Not luck in the sense of money appearing or a problem vanishing. Fortuna in classical sources was tied to material conditions, well-being, and outward circumstances, and a sextile from the Descendant routes those circumstances through people. The luck is contact: the introduction, the referral, the friend who knows exactly who you need.
Not commitment either. The Descendant rules marriage and long-term partnership, but a sextile is a friendly, workable angle, not a binding one. Commitment comes from the whole chart — where Saturn sits, what Juno is doing, what the Seventh House actually contains — and from two people deciding to stay. This aspect shows that a relationship is useful and easy to maintain. It says nothing about whether it lasts.
Attraction is the question readers ask most, and the answer is mixed. The sextile is a Venus-flavored angle and often shows up in connections that begin warmly and practically rather than dramatically. You like each other. You help each other. It tends to grow from friendship, colleagues, or a mutual contact rather than a lightning strike. Deep, obsessive attraction belongs to harder contacts: squares, oppositions, Pluto, Mars. This one is more likely to start as 'we got along instantly' than 'I could not stop thinking about you.'
Here is the cleanest way to hold all three answers together. Luck, commitment, and attraction are three separate questions, and this single aspect answers only one of them, partially. It answers: will useful things come to me through other people? Yes, when you participate. It does not answer: will I be rich, will they marry me, will I fall for them. Those answers live in the rest of the chart.
What the aspect does reliably is create openings. If you want to know how much weight to give it in your own life, start by finding the Descendant and the Lot of Fortune in your chart, note how tight the contact is and which houses they occupy, and compare those readings against the real pattern of favors and introductions you have experienced so far. Your history with useful contacts is the best evidence you have.
From there, the next step is practical. Calculate your free birth chart first to locate the Descendant and Fortuna, then compare that chart against a partner's in the synastry chart calculator to see whose Fortuna is activating whose Descendant. Check the astrology calendar for the collective dates when the sextile forms, or use the transit chart calculator for a selected date to test whether the geometry touches your own chart — it expands a single moment into personal timing, not a full monthly forecast. When the window opens, act inside it. The aspect hands you the door; the walking is still yours.
The awkward part is always the input. Houses, angles, and the Descendant require a birth date, an exact birth time, and a birth location. A birth date alone cannot produce them — a noon chart built from a date without a time is a working approximation, and its houses, angles, and time-sensitive placements are not established facts. If you do not know your rising sign, the rising sign calculator needs your date, time, and place of birth to estimate it. If the Moon changed signs on your birth day, the moon sign calculator resolves which side of the shift you landed on.
Everything here is astrological interpretation, not a prediction of money, commitment, or another person's feelings. Use it as a reading of a pattern, and let the pattern in your own life be the judge.