Working with Synastry (1) – Transit Analogy

Someone asked me to write about the basics of synastry. One approach is to think of other person’s chart like a “semi-permanent” transit*.

Let’s say you make a double-ringed chart – your horoscope on the inner ring, and your partner’s chart on the outer ring. Now look at it like a transit chart: the planets on the outer ring affect, influence and transform the planets on the inner ring through aspects.

A key thought: the strength of the aspect increases with time and depth of interaction: if you live with someone for 5 years, that person’s energy is going to to into you a lot deeper than someone you’ve met 3 days ago. The energies of challenging aspects aren’t felt as acutely between casual acquaintances.

If you don’t like transiting Saturn squaring your Moon, but you are in a relationship with someone whose Saturn squares your Moon, you might want to consider how you feel during the time you spend together – because you may continue to feel the unease in connecting emotionally with that person, no matter what you may keep telling yourself. This may not be what you want or need.

Does this mean the relationship won’t work if you find challenging aspects between someone’s Saturn and your Moon? It depends: if you already have the Saturn-Moon aspect in your horoscope, there is a chance that you have already worked with the issue of emotional self sufficiency, and you won’t have to be “fed” by the other person emotionally – then it might work even when you have the Saturn-Moon interaspect (i.e. aspect formed by planets between two horoscopes).

A few things to consider:

  • Your planet’s contact with another person’s Saturn may suggest that you will not get what you need easily – but you’ll have to earn it. In the case of Moon mentioned above, the fulfillment of your reigning need (see Moon’s sign) may not be given easily by the other person. Saturn is hardest on the emotional planet (Moon, Venus, and perhaps Mars.)
  • Your planet’s contact with another person’s Neptune may suggest a romantic or inspirational effect that person will have on you. There is a potential for upliftment or deception.
  • Your planet’s contact with another person’s Uranus may suggest intensification and excitement created through the relationship interaction. The result could be highly charged emotions, for good or ill.
  • Your planet’s contact with another person’s Pluto may suggest empowerment, and potentially challenging transformations. You may have to be willing to look at yourself deeply and be honest in order to grow.

The point of transit is to trigger growth and change; relationship also has this effect – and synastry tells why/how the growths occur.

*meaning, the effect of the “transit” continues as long as the relationship is continued.

About Hiroki Niizato

Hiroki Niizato is a professional consulting astrologer in Florida, serving clients in US and abroad. He has been practicing astrology professionally since 2001. Hiroki is a highest honor graduate of the demanding Master’s Degree Certification Course in Astrology by Noel Tyl.

You can contact Hiroki via email at: or Phone: 727-470-4056 to ask a question or schedule a consultation.


  1. I was curious how do transits effect a synastry aspect. If I have a moon opposition with my partner and saturn comes along and squares both? Do transits effect that?

  2. I’m sorry moon opposition with partners sun.

  3. Dear Hiroki your website and hints are very useful to me! Anyway I’m not able to find…in the whole web…any information about the fact of having both lilith-s and chiron-s reciprocally linked in synastry (mine L to his C and his C to my L !) what does that could mean? Many many thanks in advance! :)

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