Mutable Magic: The Interplay of Sagittarius + Pisces
December leans into motion rather than stability. With so many planets moving through mutable signs, adaptability becomes the most useful skill of the month. Mutable energy guides transition, helping us adjust as plans change and expectations reshape. When ideas shift or assumptions fall away, it is not a sign that something has gone wrong. Instead, it keeps us awake to the present moment and willing to revise as we go.
By December 12th, 6 of the 10 planets will gather in Sagittarius and Pisces. Both signs are ruled by Jupiter, so meaning, growth, and possibility rise to the surface. These signs leap into experience without always knowing where they will land. Risk can feel energizing, especially when supported by curiosity and faith. Sagittarius pushes toward adventure, expansion, and action, while Pisces moves toward intuition, reflection, and feeling. Together they create exploration both in the physical and emotional realms.
A square between these two mutable signs sharpens this contrast. The pull between vision and surrender can stir doubt or restlessness, but friction often comes before insight. While most of us favor stability, having things shake up can feel like a breath of fresh air to others. Discomfort becomes directional. Slow down, listen, and let uncertainty open space for discovery. Mutable squares strengthen problem-solving and resourcefulness. This month favors exploration over control. Stay open, allow conversation to broaden possibilities and let change guide you.
Purpose + Possibility: Jupiter in Cancer’s Anchor
Jupiter in Cancer quietly guides December, shaping the movement of every planet traveling through Sagittarius and Pisces. His rulership creates a safe harbor this month. He brings comfort, belonging, and the reminder that connection is how we grow. Jupiter is the greatest benefic, and in cardinal water, he inspires generosity that takes root this whole holiday season. We gather closer to the hearth, and we remember who feels like home.
The Sun, Mars, Venus and Mercury continue their journey through Sagittarius, creating an inner planet cluster. This is quest energy in motion. We feel brave enough to write the next chapter, to begin again, and to claim a sense of purpose. The Sun makes sure we find the hero’s journey, Mars gives direction, Venus aligns our friends, and Mercury makes the dialogue sparkle. Personal stories open wide with infectious joy beckoning everyone to step forward and see what could happen.
Yet every story needs weather or challenges to create drama. Neptune and Saturn in Pisces add fog, mystery, and emotional depth. They introduce tension so that meaning can emerge. The plot thickens, and life asks us to pay attention.
As the personal planets meet these slower moving forces, interpretation becomes part of the path. We respond to what unfolds around us. We adjust our plans and find support in unexpected places. Ultimately, we find joy in what is still possible and affirm our beliefs.
Through it all, Jupiter steadies the center. Jupiter in the sign of his exaltation gives purpose, not just possibility. He grounds us in belonging and ties inspiration to empathy. Jupiter in Cancer nourishes this holiday season as he tends the emotional heart of December.
Monthly Dates of Note:
December 2: Venus in Sagittarius sextiling Pluto in Aquarius. Say yes to any social invitations today, especially those connected to work. The Moon will be opposing Mercury, which can make a night at home feel more seductive than going out on the town, but you may find a kindred spirit who matches your drive.
December 4: Full Moon in Gemini. This is a very talkative lunation ruled by Mercury in Scorpio. The Full Moon in Gemini highlights information, conversations, and decisions. Notice what you may have learned or overlooked in your previous interactions. Mercury in Scorpio adds depth, so important details may surface that were first ignored. Emotional honesty is key. Pay attention to what people actually mean, not just the words. The grand water trine with Jupiter in Cancer and Saturn in Pisces helps you see patterns in relationships or long-term plans. Use this Full Moon to review notes, emails, or agreements and clarify next steps. Pierce through the chatter with insightful questions.
December 6/St. Nicholas’ Day: Mercury in Scorpio trines Jupiter in Cancer. Be intentional in spreading good cheer today. Optimism and positive affirmations go a long way in creating support. Healing conversations and emotional connection come easily with these two planets in water signs. You could also find some incredible deals today if you are shopping around.
December 7: Mercury in Scorpio trines Saturn in Pisces. If you need to make a binding agreement, this is the day to sign on the dotted line. Strategic thinking blends with intuition. This is a great day for studying for exams and getting systems down to learn big concepts. Search for common ground and problem-solve with patience.
December 8: Mars in Sagittarius squares Saturn in Pisces. Frustration with progress can be a common theme of the day. With Jupiter directing both planets, you may find that the scope of a project feels too big or efforts feel scattered. Acknowledge the big feelings surrounding the disappointment and get clear about the boundaries and constraints before pushing on. Recenter the team’s vision and align the quest for next steps. Likely, there will be a breakthrough in the next couple of days as the astrology unfolds.
