{"id":"vidhyamitra:city-day:mathura:1981-10-10:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/mathura/1981-10-10","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-10-10","date_display":"October 10, 1981 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":1981,"month":10,"day":10,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444887.770833,"kali_year":5083,"ahargana":1856422.2708,"sun":{"sidereal_longitude":172.3585,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":307.3358,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":12,"name":"Dvādaśī","paksha":"Śukla","full_name":"Śukla Dvādaśī","elongation_degrees":134.9772,"elapsed_within_tithi_degrees":2.9772},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1,"moon_longitude":307.3358,"elapsed_within_degrees":0.6691},"yoga":{"number":9,"name":"Śūla","sum_longitude":119.6943},"karana":{"half_tithi_index":22,"name":"Bava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"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":1981,"month":10,"day":10,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444887.770833,"ahargana":1856422.2708,"kali_year":5083,"ayanamsa_lahiri":23.5984,"grahas":{"sun":{"sidereal_longitude":173.05586500000004,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":false},"moon":{"sidereal_longitude":306.65216499999997,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":false,"latitude":-2.2156},"mars":{"sidereal_longitude":120.120765,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":189.96206499999994,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":true},"jupiter":{"sidereal_longitude":176.60956499999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":217.870765,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":169.40236499999992,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":97.8144,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":277.8144,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"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":1981,"month":10,"day":10,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444887.770833,"kali_year":5083,"ahargana":1856422.2708,"sun":{"sidereal_longitude":172.3585,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":307.3358,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":12,"name":"Dvādaśī","paksha":"Śukla","full_name":"Śukla Dvādaśī","elongation_degrees":134.9772,"elapsed_within_tithi_degrees":2.9772},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1,"moon_longitude":307.3358,"elapsed_within_degrees":0.6691},"yoga":{"number":9,"name":"Śūla","sum_longitude":119.6943},"karana":{"half_tithi_index":22,"name":"Bava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.216,"elongation":134.977},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.216,"opposition_distance":45.023}},"eclipse_window_40days":[]},"city":{"slug":"mathura","name":"Mathurā","lat":27.4924,"lon":77.6737,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"tier2":{"city":{"slug":"mathura","name":"Mathurā","lat":27.4924,"lon":77.6737,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"sunriseLocal":"06:15","sunsetLocal":"17:56","solarNoonLocal":"12:06","dayLengthHours":11.66977992271994,"dayLengthDisplay":"11 Hours 40 Mins 11 Secs","nightLengthDisplay":"12 Hours 19 Mins 49 Secs","moonriseLocal":"15:21","moonsetLocal":"02:39","rahuKala":{"name":"Rāhu Kāla","start":"09:11","end":"10:38","startHours":9.175250918120522,"endHours":10.633973408460513,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:33","end":"15:01","startHours":13.551418389140498,"endHours":15.010140879480492,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"06:15","end":"07:43","startHours":6.257805937440536,"endHours":7.716528427780529,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:59","end":"09:22","startHours":8.98075458607519,"endHours":9.369747250165853,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:45","end":"07:03","startHours":6.744046767553867,"endHours":7.055240898826399,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:42","end":"12:29","startHours":11.703703234709842,"endHours":12.481688562891172,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:42","end":"05:29","startHours":4.701835281077877,"endHours":5.479820609259207,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:17","end":"06:15","startHours":5.285324277213874,"endHours":6.257805937440536,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:02","end":"14:49","startHours":14.037659219