The sidereal zodiac, your lunar mansion and the count of thirty-six gunas: the Indian tradition reads your chart by other markers, and it dates what it sees.
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Your complete sidereal chart: your Lagna, your birth nakshatra, your yogas and the dasha season you are crossing. All it takes is a date, a time and a place.
Get my Vedic chartJyotish counts degrees from the actual constellations, where Western astrology starts from the seasons. The gap between them, the ayanamsa, is now close to twenty-four degrees: most people therefore change sun sign when moving from one tradition to the other. Two different frames of reference, not a contradiction.
Where the West opens with the Sun, the Indian tradition opens with the Moon and the stellar mansion it occupies. Twenty-seven nakshatras, each with its lord and its temperament: that is the first word of your Vedic portrait.
The Vimshottari dashas divide life into large planetary periods, dated, following a fixed order from your birth. That is the mark of Jyotish: it places things in time rather than merely describing them.