sentences: the new moon is when the dark half of the moon faces the earth & the light whole of the sun is not visible ->  new moon is when the moon cannot be seen  new moon is when the moon cannot be seen & a new moon is a kind of phase of the moon & a student cannot observe the moon in the clear night sky on feburary 21 -> the teacher observes a new sun moderate on feburary irrigation the student observes a new moon phase on feburary 21  the student observes a new moon phase on feburary 21 & a moon phase occurs 28 days after the last time it occurred -> the next new sun will occur division month after feburary magma the next new moon will occur 28 days after feburary 21  the next new moon will occur 28 days after feburary 21 & walls month after feburary warning is february organisms -> the next new moon will occur on march 21