Cycle analysis.
Maths, not magic.
Ephemeris timelines, Bradley siderograph, Gann Square of Nine, FFT and Hurst cycle scanning, historical analog matching β all in one toolkit. You supply the data. You interpret the output.
No signals. No recommendations. No advice. Just the numbers.
Why Crohamhurst?
Crohamhurst Observatory sits at 317 metres in the D'Aguilar Range, inland from Brisbane. From 1887 to 1974 it recorded 87 years of continuous rainfall data β some of the longest unbroken records in Queensland. Clement Wragge built it. Inigo Jones used those records to develop his long-range seasonal forecasts, which he published from 1923 until his death in 1954.
Jones believed in long cycles. He correlated rainfall patterns with planetary cycles stretching back centuries, found 35-year and 11-year rhythms, and made forecasts that unsettled mainstream meteorology. He was right enough, often enough, that Queensland farmers still talk about his method.
The toolkit is named after the observatory. The approach is computational, not mystical. The cycles are there in the data. Whether they cause anything is your question to answer, not ours.
What's being built
Ephemeris timelines
Major and minor aspects across any date range. Sun through Pluto, helio or geo. Export to CSV.
Bradley siderograph
Classic 1948 Bradley formula plus Hannula variant. Overlay against your own price series.
Gann Square of Nine
Square of Nine and 144 with custom pivot price and date. Pure Decimal geometry, no rounding.
Cycle scanner
FFT, Hurst exponent, Bartels significance test on your uploaded series. Ranked cycle table with p-values.
Historical analogs
Match your target date against a century of SE Queensland rainfall or your own series. Ranked by angular similarity.
Bulk API
Pro tier β every compute endpoint available as a REST API with Bearer token auth and OpenAPI docs.
Planned pricing (AUD)
Get early access
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