Returns a JSON list of 22 pre-configured cities with name, latitude, longitude, timezone, and country. Call this first to discover valid city names.

Returns full Panchangam JSON for a date and city: Pancha Anga (Tithi, Nakshatra, Yoga, Karana), sky events (Sunrise, Sunset, Moonrise, Moonset), auspicious windows (Brahma Muhurta, Abhijit, Amrita Kalam), inauspicious windows (Rahu Kalam, Gulika, Yamagandam, Varjyam, Durmuhurtham), Choghadiya, and special day flags. New in 1.9.0: ghati_clock (sunrise-anchored ghati/vighati clock), nakshatra_pada (Moon's pada 1-4), vishaghati windows, bhadra_mukha/bhadra_puchha (Vishti split), sankramana_avoidance, in_panchaka_nakshatra, nakshatra_mukha (Adho/Urdhva/Tiryak), anandadi_yoga, is_khar_maasa/khar_maasa_name, is_pitru_paksha, simha_stha_guru/simha_stha_shukra (Drik only), guru_maudhya/shukra_maudhya (Drik only), disha_shoola_direction, panchaka_rahita. Args: date=YYYY-MM-DD, city=city name (or pass latitude+longitude for a custom location; timezone is derived if omitted), system=drik|surya_siddhanta|vakya (default: drik), ayanamsa=lahiri|raman|krishnamurti|true_chitrapaksha (default: lahiri; SS and Vakya accept the param for API symmetry but always use their own mean-motion model).

Returns auspicious and inauspicious time windows for a date and city as JSON. Lighter than get_panchangam — use for quick 'is this a good time?' queries. Includes all 1.9.0 timing fields: vishaghati, bhadra_mukha/bhadra_puchha, sankramana_avoidance, ghati_clock, in_panchaka_nakshatra, nakshatra_mukha, anandadi_yoga, is_khar_maasa, is_pitru_paksha, simha_stha_guru/shukra, guru_maudhya/shukra_maudhya, disha_shoola_direction, panchaka_rahita. Args: date=YYYY-MM-DD, city=city name (or pass latitude+longitude; timezone is derived if omitted), system=drik|surya_siddhanta|vakya (default: drik).

Returns a JSON list of special days in a given month: Ekadashi (fasting days), Amavasya (new moon), Pournami (full moon), Pradosham, Sankranti, and Eclipses. Args: year=e.g. 2026, month=1-12, city=city name (or pass latitude+longitude; timezone is derived if omitted), system=drik|surya_siddhanta|vakya (default: drik).

Returns 24 planetary hours (horas) for a date and city as JSON. The 12 daytime horas start at sunrise and the 12 nighttime horas start at sunset. The first hora is ruled by the weekday lord. Args: date=YYYY-MM-DD, city=city name (or pass latitude+longitude; timezone is derived if omitted), system=drik|surya_siddhanta|vakya (default: drik).

Returns Ascendant (Lagna) sign boundaries for a date and city as JSON, tracking the rising sign on the eastern horizon from sunrise to next sunrise. Args: date=YYYY-MM-DD, city=city name (or pass latitude+longitude; timezone is derived if omitted), system=drik|surya_siddhanta|vakya (default: drik).

Returns a compact Panchangam summary for each day in a date range (max 31 days). Each day includes: Tithi, Nakshatra, Yoga, Sunrise/Sunset, all auspicious and inauspicious windows, eclipse (if any), special yogas, and special day flags. New in 1.9.0: each day also carries all timing-computation fields — ghati_clock, nakshatra_pada, vishaghati, bhadra_mukha/bhadra_puchha, sankramana_avoidance, in_panchaka_nakshatra, nakshatra_mukha, anandadi_yoga, is_khar_maasa/khar_maasa_name, is_pitru_paksha, simha_stha_guru/shukra, guru_maudhya/shukra_maudhya, disha_shoola_direction, panchaka_rahita. Useful for planning muhurtas over a week or comparing multiple days. Args: start_date=YYYY-MM-DD, end_date=YYYY-MM-DD, city=city name, system=drik|surya_siddhanta|vakya (default: drik), ayanamsa=lahiri|raman|krishnamurti|true_chitrapaksha (default: lahiri).

Returns Asta (heliacal setting / combustion entry) and Udaya (heliacal rising / re-emergence) periods for the five classical planets — Mercury, Venus, Mars, Jupiter, Saturn — over a date range for a given city. Asta marks when a planet becomes invisible due to proximity to the Sun; Udaya marks when it re-emerges. This matches the Drik Panchang Asta/Udaya calendar (sky-visibility criterion), not the fixed BPHS elongation Maudhya thresholds used in per-day combustion flags. Accuracy: within 1–2 days of Drik Panchang for most planets; Mars ±2 days. Max date range: 366 days. Args: start_date=YYYY-MM-DD, end_date=YYYY-MM-DD, city=city name (or pass latitude+longitude; timezone derived if omitted), planets=optional subset e.g. ['Saturn', 'Jupiter'] (default: all five).

