Birth Chart Basics
If you were born while the Sun was above the horizon you have a day chart; below it, a night chart. The distinction is called sect, it is one of the oldest things in the tradition, and it changes...
Look at where the Sun sits in your chart. Houses 7 through 12 are above the horizon, so a Sun there means a day chart. Houses 1 through 6 are below, so a Sun there means a night chart. Roughly, if you were born between sunrise and sunset it is a day chart.
If the Sun is within a few degrees of the ascendant or descendant it is a borderline case, and practitioners differ on how to call it.
Each planet is assigned to one team. The day team is the Sun, Jupiter and Saturn; the night team is the Moon, Venus and Mars. Mercury switches depending on whether it rises before or after the Sun. A planet on the same team as your chart behaves better than one on the other.
The practical consequence is the useful bit: Saturn in a day chart is noticeably less harsh than Saturn in a night chart, and Mars in a night chart is noticeably less harsh than Mars in a day chart. That single distinction accounts for a large part of why two people with the same Saturn placement report different lives.
Sect is everywhere in Hellenistic astrology and almost entirely absent from twentieth-century practice. It came back in the 1990s and 2000s with the translation of the original Greek sources, and it is now one of the first things a traditionally trained astrologer checks.
If you have read that Saturn is relentless and found that yours is not, sect is the first place to look.
| Planet | Team | In a matching chart | In a mismatched chart |
|---|---|---|---|
| Sun | Day | Operates well | Harder to express |
| Jupiter | Day | The most helpful thing in the chart | Helpful, but less so |
| Saturn | Day | Strict but constructive | The harshest placement there is |
| Moon | Night | Operates well | Harder to express |
| Venus | Night | The most helpful thing in the chart | Helpful, but less so |
| Mars | Night | Sharp but useful | The most difficult placement |
| Mercury | Either | Depends whether it rises before the Sun |
Saturn in the 7th house in Capricorn, in a day chart: strict, demanding, and constructive. Partnerships are serious and slow and tend to last. The same placement in a night chart is the one the textbooks describe when they talk about Saturn as a malefic: the same seriousness, with much less of the constructive half.
Two people with identical Saturn placements and different sect will give you completely different accounts of what Saturn is like. That is the single most useful thing the distinction buys.
essential dignity, then how to read a birth chart, then the four angles.
Everything on this page is general by necessity. A reading built from your own date, time and place is the version that names your placements rather than describing the categories they fall into. If you do not know your birth time, this covers how to find it.
Day if the Sun was above the horizon at your birth, which means it sits in houses 7 to 12. Night if below, in houses 1 to 6.
It decides which planets are read as helpful. Saturn is much easier in a day chart and Mars much easier in a night chart.
Thoroughly traditional. It is everywhere in Hellenistic astrology and was largely forgotten for most of the twentieth century.
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