The sun is not reflecting on the moon
new moon
During a new moon phase, the moon is located between the Earth and the Sun, so it is not visible from Earth.
a
During a solar eclipse, the moon must be in the new moon phase.
The Moon's phase when it's between the Earth and the sun is called a New Moon. It's in this position where at times there is a Solar Eclipse of the Sun. Please refer to the link I have attached.
A "lunar" eclipse can not happen during the new moon phase it can only happen when the moon is full.
A spring tide occurs during the full moon phase of the moon. This is also known as the new moon phase and the moon is located between the earth and the sun.
The phase of the moon that immediately precedes the new moon phase is the waning crescent. During this phase, a small sliver of the moon is illuminated, gradually decreasing in size until it becomes completely dark at the new moon. The waning crescent occurs after the third quarter phase and before the new moon.
During the new moon phase, the side of the moon facing Earth is not illuminated by the sun, making it impossible to see.
New moon.
New Moon
The moon will disappear when it is in the new moon phase, as ironic as that sounds.