Dashamsha (D10) chart explained
The dashamsha (D10) is the divisional chart that divides each sign into ten parts of 3 degrees each. It is used mainly for career and public action.
What it is
Each sign's ten dashamsha parts follow a fixed order that depends on the sign's element. Odd signs start the count at their own sign, and even signs at the ninth sign from their own.
How it is worked out or read
The Kundli computes the dashamsha with this rule and draws it from the chart selector.
Where it appears on this site
The dashamsha is not in the birth chart tool yet. See divisional charts for the list of vargas.
What the dashamsha is for
The dashamsha, or D10, divides each sign into ten parts of 3 degrees each. It is traditionally used for questions of career, public action and standing, and it is often read alongside the tenth house of the main chart. A reader who wants a finer view of work and its results may consult it, while keeping the main chart as the primary reference.
Like the other divisional charts, the dashamsha reveals detail that the main chart does not show, and its readings depend on the exact degree of the grahas.
The mapping in outline
Each sign's ten dashamsha parts follow a fixed order depending on the sign's element. In odd signs the count starts at the sign itself, and in even signs at the ninth sign from it. A graha at a given degree of a sign therefore falls in a dashamsha sign found by moving forward a set number of places from the starting sign.
Once the sign and degree of a graha are known, the reader can apply this rule by hand and read the resulting sign in the same way as a sign in the main chart.
Using the dashamsha with care
Because the dashamsha is a finer division, a small error in the birth time can move a graha across a boundary. Readers should check the degree carefully, and should not give the dashamsha more certainty than the main chart. The reading should describe the tendencies of career and standing, not outcomes.
The dashamsha on this site
The site's Kundli computes the dashamsha with the rule above and draws it from the chart selector. A reader can check any graha by applying the rule to the sign and degree shown in the planet table.
Because each dashamsha division is only three degrees wide, the chart is sensitive to the birth time: the Lagna moves through a division in about twelve minutes. A reader should therefore treat the dashamsha Lagna with caution unless the birth time is known closely, and should read the dashamsha together with the tenth house of the birth chart rather than on its own.
Dashamsha and the tenth house
The dashamsha is often compared with the tenth house of the main chart, since both concern work and public standing. A reader who consults the dashamsha should look at both, and note whether the main chart's career themes are confirmed or qualified by the finer division. Agreement between them is read as a clearer picture of vocation.