{"id":"vidhyamitra:city-day:ayodhya:2131-10-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/ayodhya/2131-10-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2131-10-18","date_display":"October 18, 2131 CE","panchanga":{"method":"Sūrya Siddhānta + Bhāskara-II iterative manda + Kerala-school (Mādhava-Nīlakaṇṭha) evection + variation + annual equation","engine_version":"2.0 (Kerala-school enhanced)","accuracy_note":"Sub-degree on Moon at any Kali-Yuga date (~2-5° residual max)","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":2131,"month":10,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2499681.770833,"kali_year":5233,"ahargana":1911216.2708,"sun":{"sidereal_longitude":177.4997,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":142.1653,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":324.6656,"elapsed_within_tithi_degrees":0.6656},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3,"moon_longitude":142.1653,"elapsed_within_degrees":8.832},"yoga":{"number":24,"name":"Śukla","sum_longitude":319.665},"karana":{"half_tithi_index":54,"name":"Gara"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"sky":{"method":"Sūrya-Siddhāntic Bhāskara-II 4-step iteration with atan2-based śīghra + varying peripheries + lunar latitude","engine_version":"3.0 (Pūrṇa — complete SS implementation)","tradition_sources":"Āryabhaṭīya 499 CE → SS Ch.1-5 Burgess 1860 → Siddhānta-Śiromaṇi Bhāskara II 1150 → Tantrasaṅgraha Nīlakaṇṭha 1501","input":{"year":2131,"month":10,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2499681.770833,"ahargana":1911216.2708,"kali_year":5233,"ayanamsa_lahiri":25.6941,"grahas":{"sun":{"sidereal_longitude":178.55203200000005,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":144.115232,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":false,"latitude":4.1599},"mars":{"sidereal_longitude":16.89233200000001,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":201.629232,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":63.548332000000016,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":202.00163199999997,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":198.66253200000006,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":74.5646,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":254.5646,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false}},"panchang":{"method":"Sūrya Siddhānta + Bhāskara-II iterative manda + Kerala-school (Mādhava-Nīlakaṇṭha) evection + variation + annual equation","engine_version":"2.0 (Kerala-school enhanced)","accuracy_note":"Sub-degree on Moon at any Kali-Yuga date (~2-5° residual max)","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":2131,"month":10,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2499681.770833,"kali_year":5233,"ahargana":1911216.2708,"sun":{"sidereal_longitude":177.4997,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":142.1653,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":324.6656,"elapsed_within_tithi_degrees":0.6656},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3,"moon_longitude":142.1653,"elapsed_within_degrees":8.832},"yoga":{"number":24,"name":"Śukla","sum_longitude":319.665},"karana":{"half_tithi_index":54,"name":"Gara"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.16,"elongation":35.334},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.16,"opposition_distance":144.666}},"eclipse_window_40days":[]},"city":{"slug":"ayodhya","name":"Ayodhyā","lat":26.799,"lon":82.204,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"tier2":{"city":{"slug":"ayodhya","name":"Ayodhyā","lat":26.799,"lon":82.204,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"sunriseLocal":"06:01","sunsetLocal":"17:30","solarNoonLocal":"11:46","dayLengthHours":11.48689317777724,"dayLengthDisplay":"11 Hours 29 Mins 13 Secs","nightLengthDisplay":"12 Hours 30 Mins 47 Secs","moonriseLocal":"03:17","moonsetLocal":"15:39","rahuKala":{"name":"Rāhu