[REVISION HISTORY]

August-September 2026 Moon Phases: Cultural and Scientific

Updated 20 times since CLSTR started tracking revisions of this situation.

What changed

2026-09-14 11:34 UTC → 2026-09-17 08:51 UTC · added ~~removed~~

The August-September 2026 lunar cycle continues to be tracked through both cultural beauty practices and scientific astronomical monitoring. A lunar calendar released in late July 2026 provides guidance for beauty treatments based on moon phases. It suggests cutting hair during the waxing period (20–27 August) to encourage growth, while the waning phases (1–5 August and 29–31 August) are recommended to maintain hair length. These practices, rooted in astrology and biodynamic agriculture, are circulated in English and Spanish and are followed by millions despite a lack of scientific evidence. Astrological observations for the mid-month period noted the Moon entering its waxing crescent phase in Libra on 14 August. This transit is associated with themes of balance, harmony, and personal connections. Concurrent scientific observations from NASA and the National Institute of Meteorology (Inmet) track the Moon's physical progression. Following a New Moon on 12 August, the Moon transitioned into a waxing crescent phase. By 20 August, the Moon reached its First Quarter phase, followed by the Waxing Gibbous phase on 21 August. Data from Inmet indicates the Full Moon phase began on 28 August. This coincided with a partial lunar eclipse observed between the night of 27 August and the early morning of 28 August; at the peak of the eclipse at 01:13 Brasília time, approximately 96.2% of the lunar disk was within the Earth's umbra. By 31 August, the Moon was in a Waning Gibbous phase in Aries with approximately 86% illumination. In early September, the Moon entered a waning crescent phase. On 7 September, illumination was approximately 18%, allowing for the naked-eye observation of the Aristarchus Plateau. By 9 September, illumination decreased to between 3% and 4.65%. In mid-September, the Moon entered a New Moon phase. On 15 September, visibility was approximately 16%, increasing to 33% by 17 September.

Versions

Only revisions since CLSTR began indexing content versions appear here. Select a version to see what changed compared to the one before it.