On Dec. 18, 2021 the moon enters into fullness in the sign of Gemini. This mercury-ruled sign brings about heightened excitment, mental stimulation, curiosity, creativity and understanding.
Gemini Sagittarius Axis
The energies culminate in Gemini, the sign of logical reasoning, intellectual processing and organization. This opposes Sagittarius, which focuses on larger concepts, ideals, beliefs and faith. Balance out belief through proper understanding of basic, bare-bones fundamental facts.
The final dispositor of Sun and Moon is Saturn. Behind the positive energy, there is an austere and stern need to come back to reality, beyond what we think or believe, and face limitation in both faith and reason.
Moon Trine Jupiter
The emotions and the mind expand, granting more wisdom, trust, discernment and understanding in some area of life (depending on your birth chart). Jupiter rules Sagittarius. The Sun is sextile Jupiter in Aquarius. There is opportunity, clarity and more abundance on offer.

Mercury Square Chiron
The lord of this Gemini full moon is in a cardinal earth sign and in aspect with Chiron, an asteroid that is about healing and pain. It is also in harmonious trine with Uranus (revolutionary thinking). Structured speaking and writing can lead to healong one’s identity or sense of self (Aries).
Some Other Considerations to Make of the Planets
Venus/Pluto Conjunct – 8th From Moon
Transforming, destroying or renewing relationships on a romantic or professional level will involve us using logic and communication to compartmentalize the experience.
Mars/Ketu Conjunct – 7th From Moon
Will, anger and fighting spirit may be hard to access now, as it is far away from our mental state in the youthful, curious sign of Gemini.
Saturn Square Uranus: Rulerships
Saturn, which is in control of the Full Moon Gemini, is in a fixed square. There are subtle fears of change, instability and being different.