Kāla","start":"13:12","end":"14:38","startHours":13.199000677168513,"endHours":14.634862324390669,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"06:01","end":"07:27","startHours":6.019692441057739,"endHours":7.455554088279894,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:53","end":"10:20","startHours":8.891415735502049,"endHours":10.327277382724205,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:42","end":"09:05","startHours":8.699967515872428,"endHours":9.08286395513167,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:30","end":"06:48","startHours":6.49831299013179,"endHours":6.804630141539183,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:23","end":"12:09","startHours":11.380242590687118,"endHours":12.1460354692056,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:29","end":"05:15","startHours":4.4881066840207735,"endHours":5.253899562539257,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:04","end":"06:01","startHours":5.062451342909635,"endHours":6.019692441057739,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:41","end":"14:27","startHours":13.677621226242564,"endHours":14.443414104761047,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:18","end":"17:42","startHours":17.30658561883498,"endHours":17.70658561883498,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:30","end":"17:59","startHours":17.50658561883498,"endHours":17.98520616790903,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:15","end":"19:00","startHours":17.25658561883498,"endHours":19.00658561883498,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:23","end":"00:09","startHours":23.380242590687118,"endHours":24.1460354692056,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"06:01","end":"07:27","startHours":6.019692441057739,"endHours":7.455554088279894,"quality":"auspicious"},{"name":"Roga","start":"07:27","end":"08:53","startHours":7.455554088279894,"endHours":8.891415735502049,"quality":"inauspicious"},{"name":"Udveg","start":"08:53","end":"10:20","startHours":8.891415735502049,"endHours":10.327277382724205,"quality":"inauspicious"},{"name":"Chala","start":"10:20","end":"11:46","startHours":10.327277382724205,"endHours":11.763139029946359,"quality":"neutral"},{"name":"Labha","start":"11:46","end":"13:12","startHours":11.763139029946359,"endHours":13.199000677168513,"quality":"auspicious"},{"name":"Amṛta","start":"13:12","end":"14:38","startHours":13.199000677168513,"endHours":14.634862324390669,"quality":"auspicious"},{"name":"Kāla","start":"14:38","end":"16:04","startHours":14.634862324390669,"endHours":16.070723971612825,"quality":"inauspicious"},{"name":"Śubha","start":"16:04","end":"17:30","startHours":16.070723971612825,"endHours":17.50658561883498,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"17:30","end":"19:04","startHours":17.50658561883498,"endHours":19.070723971612825,"quality":"auspicious"},{"name":"Kāla","start":"19:04","end":"20:38","startHours":19.070723971612825,"endHours":20.634862324390667,"quality":"inauspicious"},{"name":"Śubha","start":"20:38","end":"22:12","startHours":20.634862324390667,"endHours":22.199000677168513,"quality":"auspicious"},{"name":"Roga","start":"22:12","end":"23:46","startHours":22.199000677168513,"endHours":23.76313902994636,"quality":"inauspicious"},{"name":"Udveg","start":"23:46","end":"01:20","startHours":23.76313902994636,"endHours":25.327277382724205,"quality":"inauspicious"},{"name":"Chala","start":"01:20","end":"02:53","startHours":25.327277382724205,"endHours":26.89141573550205,"quality":"neutral"},{"name":"Labha","start":"02:53","end":"04:27","startHours":26.89141573550205,"endHours":28.455554088279893,"quality":"auspicious"},{"name":"Amṛta","start":"04:27","end":"06:01","startHours":28.455554088279893,"endHours":30.01969244105774,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:01","end":"07:01","startHours":6.019692441057739,"endHours":7.019692441057739,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"07:01","end":"08:01","startHours":7.019692441057739,"endHours":8.019692441057739,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"08:01","end":"09:01","startHours":8.019692441057739,"endHours":9.019692441057739,"planetary_lord":"Moon"},{"name":"Hora 4","start":"09:01","end":"10:01","startHours":9.019692441057739,"endHours":10.019692441057739,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"10:01","end":"11:01","startHours":10.019692441057739,"endHours":11.019692441057739,"planetary_lord":"Venus"},{"name":"Hora 6","start":"11:01","end":"12:01","startHours":11.019692441057739,"endHours":12.019692441057739,"planetary_lord":"Sun"},{"name":"Hora 7","start":"12:01","end":"13:01","startHours":12.019692441057739,"endHours":13.019692441057739,"planetary_lord":"Mars"},{"name":"Hora 8","start":"13:01","end":"14:01","startHours":13.019692441057739,"endHours":14.019692441057739,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"14:01","end":"15:01","startHours":14.019692441057739,"endHours":15.019692441057739,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"15:01","end":"16:01","startHours":15.019692441057739,"endHours":16.01969244105774,"planetary_lord":"Moon"},{"name":"Hora 