Why a Transit Can Hit One, Three or Five Times

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"Why is my transit happening three times?" is one of the most common questions about transits. The short answer is that it does not always: a moving planet can be exact on a fixed natal degree once, three times or, for some planets, five times. Which of those you get depends on the planet and on where its backward loops happen to fall against your degree. This page measures how often each pattern occurs, for seven moving bodies over one hundred years, with one fixed rule.

Everything here is about a moving planet against a fixed natal degree: one point in your birth chart that stays put while the transiting planet passes it. It is not about natal retrogrades, and it is not an interpretation of any particular transit.

What the measurement found:

• One, three or five, never two or four. Every complete event in the study had one, three or five exact hits. An even count would leave the planet on the wrong side of the point, so an even run is only ever an unfinished one.
• The slower the planet, the more often the triple hit. A Mars transit was a single hit 96.0% of the time; Jupiter 70.3%, Saturn 46.8%, Chiron 30.9% and Uranus 7.8%. Neptune and Pluto had no single-hit events at all in this window and grid.
• Five hits only where loops overlap. Five-hit events turned up for Chiron (5.7%), Neptune (25.2%) and Pluto (25.4%), and for no other mover here.
• A triple hit is a span of months, not a day. From first to final hit, the median three-hit event lasted 156 days for Mars, 232 for Jupiter, 263 for Saturn and roughly 280 to 305 days for Chiron, Uranus, Neptune and Pluto. A five-hit event lasted about 19 to 20 months.

Educational guide: Astrologist.com does not offer a transit calculator, transit calendar or automated transit report, and the free birth chart covers the natal chart only. Every count and date on this page comes from a one-off offline calculation made for this article with the planetary routines behind the free chart. Nothing here is worked out for your own chart. Dates after October 2026 are model projections.

What this page adds

Transit timing and how transits work describe in general terms that some transits come back. Dozens of transit pages on this site date the passes for one example chart each. None of them answers the cross-planet question: for any degree you pick, how likely is one hit, three or five, and how long does the run last? That is the single job of this page.

How long a planet stays close to the point, and what a station near it does to that, is a different measurement with different numbers. It has its own page: stationary transits.

How it was measured

The rules were fixed in a scope agreement before any count was made.

• Movers and source. Mars, Jupiter, Saturn, Uranus and Neptune from the free chart's planetary routine (VSOP87B via the astronomia library, apparent Tropical longitude of date); Pluto from its own routine (Meeus chapter 37); Chiron from the chart's daily Chiron table, which covers 1920 to 2060, with straight-line interpolation between days. Time handling as in the chart.
• One window for all. 1 January 1950 00:00 UT up to, but not including, 1 January 2050. Nothing outside it was computed, so a result for this window is not a statement about all time.
• Targets. 360 fixed degrees around the zodiac, at 0°30', 1°30', and so on up to 29°30' Pisces, followed through every lap each planet made. These are geometric test points, not birth charts, and every mover gets the same set.
• One continuous track. Each planet was sampled every 3 hours (Mars, Jupiter) or 6 hours (the others) and joined into one continuous longitude, so passing 0° Aries needs no special handling.
• Hits and turns. A hit is a crossing of the target, forward (F) or backward (R), refined to under a minute within the model. Turning points (stations) were located precisely enough to group the hits, and are shown to the day. Where a turn sat between two samples, the track was rescanned locally so that a pair of hits could not hide between samples. None did.
• One event. An event is the connected run of crossings of one target with exactly one turn between each pair: F, F R F or F R F R F, with a retrograde turn before each backward hit and a direct turn before each forward one. It counts as complete only when an earlier retrograde turn inside the window stayed short of the target and a later direct turn inside the window stayed beyond it. Runs cut off by either end of the window are counted separately as open. A turn that reached the target without crossing it would be a touch, listed separately and never counted as a hit. There were no touches.
• Spans. First hit to final hit, in days. Medians with the 10th to 90th percentile range; the shortest and longest are marked as extremes.

The counts, mover by mover

The number of events falls from Mars to Pluto simply because a faster planet passes each test degree more often in a hundred years. The percentages are therefore shares of each planet's own events over the same window and degrees. They are not probabilities for a particular person, and the rows are not weighted to match each other.

Extremes, for completeness: three-hit spans ran from 108 to 170 days for Mars, 205 to 243 for Jupiter, 234 to 273 for Saturn, 218 to 307 for Chiron, 257 to 297 for Uranus, 301 to 308 for Neptune and 288 to 317 for Pluto. Five-hit spans ran from 555 to 593 days (Chiron), 580 to 594 (Neptune) and 560 to 623 (Pluto).

Open events, excluded from the table: Mars 19 at the start of the window and 342 at the end, Jupiter 30 and 43, Saturn 19 and 7, Chiron 6 and 16, Uranus 8 and 9, Neptune 2 and 5, Pluto 4 and 2. Mars has so many at the end because its last direct turn inside the window came in July 2048; any degree it passed after that has no later turn inside the window to show that the event was over. Those are "not closed inside this window", not single hits.

Why the pattern changes from planet to planet

Each planet turns retrograde once per cycle and slides back over a stretch of the zodiac before turning direct again. Two numbers decide what happens at a fixed degree: how far back each loop reaches, and how far the planet gets in net terms from one direct turn to the next.

A degree that lies inside a backward arc is crossed forward, backward and forward again: three hits. A degree in the gap between two loops is crossed once. So the share of three-hit events is roughly the backward arc divided by the net progress. For Jupiter that is 9.9 out of 33.2, about 30%, against 29.7% measured; for Saturn 6.8 out of 12.5, about 54%, against 53.2%; for Uranus about 91%, against 92.2%. Mars covers more than a full lap between turns, so only about one degree in 23 lies in a loop.

