Sun Transit Hub

What is Surya Gochar?

Surya Gochar (सूर्य गोचर) is the Sun's transit through the 12 zodiac signs and 27 Nakshatras. The Sun completes one full circuit in exactly one solar year (~365.25 days), spending about 30 days in each sign and ~13.5 days in each nakshatra. In Vedic astrology the Sun signifies soul, self, vitality, father, authority, and government, and its sign entries — called Sankrantis — are the twelve major seasonal turnings of the Vedic year, marked with rituals across the subcontinent.

Sankranti — the twelve solar entries

Every Sun sign entry is a Sankranti, and each has its own name and cultural weight:

• Makar Sankranti (Sun into Capricorn, ~14 January) — celebrated as Pongal, Uttarayan, Lohri. Marks the Sun's northward turn.
• Mesha Sankranti (Sun into Aries, ~14 April) — Vedic solar new year (Vishuva / Baisakhi).
• Karka Sankranti (Sun into Cancer, ~16 July) — Dakshinayana begins. The Sun's southward turn.
• Tula Sankranti (Sun into Libra, ~17 October) — Vishuva equinox in the sidereal frame.
• Plus eight more — Kumbha, Meena, Vrishabha, Mithuna, Simha, Kanya, Vrishchika, Dhanu.

Each Sankranti is a fixed astronomical event, and traditional practice includes bathing at sacred rivers, giving to charity, and pausing new ventures during the auspicious window at the ingress, called Punya Kaala.

Punya Kaala is not the same length for every Sankranti, for two reasons. First, per Dharam Sindhu, each sign is allotted its own span in ghatis (1 ghati = 24 minutes) — 10 ghatis on each side of the moment for Mesha and Tula, 16 ghatis on one side only for most signs, 30 ghatis before Karka, and 40 ghatis after Makara. Second, Punya Kaala is a daytime observance: an ingress falling at night, or close to sunrise or sunset, is shifted into the nearest daylight period and capped there, so the observed window is usually shorter than the allotted span. Because that cap follows your local sunrise and sunset, the same Sankranti runs for different lengths in different places — across a year the twelve windows can range from a few minutes to more than seven hours.

For the exact Punya Kaal and Maha Punya Kaal timings of every Sankranti, see the Sankranti Calendar.

Uttarayana and Dakshinayana

The Sun's sidereal path through Capricorn → Gemini is called Uttarayana (northward course, ~14 January – ~16 July), traditionally considered the more auspicious half of the year for weddings, thread ceremonies, temple consecrations, and any Vedic Sanskaras. Its opposite half, Cancer → Sagittarius, is Dakshinayana (southward course, ~16 July – ~14 January), better suited for ancestor rites, spiritual retreat, and inward practice. Note that Vedic Uttarayana begins at Makar Sankranti (sidereal) — not at the tropical winter solstice (Dec 21), a distinction that generates most of the online confusion around when Uttarayana “really” starts.

Surya Rashi Peyarchi — the year timeline

Ravi Peyarchi is the Tamil / South Indian term for the Sun's sign change — literally “Sun transit.” Because the Sun never retrogrades, a calendar year contains exactly 12 Ravi Peyarchi events, one per month. The Year Timeline shows the complete Peyarchi / Sankranti calendar for any year: every sign visit as a card, with nested peak-dignity sub-events and any active dignity for the whole visit (Exalted in Aries, Debilitated in Libra, Own in Leo). Nakshatra-level visits have their own calendar, the Surya Nakshatra Peyarchi timeline.

Sun exaltation, moolatrikona, own sign, and debilitation

• Exalted across all of Aries (Mesha) — peak exaltation at 10° Aries. The peak is the exact degree, so it lasts about 25 seconds and falls around 24 April each year in the sidereal frame.
• Moolatrikona in Leo (Simha) 0°00'00"–20°00'00" — the Sun's strongest stretch outside exaltation, roughly 17 August to 6 September. Ranked below exaltation but above a plain own-sign placement.
• Own Sign in Leo (Simha) 20°00'01"–29°59'59" — the Sun holds Leo for the whole ~17 August to ~17 September stretch, but only past 20° (from ~6 September) does it read as own sign rather than moolatrikona. Considered highly favorable for authority, leadership, and government-related matters.
• Debilitated across all of Libra (Tula) — peak debilitation at 10° Libra. The peak is the exact degree, so it lasts about 25 seconds and falls around 27 October each year.

How the calculations are done

Every Sun position and every Sankranti moment is computed via Swiss Ephemeris with Lahiri Ayanamsha — the same DE431 planetary dataset published by NASA JPL and used across professional-grade Vedic tools. Sankranti times are resolved to the exact ephemeris instant via binary search on the sidereal longitude, matching to the second the times printed in Vedic almanacs. The Sun never retrogrades and its speed varies only slightly (between about 0.95° and 1.02° per day depending on Earth's position in its elliptical orbit), so the year-to-year Sankranti dates drift by at most ~24 hours across a decade.

Sidereal vs Tropical Sun — the biggest confusion in astrology

Nowhere is the sidereal / tropical split more visible than with the Sun. Western astrology uses the tropical zodiac (defined by the seasons, so tropical Aries always starts at the March equinox, ~21 March). Vedic astrology uses the sidereal zodiac (fixed against the stars). The current gap is about 24° due to precession, which means the sidereal Sun enters Aries around 14 April — almost a month after the tropical entry. This is why someone born on 5 April with a “Western Aries Sun” often has a Vedic Pisces Sun. This tracker uses Lahiri Ayanamsha exclusively; the Sankranti dates shown here match what appears in every Indian panchang publication and government solar calendar.

Does the Sun's position depend on my location?

The Sun's sidereal longitude at any UTC instant is location-invariant. What varies is your local wall-clock time — the Karka Sankranti moment “01:12 AM IST 17 July” reads “12:42 PM PST the previous day 16 July” for someone in Los Angeles. Same astronomical instant, different label. The tracker auto-detects your timezone so every Sankranti and sign-entry time displays in your local rhythm. The Date Lookup mode uses your local sunrise as the anchor, following Vedic day-boundary convention.

What this tracker gives you

Five connected tools, all powered by Swiss Ephemeris DE431 with Lahiri Ayanamsha:

• Live Tracker — the Sun's current sidereal longitude, sign (Rashi), Nakshatra, Pada, sign lord, nakshatra lord, deity, and dignity. Also shows the exact time the Sun enters and exits its current sign, in your local timezone.
• Date Lookup — the Sun's complete readout at local sunrise for any past or future date. Because the Sun only changes sign ~12 times a year and nakshatra ~27 times, most days show no within-day transition; the days that do are the Sankranti and nakshatra-entry days.
• Find Dates — reverse lookup. Pick a target sign or nakshatra and a date range (up to 2 years), get the exact window during which the Sun occupies it. Useful for finding a specific upcoming Sankranti or the next Uttara Phalguni entry.
• Year Timeline — the flagship view. Every Sun sign visit for a chosen year as a card, with nested nakshatra sub-events. Use the arrows to view any past or future year.
• Nakshatra Peyarchi — the same year view at Nakshatra resolution rather than sign: every Sun Nakshatra visit with pada-level entry and exit times, exactly 27 visits a year, since the Sun never retrogrades. Sun-owned Nakshatras (Krittika, Uttara Phalguni and Uttara Ashadha) are highlighted.

Explore the rest of Nakshatrica

One tool won't answer everything. Nakshatrica pairs each landing page with a full set of free, Swiss-Ephemeris-precise Vedic tools — pick whichever you need next.