Moon

The Moon is giant rocky white sphere that orbits the world of One Piece. It was often seen during night scenes. It was also 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 the moon however was burran and rocky with no lifeforms but Space Pirates mined here and the Spaceys tried to fight them. There is an ancient city on the moon with many other Spaceys and the technology there was high-advance. However there is a painting on the wall showing the Skypieans, Spaceys and Shandorans. How the civilization got to the moon remains a mystery.

Moons Progression

 * Chapter 28 - Waxing Cresent (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)
 * Chapter 514 - Waning Cresent

Trivia

 * You can use the moons progression of time as a indication for the Straw Hats journey. However, this makes it from the Kuro's attack on Merry in the Kuro arc to Luffy's arrival on Amazon Lily just 21 days. Considering the progression of time has often been argued in One Piece, this seems hard to accept.