Returns Graha Yuddha (planetary war) periods in a date range. A planetary war occurs when two of the five tara grahas — Mercury, Venus, Mars, Jupiter, Saturn — come within 1° of each other in ecliptic longitude. The planet with the higher ecliptic latitude (more northerly) at the closest approach is the victor; the vanquished loses astrological strength for the duration. The Sun, Moon, Rahu, and Ketu are exempt by classical convention. Each war entry includes: the two planets, winner, loser, start/exact/end times in UTC, and minimum separation in arc-minutes. Max date range: 366 days. Args: start_date=YYYY-MM-DD, end_date=YYYY-MM-DD, planets=optional subset e.g. ['Venus', 'Jupiter'] (default: all five, yielding all 10 pair combinations).

Returns all rashi (sign) ingress events for the classical planets over a date range. A rashi ingress is when a planet crosses from one zodiac sign into the next — the foundational event for gochara (transit) period boundaries. Sidereal coordinates (ayanamsa-configurable). Includes retrograde ingresses (a planet re-entering a sign it recently left). Each entry has: planet, rashi entered, enters (UTC), exits (next ingress, UTC — may fall outside the range). Planets with no sign change in the range (e.g. Saturn in Meena all of 2026) do not appear. Supported planets: Sun, Mercury, Venus, Mars, Jupiter, Saturn, Rahu, Ketu. Moon is excluded (too frequent — a sign every ~2.25 days). Max range: 366 days. Args: start_date=YYYY-MM-DD, end_date=YYYY-MM-DD, planets=optional subset (default: all eight), ayanamsa=lahiri|raman|krishnamurti|true_chitrapaksha (default: lahiri).

Returns all solar and lunar eclipses in a date range with per-city visibility and Sutak timing. Each eclipse entry includes: kind (Solar/Lunar), subtype (Total/Annular/Partial/Penumbral), visible (whether it is observable from the given city), start/end times in local time, and sutak (ritual impurity window — 12 hours before Solar, 9 hours before Lunar) for visible eclipses only. Max range: 730 days (two years). Args: start_date=YYYY-MM-DD, end_date=YYYY-MM-DD, city=city name (or pass latitude+longitude; timezone derived if omitted).

Panchanga Shuddhi — five-limb purity assessment for any date. Returns a verdict (Sarva Shuddha / Chatushka Shuddha / Tri Shuddha / Dvi Shuddha / Eka Shuddha / Sarva Ashuddha) and a per-limb breakdown (Tithi, Vaara, Nakshatra, Yoga, Karana) with quality ('shuddha' | 'ashuddha' | 'mixed') and a one-line reason for each. Rules: Tithi — Rikta (4th/9th/14th) are ashuddha; Vaara — Mon/Wed/Thu/Fri are shuddha, Sun/Tue/Sat are ashuddha; Nakshatra — Laghu/Mridu/Dhruva/Chara are shuddha, Tikshna/Ugra are ashuddha, Krittika/Vishakha are mixed; Yoga — the 17 Nitya auspicious yogas are shuddha, Vyatipata/Vaidhriti are ashuddha, partial-dosha yogas (Vishkambha/Atiganda/Shoola/Ganda/Vyaghata/Parigha) are mixed; Karana — Vishti (Bhadra) and the four fixed karanas are ashuddha, all movable karanas are shuddha. Values are taken at sunrise. Args: date=YYYY-MM-DD, city=city name (or latitude+longitude), system=drik|surya_siddhanta|vakya (default: drik).

Find which upcoming days are auspicious for one or more people based on their janma (birth) nakshatras — Tarabalam, optionally combined with Chandrabalam. Returns per-day taras (Janma/Sampat/Vipat/Kshema/Pratyak/Sadhana/Naidhana/Mitra/Parama Mitra) for each person plus good_for_all_dates listing days auspicious for everyone. Pass janma_rasis (aligned with janma_nakshatras, null entries allowed) to also check Chandrabalam — each person then gets a chandra position/verdict (good | puja | bad) and good_for_all requires both checks to pass. Args: janma_nakshatras=1-4 birth stars (canonical spellings, e.g. 'Ashvini', 'Uttara Bhadrapada'), start_date=YYYY-MM-DD, days=1-60 (default 14), city=city name (or latitude+longitude), system=drik|surya_siddhanta|vakya, janma_rasis=optional birth rashis (e.g. 'Meena'), chandra_mode=how the Moon affects good_for_all: 'stars' (annotate only, matches classic tarabalam tables — default), 'puja_ok' (drop Moon-avoid days), 'strict' (Moon must be good).

