first quarter (noun)

1. In the first quarter of the Moon's period of revolution around the Earth, the characters of the anime series discovered a mysterious ancient artifact.

2. Set in a futuristic world, the first quarter of the Moon's period of revolution around the Earth in this science fiction novel was filled with advanced technological advancements.

3. During the first quarter of the Moon's period of revolution around the Earth, the couple shared a romantic dinner under the starry sky.

4. According to ancient mythology, during the first quarter of the Moon's period of revolution around the Earth, the goddess of love and beauty appeared in a radiant form.