One of Bradley F. Cowan's methodologies for identifying cycles in financial markets and projecting future turning points employs synodic lunar periods (the time it takes the Moon to align with the Sun relative to the Earth).
followed by one synodic lunar cycle projection (red arrow) extending to Wednesday, April 29 09:04.
While the synodic lunar month averages 29.53058886 days (≈ 29 days, 12 hours, 44 minutes, and 2.88 seconds), orbital eccentricity causes individual periods to vary from 29.26 to 29.80 days, a difference of up to 12 hours and 57 minutes.
Cowan's technique
anchors the start date and time of the synodic lunar cycle to a confirmed major market top or
bottom, e.g. to the major low on Monday, March 30, 2026 at 20:20 EDT. Subsequent cycle projections are then generated at exact
360-degree intervals forward from that anchor to April 29 (Wed) 09:04, May 28 (Thu) 21:48, June 27 (Sat) 10:32, July 26 (Sun) 23:16, etc.
Anchored to the S&P's major low on Monday, March 30 at 20:20 EDT, the 1st, 2nd, 4th, and 8th harmonics
of one synodic lunar cycle generate the blue summation or composite projection line to April 29 (Wed) 09:04.
8.4-week cycle (2-lunar month or 59-day cycle) generate the blue composite projection line for April and May.
Anchored to the S&P's major low on Monday, March 30 at 20:20 EDT, the 1st, 2nd, 4th, and 8th harmonics of the
17-week cycle (= Intermediate Term Delta cycle = 4-lunar month or 118-day cycle = one third of the lunar year)
generate the blue composite projection line to July 26 (Sun) 23:16. The June 18 high should
be lower than the May 8 high, and the July 26 low should be lower than the March 30 low.
Bradley Cowan's synodic lunar cycle projections in stocks.
In his books "Four Dimensional Stock Market Structures and Cycles" (1993) and "Pentagonal Time Cycle Theory" (2009), Cowan further elaborates on this "anchored" lunar and planetary cycle projection methodology. However, unlike the highs and lows shown in the blue composite projection lines in the charts above, Cowan's methodology utilizes 45-degree synodic lunar cycle offsets (= 8th harmonic ≈ 3.6913 calendar days or 3 days, 16 hours, 35 minutes, and 28.3 seconds = April 03 (Fri) 12:55, April 07 (Tue) 05:31, April 10 (Fri) 22:06, etc.) to project potential turning points only rather than specific highs and lows, higher highs and higher lows, and lower highs and lower lows.
Sidereal lunar cycle projections.
In 2021, Mario Moretti of "4X Other Way" presented anchored projections of future turning points using the 27.321661-day sidereal lunar period (≈ 27 days, 7 hours, 43 minutes, and 11.5 seconds; the time it takes the Moon to orbit the Earth relative to the distant 'fixed' stellar background; to fixed stars such as Aldebaran, Altair, Deneb, Rigel, or Sirius). Now, should the lunar cycle be synodic or sidereal? Both cannot be simultaneously correct or exact—at best, only one of them works.
» Usually there will be an eclipse near the same degree of the zodiac once every 19 years [...] In this cycle the Sun makes a complete circuit of the sky and reaches the same Node at the same place on the ecliptic. This length of time is 6585.32 solar days, which is 48 years and 11.33 days. The shortest time required for the Sun to travel from and return to the same node is 346.6 solar days, an interval known as an Eclipse Year. [...] Nineteen of the eclipse years contain 6585.4 days, which is precisely 223 synodic months. This is when the Nodes themselves become important in the predictions on the stock market. «
Tom McClellan observes that the 2026 price structure closely mirrors 2025, with the tightest alignment achieved by shifting the data 343 days to synchronize even minor fluctuations. This offset closely approximates the above mentioned Eclipse Year (346.62 days)—the interval required for the Sun to return to the same lunar node (the intersection of the Moon's orbit with the ecliptic). Because this draconic cycle is shorter than the solar year, it governs eclipse seasons, which recur about every 173 days and drift earlier each calendar year. The cycle is driven by the westward precession of the Moon’s orbital nodes, completing a full rotation roughly every 18.6 years and thereby defining the 346.62-day periodicity. However, intermediate- and longer-term analogs are generally unstable and break down at some point. If Tom McClellan’s "Stock Market Matching the Year Ago" analog continues to hold, it implies a sustained bullish trend into the summer of 2026. This conflicts not only with intermediate-term cycles but with typical seasonal weakness from May to October—especially in a presidential cycle’s second year.
