Did you know that via Cardology, you have a specific planet that rules each day of the week? Whatever day you were born on is your Mercury day. If you were born on a Sunday, that is the start of your week, and Sunday is your Mercury day, making Monday your Venus day, Wednesday would be your Jupiter day, and so on, with your week ending on your Neptune day.
As well, in Astrology, each day is ruled by a specific planet. 
Sunday is the Sun
Monday is the Moon.
Tuesday is Mars.
Wednesday is Mercury.
Thursday is Jupiter.
Friday is Venus.
Saturday is Saturn.
As part of working with astrological energies, we can plan or activate the planetary energy of the day in our daily routines to match and resonate with it.
But what if the ancient pairing of a day of the week to a planet doesn’t match your personal planetary day with your cards?
This post will clarify that and give you some ideas of how you can work with what might feel like contradicting or opposing daily energies! You don’t have to choose one over the other.
First off, if you don’t know what day you were born on, you can go here, https://www.timeanddate.com/date/weekday.html put in your birthday and it will tell you what day you were born on.
In Cardology, the day you were born is always your Mercury day. It is the day that starts your personal week. If you were born on a Monday, your personal week goes from Monday to Sunday. (Did you know that you have a weekly forecast as well as your personal daily card?)
Cardology doesn’t have a ‘Sun’ or ‘Moon’ day like Astrology and Astrology doesn’t have a Uranus or Neptune day like Cardology.
If using the planetary days of the week is something that interests you, how can you honor both your personal planet of the day and the astrological planet of the day?
First, a list of the Astrological planetary days and what the energetic focus is:
-Sunday is the Sun and focuses on your vitality – what energizes you? What makes you feel seen and focuses on YOU.
-Monday is the Moon day and focuses on you emotional needs and nurturing yourself. It’s a great day to check in on your emotional state and what is needed in that area.
-Tuesday is Mar’s day and focuses on action, activity, moving your body, creating and releasing heat and asks you about your courage and assertion.
-Wednesday is Mercury’s day and focuses on communicating, talking, learning and writing/sharing! Fast-paced and subject to sudden changes.
-Thursday is Jupiter’s day and focuses on optimism, going big, taking a risk and doing things that take you to higher levels – of thinking, of living and of your faith.
Jupiter also loves to travel!
-Friday is Venus’s day and focuses on beauty, art, love, relationships, feeling good about yourself and life!
-Saturday is Saturn’s day and focuses on responsibilities (chores?!?) structure, systems and even solitude.
Notice there isn’t a Uranus or Neptune day?
Yet, with your personal planetary day via Cardology, you have a Uranus and Neptune day – but not a Sun or Moon day.
Can you honor both your personal planetary days and the astrological days?
We’ve had numerous conversations on this topic in our Empowering You zoom gatherings.
For 2025, I’m finding myself wanting to be more in tune with nature, and my own personal rhythms and cycles, so I revisited this topic.
Below is a simple chart you can use to know the basic planetary energies for each of the planets, on the day they were assigned through astrology:
The energy of the Planet and ways to work with it is in the middle column. I kept it short, but you can be creative with how you use the energy.
The last column is where you can put in your personal planet via Cardology for each day of the week.
Now you can utilize both and create things, experiences, activities or space to honor the natural energy of your days. (A pdf of the chart to download)
| Astrology Days | Energy to Use | Your Cardology Day |
| Sunday – Sun |
Sunday is for you, to help you feel energized, give you vitality and to shine a light on you, your inner child, and to use sunshine!
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| Monday – Moon |
Focuses on your emotional needs and nurturing yourself. It’s a great day to check in on your emotional state, what you need to nurture yourself or connect with your intuition.
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| Tuesday – Mars |
Focuses on action, activity, moving your body, creating and releasing heat and asks you about your courage and assertion. Mars can be about sports, competition and even sex!
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| Wednesday – Mercury |
Focus is on communicating, talking, learning, reading, writing/sharing! Fast-paced and subject to sudden changes.
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| Thursday – Jupiter |
Focuses on optimism, going big, taking a risk and doing things that take you to higher levels – of thinking, of living and of your faith.
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| Friday – Venus |
Focuses on beauty, art, love, relationships, your material possessions (what you want to have) feeling good about yourself and life!
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| Saturday – Saturn |
Focuses on responsibilities (chores?!?) structure, systems, routines and even solitude.
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| Uranus (there is no astrological Uranus day, but you have a Personal Uranus day in Cardology) |
Uranus focuses on disruptions, getting out of status quo, shaking up your routine, being a part of a community, being authentically you, progressive and innovative and weird! |
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| Neptune (there is no astrological Neptune day, but you have a Personal Neptune day in Cardology) |
Neptune focuses on the spiritual world, dreams, imagination, escapism – to nourish yourself through Neptune, use entertainment that opens your imagination and your connection to the unseen world of Spirit. |
If the energies are contradictory, establish your rules of what you prefer NOT to do on your personal planetary day(s) that conflicts with the day.
You might not be able to tell your boss that on Mondays, you can only daydream and take care of your emotional needs (If Mondays are your Neptune day), but you can establish a routine of taking a bubble bath on Monday evenings or taking the time to write in your dream journal and taking note of what your psyche is telling you about your emotional needs.
We all have our day to day stuff that is part of our job, our family or schedules we can’t control, but we can still use the energy of the day and our personal planets energy to create something to honor that and our natural rhythm.
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