December 10: Mercury in Scorpio opposes Uranus in Taurus + Neptune stations direct in Pisces + Venus squares the Nodes. It’s a complex sky today. Discomfort can be a theme of the day when new information arises. Lean into not knowing the answers and see how creativity can swirl into possibilities. With Venus squaring the lunar nodes, you may see others shifting priorities or values. This can be wrestling with the concept of personal growth over what is familiar. It may be time to experiment with preferences. Neptune makes his final station direct in mutable water today. Today can feel like an exercise in detaching your ego.
December 11: Mercury in Scorpio trines Neptune in Pisces + Mercury ingresses into Sagittarius. Your intuition and symbolic communication may be sharper. Early morning dreams can be potent. Later, Mercury returns to mutable fire, where he favors the bigger picture over the finer details. Enthusiasm rises, but follow-through may require effort. This energy lasts until New Year’s Day.
December 13: Mercury in Sagittarius sextiles Pluto in Aquarius. If you need to do any research, this is the day to do it. When asking questions, let your intentional pauses linger and let the information unfold. Psychology, sales, and pitching ideas will likely be successful today.
December 14/Hanukkah Begins: Mars in Sagittarius squares Neptune in Pisces. FOMO or overextension can become themes of the day, especially with both planets at late degrees. Impulse spending and distraction come easily. Avoid over-stacking your schedule and watch for seductive side-quests that nab your attention.
December 15: Mars ingresses into Capricorn. The planet of action moves into the sign of his exaltation for a 5-week stay. In Capricorn, Mars wants to make sure that his efforts are going to create impact and legacy. Renew goals, assess progress, and honor your ambition. List achievements and build from strength. This is productive, grounded momentum.
December 16: Sun in Sagittarius squares Saturn in Pisces + Mercury clears his shadow. Your confidence can waver when your ego is on the line. The planet of responsibility and authority is making sure your bases are covered. Challenging authority can be hard psychologically with the Moon in Scorpio as well. Fatigue may surface, so rest to restore stability. This is a good day to simplify and go back to the basics.
December 19: New Moon in Sagittarius. This lunation is ruled by Jupiter in Cancer and is closely squaring Saturn in Pisces. Aim for new heights, but prepare for the challenges. The wise traveler knows difficulty may arise but begins the journey anyway with faith, skill, and resources. It’s a great day to dream big with travel plans, start a new study program, or research your family lineage from far-off lands. This New Moon asks you to commit to what expands you and trust your ability to navigate the unknown.
December 20: Sun in Sagittarius squares Neptune in Pisces + Venus in Sagittarius squares Saturn in Pisces + Mercury squares the Nodes. Make sure you check your assumptions today before speaking. You may find that your judgement is off or your brand of humor isn’t everyone’s flavor. Rethink your communication style and match it to the audience.
December 21/Winter Solstice: Sun ingresses into Capricorn. Here in the Northern Hemisphere, daylight is scarce on Winter Solstice. It is a time of reflection and celebration as we tend our inner hearths. During the next month, it’s a time to connect your joy to your ambition. Ruled by Saturn, this energy wants to be effective at its core. There is a sense of accomplishment when you fulfill your duties and level up your sense of responsibility. Over the next month, review what you’ve mastered and set the bar a little higher for the upcoming year.
December 22/Hanukkah Ends: Moon conjunct Pluto in Aquarius. Emotional rituals feel a bit more intense today, connecting the past and the present. As the candles burn, their steady glow reminds us that even in intensity, there is room for renewal and connection.
December 23: Venus in Sagittarius squares Neptune in Pisces. Dreams and ideals may need recalibration. What you want versus what is possible requires negotiation. Adjust the vision, not the heart.
December 24/Christmas Eve: Venus ingresses into Capricorn. The planet of relationships moves into cardinal earth. This is a mature Venus who wants to feel valued for all she is worth. Stability is one of the core values of a Capricorn Venus. Over the next 3 weeks, follow-through is key. Relationships benefit from reliability and commitment. If you were wanting to propose this holiday season, capture this energy and do it tonight.
December 25/Christmas: Moon in Pisces sextiles Mars in Capricorn. Excitement may bubble up this morning as imagination takes the lead. Family traditions can carry extra emotional weight, inspiring connection or reflection. Watch the way feelings guide your actions and use this energy to bring warmth, care, and thoughtful attention to those around you.
December 30: Mercury in Sagittarius squares Saturn in Pisces. Watch the inner critic today. This aspect can sharpen awareness or freeze progress. The Moon meets Uranus later, offering release through instinct or fresh insight. Break the loop and move forward.
December 31/New Year’s Eve: Mercury squares Neptune. Everyone needs some escape now and again. This is a great day to break up routine and do something completely different. Movie marathons, skiing adventures, polar plunges all fit the bill. Neptune has a way of clouding linear thinking, so the best thing to do is lean into an experience where you can turn off the logic.
