What is the Ascendant (Lagna)? The starting point of the birth chart
The Ascendant (ASC, rising sign) is the degree of the zodiac rising on the eastern horizon at the moment and place of birth; Jyotish calls it the Lagna. It is the origin of the chart, and the houses are counted from it.

The point that orients the chart
The Ascendant, Descendant, MC and IC are the four angles that orient the chart. The Ascendant starts the first house, so when it moves every house boundary moves with it.
Why it depends on birth time
The rising degree moves on average about one degree every four minutes, one sign about every two hours, so the Ascendant requires a birth time and place; it cannot be set from the date alone.
How each system reads it
Western astrology reads the rising sign as how you meet the world and begin things, together with the chart ruler. Jyotish reads the Lagna and its lord as the foundation of the whole chart; with the sidereal zodiac, the sign is often the same as or one sign before the Western Ascendant.
How GenesisCore handles it
GenesisCore calculates the Western Ascendant and the Jyotish Lagna separately from your birth time and place. Without a birth time it limits time-dependent items such as houses and divisional charts.
FAQ
- What do I need to find my Ascendant?
- A birth time and place; the rising degree moves one sign about every two hours.
- Are the Lagna and the Ascendant the same?
- Both are the eastern horizon point, but the Lagna uses the sidereal zodiac, so its sign is often the same or one sign earlier.
GenesisCore
Read your own chart through both systems.
Try one system free. Standard (four PDFs) and Premium (six PDFs) are one-time purchases that include both Western astrology and Jyotish.
Launch prices until Nov 15, 2026, 23:59 JST: Standard 2,980 JPY → 2,235 JPY / Premium 5,980 JPY → 4,485 JPY
Related guides
- Western astrology vs. Indian astrology (Jyotish): the key differencesWhy do Western astrology and Indian astrology (Jyotish) give different results f…
- How to read a birth chart, and why your birth time mattersA birth chart is built from your date, time and place of birth. Learn how the As…
- What an AI astrology analysis shows: strengths, work and timing through two systemsWhat can GenesisCore's AI astrology analysis tell you? How it calculates Western…
- How to explore career direction with astrologyWhere to look in a birth chart for career direction: the Western 10th house and …
- Finding your strengths in a birth chart: a self-reflection guideHow to read strengths from a birth chart: Sun, Moon and Ascendant, element and m…
- What is Dasha? Reading life periods in Indian astrologyDasha divides life into planetary periods in Indian astrology. Learn how the 120…
- What is the Navamsa (D9)? How the ninth-division chart is built and readThe Navamsa (D9) divides each sign into nine parts of 3°20′. Learn how the start…
- What is a nakshatra? The 27 lunar mansions of Indian astrologyNakshatras divide the zodiac into 27 lunar mansions of 13°20′. See the list with…
- Sun sign vs. Moon sign: how to find them and how each system reads themYour Sun sign comes from your birth date; your Moon sign changes about every two…
- Astrology houses: the meaning of the 12 houses and house systemsThe houses divide a birth chart into twelve areas of life such as work, relation…
- Astrology transits: reading timing from current planetary positionsTransits overlay current planetary positions on the birth chart to read timing. …
- Synastry: reading compatibility by comparing two birth chartsSynastry compares two birth charts to read a relationship. Learn which planets m…
- The Midheaven (MC) and your calling: reading your public role in the chartThe Midheaven (MC) is the highest point of the birth chart and a key to career a…
- Yogas in Vedic astrology: key combinations and how to read themA yoga in Jyotish is a planetary combination that meets defined conditions. Lear…
- The D10 (Dasamsa) chart: reading career and public lifeThe D10 (Dasamsa) divides each sign into ten parts and is used in Jyotish to rea…