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 moves into the earths shadow blocking the sunlight that reflects off the moons bright surface. >the earths shadow begins as a narrow bank of darkness at the edge of the moon then gradually moves to cover the entire moon. >the moon does not go completely black since a small amount of light does continue to fall on the moon.