs when the Moon passes directly behind the Earth into its umbra (shadow). This can occur only when the sun, Earth, and moon are aligned (in syzygy) exactly, or very closely so, with the Earth in the middle. Hence, a lunar eclipse can occur only the night of a full moon.
The creepily-named phenomenon is actually just a total lunar eclipse. The earth's shadow will block the sun's light from the moon. At the same time, light from sunrises and sunsets on the planet is reflected on the moon, causing it to turn an orange or even blood red color.