When is the September 2026 full moon in Argentina?

The full moon in Argentina will appear on Saturday, Sept. 26, 2026, according to the lunar-phase calendar published by the Naval Hydrographic Service. During the final week of September, the Moon will be visible as a fully illuminated disk.

The Moon passes through four main phases during the month: new moon, first quarter, full moon and last quarter. The cycle lasts about 28 days, so the dates shift from one month to the next and do not always match the dates printed in a standard calendar.

A full moon, or plenilune, occurs when the side of the Moon facing Earth receives sunlight and appears almost completely illuminated. Astronomy enthusiasts use lunar calendars to plan sky observations, while the phases also feature in popular beliefs and traditions. Some esoteric practices claim that the Moon can affect daily life or people’s moods, and myths about haircuts attribute different effects to particular lunar phases. The article notes that no scientific evidence supports those claims.