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.
The moon reflects sunlight, which is why we are able to see it at all. There are four phases of the moon, or different shapes of the moon as viewed by those of us on Earth: 1  New moon, when the moon is not visible from Earth. 2  First quarter moon, when-after a new moon-one half of the moon is visible. 3  Full moon, when all of the moon is visible from Earth.