11","start":"16:01","end":"17:01","startHours":16.01969244105774,"endHours":17.01969244105774,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"17:01","end":"18:01","startHours":17.01969244105774,"endHours":18.01969244105774,"planetary_lord":"Venus"},{"name":"Hora 13","start":"18:01","end":"19:01","startHours":18.01969244105774,"endHours":19.01969244105774,"planetary_lord":"Sun"},{"name":"Hora 14","start":"19:01","end":"20:01","startHours":19.01969244105774,"endHours":20.01969244105774,"planetary_lord":"Mars"},{"name":"Hora 15","start":"20:01","end":"21:01","startHours":20.01969244105774,"endHours":21.01969244105774,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"21:01","end":"22:01","startHours":21.01969244105774,"endHours":22.01969244105774,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"22:01","end":"23:01","startHours":22.01969244105774,"endHours":23.01969244105774,"planetary_lord":"Moon"},{"name":"Hora 18","start":"23:01","end":"00:01","startHours":23.01969244105774,"endHours":24.01969244105774,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"00:01","end":"01:01","startHours":24.01969244105774,"endHours":25.01969244105774,"planetary_lord":"Venus"},{"name":"Hora 20","start":"01:01","end":"02:01","startHours":25.01969244105774,"endHours":26.01969244105774,"planetary_lord":"Sun"},{"name":"Hora 21","start":"02:01","end":"03:01","startHours":26.01969244105774,"endHours":27.01969244105774,"planetary_lord":"Mars"},{"name":"Hora 22","start":"03:01","end":"04:01","startHours":27.01969244105774,"endHours":28.01969244105774,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"04:01","end":"05:01","startHours":28.01969244105774,"endHours":29.01969244105774,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"05:01","end":"06:01","startHours":29.01969244105774,"endHours":30.01969244105774,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Uttara Phalgunī","Hasta","Citrā","Svātī","Viśākhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Mithuna","Siṃha","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Kanyā","Vṛścika","Dhanu","Mīna"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"West","rahuVasa":"North-West","anandadiYoga":{"name":"Sushira","quality":"Auspicious"},"drikRitu":"Śarad (Autumn) (Drik)","vedicRitu":"Varṣā (Monsoon)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-9.400335449315511,"eotMinutes":15.395658203218455,"ayanamsa":25.6941}},"calendars":{"vikram_samvat":2188,"vikram_samvatsara":"Krodhi","saka_samvat":2053,"saka_samvatsara":"Khara","bengali_samvat":1538,"malayalam_era":1307,"nanakshahi_year":662,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Kṛṣṇa Pakṣa","solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Kṛṣṇa Trayodaśī · Vikram 2188 Krodhi · Śaka 2053 Khara"},"festivals":[{"id":"kanya-sankranti","name":"Kanyā Saṅkrānti (Mahālaya begins)","name_sanskrit":"कन्या सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Virgo; Mahālaya / Pitṛ-Pakṣa solar marker.","vrata":false,"detection":{"sun_rashi":"Kanyā"},"precedence":4},{"id":"pradosha-vrata","name":"Pradoṣa Vrata","name_sanskrit":"प्रदोष व्रत","tradition":"Shaiva","associated_deity":"Śiva","significance":"Twilight worship of Śiva on Trayodaśī.","vrata":true,"detection":{"any_of":[{"tithi_number":13},{"tithi_number":28}]},"precedence":7}],"todays_walk":{"walk":{"id":"guru-walk","name":"Bṛhaspati Walk","name_sanskrit":"गुरु यात्रा","type":"graha","description":"Wisdom transmission + BG 4.34.","step_count":8,"url":"/walk/guru-walk"},"reason":"Guruvāra (Thursday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":false,"location_specific":"ayodhya"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga October 18, 2131 CE · Ayodhyā · Vidhyamitra","description":"October 18, 2131 CE for Ayodhyā: Kṛṣṇa Trayodaśī, sūryodaya 06:01, sūryāsta 17:30.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/ayodhya/2131-10-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/ayodhya/2131-10-18","sa":"https://sa.vidhyamitra.com/city/ayodhya/2131-10-18","hi":"https://hi.vidhyamitra.com/city/ayodhya/2131-10-18","x-default":"https://vidhyamitra.com/city/ayodhya/2131-10-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-17T08:58:26.668Z","verification":{"type":"multi-marker","confidence":"canonical"}},{"pillar":"Vidhyamitra-Tier2","pillar_version":"0.1.0","method":"Spherical astronomy + Lahiri ayanamsa + standard solar declination + EoT correction","retrieved_at":"2026-05-17T08:58:26.668Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-17T08:58:26.668Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}