Sidereal positions of all nine grahas — Surya, Chandra, Kuja, Budha, Guru, Shukra, Shani, Rahu, Ketu — at sunrise of the given date: longitude, rasi, nakshatra, pada, retrograde flag, and when each graha enters its next rasi (rasi_until + next_rasi; transit/gochara groundwork). Args: date=YYYY-MM-DD, city=city name (or latitude+longitude; timezone derived if omitted), ayanamsa=lahiri|raman|krishnamurti|true_chitrapaksha (default: lahiri).

Gochara (transit) verdicts for a janma rasi (natal Moon sign): each of the nine grahas with its house position counted from the janma rasi, a verdict (favourable | blocked by vedha | adverse) per the classical Brihat Samhita tables, plus named conditions — Sade Sati with phase, Ashtama Shani, Ardhastama Shani. Positions at sunrise of the date. Args: date=YYYY-MM-DD, janma_rasi=e.g. 'Mesha' (canonical rashi spellings), city=city name (or latitude+longitude), ayanamsa=lahiri|raman|krishnamurti|true_chitrapaksha (default: lahiri).

Daily Rasi Phalalu — a deterministic daily reading for a janma rasi, rendered entirely from computed facts: the Moon's chandrabalam house sets the day quality, each graha's gochara verdict (with vedha) becomes one traceable sentence, Sade Sati/Ashtama Shani are stated when running, and passing janma_nakshatra adds the day's tarabalam line. Not fiction: every line maps to a calculation. Args: date=YYYY-MM-DD, janma_rasi=e.g. 'Mesha', janma_nakshatra=optional birth star for the tara line, city=city name (or latitude+longitude), ayanamsa=lahiri|raman|krishnamurti|true_chitrapaksha (default: lahiri).

Find ranked auspicious time slots over the coming days. Slots are good choghadiya blocks (Amrit/Shubh/Labh/Char) with every inauspicious window subtracted (Rahu Kalam, Gulika, Yamagandam, Varjyam, Durmuhurtham), scored with Abhijit Muhurta / Amrita Kalam overlap and special-yoga bonuses. activity tunes the rules: travel additionally avoids Vishti karana, ceremony skips Visha/Dagdha days, purchase favours Labh, beginning favours Amrit. New in 1.9.0: Bhadra Mukha is a hard-avoid cut; Bhadra Puchha is a bonus for litigation; Simha-Stha Guru/Shukra, Guru/Shukra Maudhya (combustion), Khar-Maasa, Adhika Maasa, and Pitru Paksha are all skipped for samskara activities; Panchaka Rahita (Mrityu/Agni/Raja/Chora/Roga) is checked at both day-level (sunrise lagna) and slot-level; optional travel_direction parameter activates Disha Shoola filtering. New activities: litigation, cremation, construction_roof, wood_cutting, well_digging, coronation. Pass janma_nakshatras (1-4 birth stars) to keep only days whose tarabalam favours everyone. Optionally pass janma_rasis (aligned with janma_nakshatras, null entries allowed) to add Chandrabalam scoring — each person then gets the Moon's position from their rashi with a verdict (good / needs remedial puja / avoid), and chandra_mode selects how this affects the day filter: 'stars' (annotate only, default), 'puja_ok' (drop Moon-avoid days), 'strict' (Moon must be good). Optionally pass janma_lagnas (aligned, null entries allowed) to use strict Lagna Shuddhi for that person — kendra/trikona/Ashtama count from the natal ascendant; otherwise we fall back to counting from janma_rasis (Chandra-Rashi-as-lagna tradition). include_night=True adds night choghadiya slots (sunset to next sunrise) scored by the same panchangam factors but without Rahu Kalam / Gulika / Yamagandam / Abhijit, and with Brahma Muhurta (+2) and Nishita Kala (+2) as night bonuses. Args: start_date=YYYY-MM-DD, days=1-14, activity=any|travel|purchase|ceremony|beginning|litigation|cremation|construction_roof|wood_cutting|well_digging|coronation, city=city name (or latitude+longitude), system=drik|surya_siddhanta|vakya, janma_rasis=optional birth rashis (e.g. ['Meena', 'Simha']), janma_lagnas=optional birth lagnas (e.g. ['Vrishabha', None]), chandra_mode=stars|puja_ok|strict, ayanamsa=lahiri|raman|krishnamurti|true_chitrapaksha (default: lahiri), travel_direction=optional compass direction (N/S/E/W/NE/NW/SE/SW) to activate Disha Shoola filtering for travel activity, include_night=false|true.