Sun in Sidereal Libra: October 17, 2026 – November 16, 2026 (2026)

The Sun is in sidereal Libra from October 17, 2026 to November 16, 2026 in 2026, calculated with the Lahiri ayanamsa. This window spans the final days of tropical Libra season and the first three weeks of tropical Scorpio — so many people labeled tropical Scorpio by Western horoscope columns are actually carrying a sidereal Libra Sun.

Why these dates differ from tropical astrology

Tropical astrology fixes Libra to the autumnal equinox — September 22. Sidereal astrology anchors it to the actual Libra constellation's position in the sky. The two systems coincided around 285 CE; since then, Earth's axial precession (~50.3 arcseconds per year) has shifted the equinox roughly 24° west of the Libra star pattern. The Lahiri ayanamsa, codified as India's official astronomical standard in 1955 and now the basis for Vedic chart calculations worldwide, quantifies this drift at approximately 24.21° as of 2026. Subtracting that value from the tropical Sun longitude gives the Sun's position relative to the actual Libra star band. A sidereal Libra Sun means the Sun physically transits the Libra constellation — opposite Aries, the sign of its exaltation, where the Sun's debilitation at 10° Libra forces the identity to negotiate rather than simply assert.

Why sidereal differs from tropical →

How dates shift year over year

The Lahiri ayanamsa grows by roughly 50.3 arcseconds each year, nudging the Libra ingress roughly 20 minutes later each decade. The entry date stays near October 17 in 2026, October 17 in 2036, October 17 in 2046 — only the UTC hour shifts. The seven-year table below shows exact Swiss Ephemeris entry and exit times for 2023–2029, computed using SEFLG_MOSEPH and Lahiri ayanamsa mode — the same engine Estrevia runs for every natal chart. Anyone born near the October 16–18 boundary between sidereal Virgo and Libra should verify their birth year's specific ingress time to confirm which sign the Sun occupied.

See also

• Sun in Libra — personality and traits
• Why sidereal differs from tropical
• Calculate your full birth chart

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