Moon

The Moon is giant rocky white sphere that orbits the world of One Piece. It was often seen during night scenes. The moon was labeled Fairy Vearth by Enel. It appears throughout the series, but the first time the moon was seen was Chapter 28 when Kuro use it as a signal to carry out his three years plan. The moon first appeared to look red/orange fancy cartoonish crescent, after that the moon begins to be hard sketched.

On Chapter 392, a Geocentric model of the One Piece world with 6 satellites (which includes their world's moon) can be seen at Ohara's Tree of Knowledge.

The moon seems to be considerable more accessible in One Piece world. Enel managed to go there using the Maxim, and the four Spaceys managed to go there traveling in balloons.

Ancient civilization
There is an ancient city on the moon named Birka where technology and architecture were highly advanced. From paintings on the walls we know some of its history: it was home to the ancestors of Skypieans, Shandorians, and Bilkans, but one day they left Birka and headed to the main planet. They left on the moon their creations - the robot-type creatures named Spaceys. Later, Enel arrived at the ruins of the ancient city, recharged the Spaceys, and decided to settle here.

Fairy Vearth
Current sky peoples appear to "forget" their origins, although the moon, called the "Fairy Vearth" and believed to be a place of dreams, remained a folk tale amongst the Bilkans.

Moons Progression
During the early chapters, it was possible to use the moon to create a estimated timespan for Luffy's adventures, presuming the One Piece world's timespan is equal to that of Earth's. In some cases, the phrase of the moon even gave the chapter its title.


 * Chapter 28 - Waxing Crescent (moon stage noted in title of chapter)
 * Chapter 95 - First Quarter
 * Chapter 107 - Waxing Gibbous
 * Chapter 152 - Full Moon (Chapters title)
 * Chapter 160 - Waning Gibbous
 * Chapter 213 - Waning Gibbous (heading onto half-moon)
 * Chapter 232 - Half Moon
 * Chapter 253 - Half Moon
 * Chapter 334 - Half Moon (heading to Last Quarter)

Over time this idea seemed to have been retired and it is no longer possible to use the moon as a time scale.

Trivia

 * Luffy and his group begin the story in the Northern Hemisphere of their world according to the phases of the moon.