World Timeline

The following is a list of events as they take place in the world of One Piece, starting from the past and heading toward the present storyline.

Note, however, that aside from the dates of "402", "1120", "1122", and "1127", all dates on this page are either estimates or non-precise time units and therefore are subject to change as the story progresses on.

Calendars
Two calendar systems are known to exist in the world. These are the Age of the Sea Circle (海円暦) and the Age of Heaven (天暦).

Age of the Sea Circle
This calendar was used by Mont Blanc Noland in his logbook around 400 years ago. Using Noland's logbook as a guide, it is possible to work out that the current storyline of One Piece takes place in the sixteenth century within the Sea Circle Calendar. Based on exact dates given by Noland, the month-day division in this calendar appears to match the Gregorian calendar.

Age of Heaven
This is the calendar that was used when Nico Robin pretended to recite the history of Alabasta from the Poneglyph in the Tomb of the Kings. In reality, the Poneglyph held information on Pluton. Due to the circumstances, it is unclear whether the information she provided was accurate. It is unknown how months and days were divided in this calendar, and it cannot be matched with the world timeline as no point of reference was given.

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