The dark side of the moon NEVER faces the earth. It's in a state that they call "Tidal Lock". You and I can never see the dark side of the moon unless it's a picture taken from beyond or in orbit of the moon. Sometimes you can see the moon during the daylight if the conditions are right, but usually the sunlight washes it out from view.
The dark side of the moon and the side facing away from us are not necessarily the same location. When the moon is a crescent, part of the side facing away from us is being lit.
When the moon is passing in front of the sun the dark side is facing us. And it is daytime. That is why you don't see it.
The dark side of the moon NEVER faces the earth. It's in a state that they call "Tidal Lock". You and I can never see the dark side of the moon unless it's a picture taken from beyond or in orbit of the moon. Sometimes you can see the moon during the daylight if the conditions are right, but usually the sunlight washes it out from view.
The dark side of the moon and the side facing away from us are not necessarily the same location. When the moon is a crescent, part of the side facing away from us is being lit.