Confirm the promise
Before timing anything, establish that the chart PROMISES it. Run the threefold method (n35): the relevant house, its lord, and the karaka. Add any yoga (module 7). If all three witnesses deny the matter and nothing cancels the denial, the honest answer is that no period will deliver it — say so.
Before timing marriage, confirm the 7th, its lord, and Venus actually support it.
Find the carrying periods
List the SIGNIFICATORS of the matter: the house lord, the karaka, planets sitting in or aspecting the house, its dispositor, and any yoga participants. The event's window is a mahadasha or antardasha ruled by one of these — the planets that carry the promise are the planets that time its payment.
Marriage times to periods of the 7th lord, Venus, planets in the 7th, or the 7th's dispositor.
Both lords touching the matter
The strongest windows are where the mahadasha AND antardasha lords BOTH significate the event (n73's shared-significator rule). A 7th-lord mahadasha running the antardasha of Venus, with both strong, is a marriage window lit from two directions — far more reliable than a single significator alone.
Career peaks cluster where both period lords touch the 10th.
Worked case — step 1
Priya's marriage promise, audited
The 7th (Capricorn) holds an exalted Mars — her yogakaraka — standing in the partnership house itself. The 7th lord Saturn sits in the 10th, debilitated but doubly rescued, exchanging signs with Mars. The karaka Venus stands in Virgo — its fall — yet holds its own sign Taurus in the navamsha: modest surface, solid bedrock. Three witnesses speak; none denies. Marriage is promised, carrying Saturn's signature: gravity, duty, some delay.
Only after this audit does the calendar get consulted. No promise, no prediction — the order is absolute.
Worked case — step 2
The carrying windows, dated and ranked
Significators: Saturn (7th lord), Venus (karaka), Mars (occupant of the 7th). Now the walk. Mercury–Venus, 15.5–18.3: carries, but far too young — life stage vetoes it. Ketu–Venus, 29.5–30.6: a real early window. Venus's own chapter opens at 36.1, and Venus–Venus, 36.1–39.4, puts the karaka on BOTH calendar levels — the deepest convergence available. Venus–Saturn, 48.9–52.1, brings the 7th lord itself to the scene — a late, binding window if the earlier ones pass unused.
Stated like a professional: most likely 36–39, possible 29–31, late window 49–52 — age windows with reasons, never dates with certainty.
Significator plus strength
A period lord that significates the matter must ALSO be able to deliver it — strong, well-disposed, its yogas unbroken (n72, n74, n67). A strong significator's window is a confident prediction; a weak or afflicted one's is tentative, delayed, or partial. Timing without delivery-strength is a date with no event.
A debilitated 7th lord's period may promise marriage but stall it — confidence drops.
Cross-check the divisional chart
Route the matter to its varga (n54) and confirm the significators hold there too: marriage in the D9, career in the D10, children in the D7. A promise strong in both rashi and varga, timed by a period touching both, is the most reliable prediction the system offers.
Priya's D9 seals her case: Venus own-sign in Taurus there — the marriage promise has bedrock under its modest surface.
Pratyantardasha as the trigger
The mahadasha–antardasha pair sets the YEAR-scale window; the pratyantardasha (and, next lesson, transits) narrows to the month. A significator's pratyantar inside a significator's antardasha inside a significator's mahadasha is the tightest timing the dasha system alone provides.
The month of an event often carries a third significator at the pratyantar level.
The one idea to keep
Where a real promise meets a strong carrying period
Predict only at the intersection: a promise the chart genuinely holds, a period whose lords significate it, and the strength to deliver — confirmed in the varga, narrowed by the beat, stated as age windows. No promise, no prediction; no carrying period, no date.