Open data · CC BY 4.0
The numbers behind AstroHot, computed in our own code rather than copied from other sites — 10,970 rows across 5 datasets, each with its method, how it was checked and a CSV you can download and reuse with a credit.
Every retrograde of Mercury through Pluto, with both stations to the minute and the shadow dates.
Mercury was retrograde on 19.2% of all days from 1900 to 2050 — 476 separate retrogrades.
The exact moment the Sun enters each zodiac sign, every year — the cusp dates that fixed charts round off.
Between 1900 and 2050 the Sun entered Aries on March 19 in 2, March 20 in 89, March 21 in 60 years (UTC).
Every new moon, first quarter, full moon and last quarter, with the sign and degree of the Moon and eclipse flags.
56 of the 151 years have 13 full moons instead of 12 (UTC dates).
Each lunar new year with its animal, element and polarity — and how many early-year birthdays still belong to the previous animal.
The lunar new year fell in February in 70 of the 110 years and in January in the other 40.
How often each of the 22 arcana lands in each of the nine key positions across all 36,525 birth dates of a century.
6 of the 22 arcana never appear in the centre of the matrix for any date from 1930 to 2029: 1, 2, 15, 17, 19, 21.
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One email to start, then occasional notes when something is worth reading — no daily sends.
Most astrology sites repeat each other: the same rounded sign dates, the same claims about how common an aspect or a dream is, rarely with a source. We compute these figures from astronomical formulas and full enumerations, and publishing the tables lets anyone check them — or build on them.
Every dataset is licensed under Creative Commons Attribution 4.0. Use it in articles, apps, research or teaching, commercially or not; credit AstroHot and link to the dataset’s page. Each page gives a ready-made citation and the date of the build.
The stated accuracy and the checks behind it are on each dataset’s page and, in full, on the methodology page. If a row looks wrong, tell us which one and why — confirmed corrections go into the next build.