1. When the moon is located on'Sak' (1 lunar day)
-The thin sun-moon-earth is positioned side by side, so you can't see the moon from the earth.

2. When the moon is located on the'crescent moon' (4 lunar day)
-It becomes a crescent moon where you can see a little bit of the moon.

3. When the moon is located on the'Sanghyeon Moon' (8th lunar day)
-The shape of the moon gradually filled up and became the moon. The moon can be seen when the sun-moon-earth is at a right angle as shown on the screen.

4. When the moon is located on the “full moon” (15th lunar day)
-It's a full moon where you can see the full moon. The full moon can be seen when placed side by side in the order of the sun-earth-moon.

5. When the moon is located on the'Hahyeondal' (23 lunar day)
-The shape of the moon gradually decreased and became Ha Hyun-moon. The lower hyeon-moon can be seen when the sun-moon-earth is at a right angle as shown on the screen.

6. If the moon is located on the'old moon' (27th lunar day)
-It becomes a'old moon' where you can see a little bit of the moon.