Two charts can both show Jupiter sextile Fortuna and feel nothing alike. Four variables decide which version you get.
Sign sets the delivery style. Jupiter in Taurus sextile Fortuna in Cancer is slow, solid, and material — a raise, a repair, a resource that lasts. Jupiter in Sagittarius sextile Fortuna in Aquarius moves fast and social: a referral through a group, an invitation that snowballs. Same angle, different speed and texture. Ask how Jupiter behaves in its sign, then expect the opportunity to arrive in that manner.
House sets the address. Jupiter in the sixth sextile Fortuna in the eighth points to better terms at work that improve your shared finances. Jupiter in the fourth sextile Fortuna in the sixth points to domestic stability that frees you to work better. The houses tell you which room of your life to open the window in. Without a verified birth time you cannot place houses at all, so this is the first thing to fix.
Orb sets the intensity and the deadline. The worked example — planets at 15° and 77°, separated by 62°, leaving a 2° orb — describes a tight aspect. Tight orbs deliver sharp, short windows you can almost diarise. Loose orbs deliver a long, vague stretch where the door stays unlatched and nothing presses you to walk through. Neither is better. They demand different behaviour.
Chart condition settles whether Jupiter can act, and how. Jupiter in its own sign, or trine the Sun, delivers freely. Jupiter squared by Saturn puts a price on the benefit — you get the opportunity, but you carry the workload. Jupiter conjunct the Sun or Ascendant amplifies the whole thing. Now the disagreement this section owes you a verdict on. Jupiter retrograde turns the expansion inward: the opening arrives as a rethink, a private offer, a second attempt at something abandoned, and the delivery is real but slower. Contrast that with Jupiter square Fortuna — the same two points pushed into a 90° confrontation, where the benefit arrives with friction and a demand you would rather avoid. The square shows what Jupiter looks like under pressure. The sextile, even retrograde, keeps the channel open.
Style comes from the sextile: soft, accessible, undramatic. Content comes from Jupiter: expansive, generous, business-minded. When the sign, house and orb cooperate, the quiet style and the generous content meet — a modest door opening onto a genuinely useful room.
One practical move. Look up your Fortuna sign and degree, then measure the angle to Jupiter yourself. If the orb is under 3°, put the action in the diary and take it. If it is between 3° and 6°, widen the window and let a slower opportunity find you. Past 6°, it is background flavour, not a scheduling tool. The calculator handles the arithmetic; the chart condition tells you what to expect when you act.