When a backward arc is longer than the net progress, consecutive loops overlap and there are no gaps at all. That is the case for Neptune and Pluto in every cycle of this window, which is why neither had a single-hit event here. A degree inside the overlap of two loops is crossed five times. For Neptune, an overlap of about 0.6° in 2.2° of progress predicts roughly a quarter of degrees with five hits, close to the 25.2% found.

Chiron is the mixed case. Its yearly progress ranges from about 3.5° in the slow signs to almost 18° in the fast ones, so in some stretches its loops overlap (five hits possible) and in others they leave gaps (single hits possible). Uranus sits just on the other side of the line: its loops almost meet, and in this window the closest pair missed overlapping by about 0.04°, so it had single hits but no five-hit events. That is a finding for 1950 to 2050, not a rule for every century.

Does the choice of test degrees matter?

A second set of 360 targets on the whole degrees (0°00', 1°00' and so on) was run with the same rules, as agreed in advance, to see whether the half-degree grid flattered the results.

For six movers the shares moved by less than two percentage points, and the median spans were the same to within a few days. Pluto's split between three and five hits moved by about six points. With fewer than 200 Pluto events, a few overlap zones that happen to catch a whole degree rather than a half degree shift the count noticeably, so the honest Pluto figure is "roughly a quarter to a third of events had five hits", not a precise percentage. The single-hit result for Neptune and Pluto (none) was the same on both grids.

One chart as an illustration

The statistics above are the evidence. To show what they look like for a person, here is one fictional birth already used on Uranus square Uranus, chosen before any result was computed: 12 August 1970, 14:20 British time, Bristol (13:20 UT; Britain kept clocks one hour ahead of GMT all year from 1968 to 1971). Its natal Sun is at 19°24'54" Leo in the chart's raw calculation, stored as 139.41° and displayed as 19°24' Leo. The target is that natal Sun degree, and only events that begin after the birth moment and fall inside the window are listed.

The open Mars event is a forward hit on 15 August 2049 with no direct turn left inside the window to close it. Neptune and Pluto do not reach late Leo before 2050; that is "none in this window", not "never". The mix matches the grid: mostly single hits for Mars, a minority of triple hits for Jupiter, and the slow movers more often in triple runs.

Saturn's triple hit, as one example of the F R F shape:

First to final hit took 257 days, close to the Saturn median of 263. The Uranus event of 2043 to 2044 (a projection) has the same shape over 289 days: hits on 6 September 2043, 25 February 2044 and 21 June 2044, with the retrograde turn 2°45' beyond the point on 27 November 2043 and the direct turn 1°24' before it on 24 April 2044.

Saturn's single hit of 19 July 2036 (also a projection) is worth a second look: its retrograde turn on 30 November 2035 stopped about 10' short of the point. It counts as one hit, but Saturn spends a long time close to the degree. That difference between the number of hits and the time spent nearby is the subject of the stationary transits page.

What the count does and does not tell you

The number of hits is geometry: where your degree sits relative to the planet's loops. It does not grade a transit. Three hits are not a stronger transit than one, the middle hit is not a crisis point, and the third hit is not a resolution. Some astrologers like to treat a run of hits as one longer period for reflection rather than three separate dates, and that can be a useful habit, but it is a reading choice, not a measured effect. Nothing here predicts events, health, relationships or money.

The bodies not in the table

• Sun: never retrograde, so it is exact on any natal degree once a year; see the solar return date.
• Mercury and Venus: their retrograde loops can also give triple hits, but they were not measured here; their sign and house passes are on Mercury and Venus transits through the houses.
• Mean Node: the node the chart uses moves steadily backward with no turning points in the production model, so it has no loop structure to count and no row here; see the nodal return.

Precision, kept in separate boxes

• Solver tolerance. Hits were refined to under a minute within each model. That describes the arithmetic, not the sky.
• The models. VSOP87B for Mars to Neptune, Meeus chapter 37 for Pluto (its routine is limited to 1885 to 2099), and the daily Chiron table for Chiron, whose turning points are only resolved to the day because the table itself is daily.
• Repository checks. The project tests these routines against the Swiss Ephemeris at daily noon from late 1919 to early 2061 with a 0.05° position allowance and separate station-timing gates; Chiron is tested over its table in the same way. Those are allowances for the whole range, not error bars on these counts.
• What the Swiss Ephemeris showed here. Used only as a check, and never as a source for any count: 123 turning points came within 3' of a test degree, and Swiss had every one of them on the same side of the degree as the chart's routine, so no classification would change, and for those turns the Swiss dates differed by under half a day (the largest gap for Chiron). For the Bristol chart, Swiss put the natal Sun 5.5" from the chart's value, and all 71 hits fell on the same UT date in Swiss.

Checking your own degree

1. Take the natal degree you care about from the free birth chart, as a Tropical longitude from 0° Aries.
2. In a Tropical ephemeris, find the retrograde and direct turns of the moving planet around the time it reaches that degree.
3. If your degree lies inside the stretch the planet slides back over, between the longitude of a retrograde turn and that of the direct turn after it, expect three hits; if it lies inside two overlapping stretches, five; otherwise one.
4. A turn within a few arc-minutes of your degree is where sources can disagree on the count. Give dates to the day, and note the source.

The fuller workflow is in how to read transits without a transit tool. Ask the Astrologist can talk through your natal chart and dates you bring from an ephemeris; it does not calculate transit dates.

Related articles

• Stationary Transits (time spent near the point, and what a station changes)
• Astrology Transit Timing
• How Transits Work
• How to Read Transits Without a Transit Tool
• Retrograde Planets and the Sun
• Uranus Square Uranus
• Nodal Return