Morning Brief: Friday Last Quarter in Gemini Map Tests $86,366 BTC, $89.41 WTI, SPCX, and STRC Yield into S&P Global Composite PMI Final

Gann describes the tape as a condensed record of competing hopes, fears, manipulation, public opinion, and business judgment. That makes it useful because it is public and sequential, not because it reveals every motive behind a print. The analyst's job is to read what actually traded, then test whether the next bars keep accepting that information. A practical worksheet should therefore separate observation from story. Record price, volume, spread, and follow-through first. Put rumor, sponsor guesses, and attribution in a separate column. If price advances on heavy activity and then fails to hold the breakout, the failed acceptance matters even when the story sounds persuasive. If a dull headline produces persistent higher lows, the tape is still giving evidence. This lesson pairs well with breadth or tick data. A simple pressure ratio, such as uptick volume minus downtick volume divided by total volume, summarizes an auction condition without claiming to know every participant. The tape can be a reliable barometer only after interpretation rules are stated before the move.

Try it

Synthetic tape: 3,200 shares trade on upticks, 2,400 on downticks, and 400 unchanged. Compute (uptick volume - downtick volume) / total volume.

Limits

The ratio is synthetic and ignores trade size distribution, hidden liquidity, venues, and closing-auction effects. It classifies observed pressure; it does not identify motives or guarantee follow-through.

Source

W. D. Gann, Truth of the Stock Tape (1923), Book I, Chapter I, What is Tape Reading?, printed p. 2. Primary source: Internet Archive scan of the original printed book; OCR passage checked directly during the reserve refill. Modern pressure-ratio worksheet is editorial.

Today

Latest completed SPY regular-session one-minute bars show downtick volume ahead of uptick volume by 1,960,468 shares, for a negative 4.71% net tape-pressure ratio. This classifies observed pressure only, not participant motives. NYSEARCA:SPY one-minute bars, Latest session 2026-10-01T20:00:00Z: (uptick_volume - downtick_volume) / total_volume = -0.047141140714958944 net tape-pressure ratio (inputs: bar_count=391, downtick_volume=20704605, total_volume=41587199, unchanged_volume=2138457, uptick_volume=18744137). Data source 1

An eclipse recurrence needs more than another new Moon. Phase must return, the Moon must be near a node, and its distance should be similar if the next eclipse is to resemble the first. NASA's Saros explanation brings those three clocks together: 223 synodic months, 242 draconic months, and 239 anomalistic months are almost the same duration. Multiply using NASA's mean month lengths and you get 6,585.321347 days for phase, 6,585.357482 for the node cycle, and 6,585.537450 for the distance cycle. The node clock misses the phase clock by about 52 minutes and the distance clock misses it by about 5.19 hours. The recurrence works because these totals are close, not because they are identical. Now look at the fraction of a day, 0.321347. In a simple picture of 360 degrees of rotation per day, that is about 115.7 degrees of extra rotation, which is why NASA describes successive solar-eclipse paths as shifting roughly 120 degrees westward. A later eclipse can have similar celestial geometry over a very different longitude, and only after three Saros intervals does the family return to about the same region. About matters. The clocks are not exactly commensurate and a recurrence is not a replay.

Try it

Make three rows: phase, node, distance. Enter NASA's mean month length and the recurrence count for each, multiply, and subtract the phase total from the other two. Convert the residuals to minutes or hours. Then multiply the fractional part of the phase total by 360.

Limits

Mean-month arithmetic is explanatory, not a substitute for a dated eclipse catalog or path map. A Saros family provides no established repeating financial outcome. This deepens an existing reserve topic rather than opening a new one.

Source

NASA Eclipse Web Site, Eclipses and the Saros, Opening lunar-month table and the paragraph after the recurrence table. Physical astronomy from a NASA reference page.

Today

NASA lists the next solar eclipse as the 2027-02-06 annular eclipse in Saros 131; adding one mean Saros lands on 2045-02-16, matching the next Saros 131 catalog date. The Saros returns the series, not the same local sky path. NASA solar eclipse catalog, Saros 131, As of 2026-10-02T11:05:00Z: 2027-02-06 16:00 UTC + 6585.32 days = 2045-02-16 23:40:48 UTC = 6585.32 days; resulting date 2045-02-16 UTC (inputs: calculated_next_member_day=16, calculated_next_member_month=2, calculated_next_member_year=2045, greatest_eclipse_hour_utc=16, next_eclipse_day=6, next_eclipse_month=2, next_eclipse_year=2027, saros_days=6585.32). Data source 1 Data source 2