International Women's Day first emerged from the activities of labour movements at the turn of the twentieth century in North America and across Europe. Since those early years, International Women's Day has assumed a new global dimension for women in developed and developing countries alike.
The shadowed portion is entirely hidden from view. The first quarter and third quarter moons (both often called a half moon), happen when the moon is at a 90 degree angle with respect to the earth and sun. So we are seeing exactly half of the moon illuminated and half in shadow.
Answer: Many people grow up with the idea that the phases of the moon are caused by the shadow of the earth. The earth does cast a shadow (as does any object in sunlight), but the moon usually passes above or below it. When the moon does pass through the earth's shadow, it is called a lunar eclipse (see illustration at right). When the moon passes into the shadow of the earth, it can at first glance mimic some of the phases, but the effect is in fact very different.