253829,"endHours":14.815644547435157,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:44","end":"18:08","startHours":17.727585860160477,"endHours":18.127585860160476,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:56","end":"18:25","startHours":17.927585860160477,"endHours":18.413826690273808,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:41","end":"19:26","startHours":17.677585860160477,"endHours":19.427585860160477,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:42","end":"00:29","startHours":23.70370323470984,"endHours":24.481688562891172,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"06:15","end":"07:43","startHours":6.257805937440536,"endHours":7.716528427780529,"quality":"inauspicious"},{"name":"Śubha","start":"07:43","end":"09:11","startHours":7.716528427780529,"endHours":9.175250918120522,"quality":"auspicious"},{"name":"Roga","start":"09:11","end":"10:38","startHours":9.175250918120522,"endHours":10.633973408460513,"quality":"inauspicious"},{"name":"Udveg","start":"10:38","end":"12:06","startHours":10.633973408460513,"endHours":12.092695898800507,"quality":"inauspicious"},{"name":"Chala","start":"12:06","end":"13:33","startHours":12.092695898800507,"endHours":13.551418389140498,"quality":"neutral"},{"name":"Labha","start":"13:33","end":"15:01","startHours":13.551418389140498,"endHours":15.010140879480492,"quality":"auspicious"},{"name":"Amṛta","start":"15:01","end":"16:28","startHours":15.010140879480492,"endHours":16.468863369820482,"quality":"auspicious"},{"name":"Kāla","start":"16:28","end":"17:56","startHours":16.468863369820482,"endHours":17.927585860160477,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"17:56","end":"19:28","startHours":17.927585860160477,"endHours":19.468863369820482,"quality":"auspicious"},{"name":"Amṛta","start":"19:28","end":"21:01","startHours":19.468863369820482,"endHours":21.010140879480492,"quality":"auspicious"},{"name":"Kāla","start":"21:01","end":"22:33","startHours":21.010140879480492,"endHours":22.5514183891405,"quality":"inauspicious"},{"name":"Śubha","start":"22:33","end":"00:06","startHours":22.5514183891405,"endHours":24.092695898800507,"quality":"auspicious"},{"name":"Roga","start":"00:06","end":"01:38","startHours":24.092695898800507,"endHours":25.633973408460513,"quality":"inauspicious"},{"name":"Udveg","start":"01:38","end":"03:11","startHours":25.633973408460513,"endHours":27.175250918120522,"quality":"inauspicious"},{"name":"Chala","start":"03:11","end":"04:43","startHours":27.175250918120522,"endHours":28.71652842778053,"quality":"neutral"},{"name":"Labha","start":"04:43","end":"06:15","startHours":28.71652842778053,"endHours":30.257805937440537,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:15","end":"07:15","startHours":6.257805937440536,"endHours":7.257805937440536,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"07:15","end":"08:15","startHours":7.257805937440536,"endHours":8.257805937440537,"planetary_lord":"Moon"},{"name":"Hora 3","start":"08:15","end":"09:15","startHours":8.257805937440537,"endHours":9.257805937440537,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"09:15","end":"10:15","startHours":9.257805937440537,"endHours":10.257805937440537,"planetary_lord":"Venus"},{"name":"Hora 5","start":"10:15","end":"11:15","startHours":10.257805937440537,"endHours":11.257805937440537,"planetary_lord":"Sun"},{"name":"Hora 6","start":"11:15","end":"12:15","startHours":11.257805937440537,"endHours":12.257805937440537,"planetary_lord":"Mars"},{"name":"Hora 7","start":"12:15","end":"13:15","startHours":12.257805937440537,"endHours":13.257805937440537,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"13:15","end":"14:15","startHours":13.257805937440537,"endHours":14.257805937440537,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"14:15","end":"15:15","startHours":14.257805937440537,"endHours":15.257805937440537,"planetary_lord":"Moon"},{"name":"Hora 10","start":"15:15","end":"16:15","startHours":15.257805937440537,"endHours":16.257805937440537,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"16:15","end":"17:15","startHours":16.257805937440537,"endHours":17.257805937440537,"planetary_lord":"Venus"},{"name":"Hora 12","start":"17:15","end":"18:15","startHours":17.257805937440537,"endHours":18.257805937440537,"planetary_lord":"Sun"},{"name":"Hora 13","start":"18:15","end":"19:15","startHours":18.257805937440537,"endHours":19.257805937440537,"planetary_lord":"Mars"},{"name":"Hora 14","start":"19:15","end":"20:15","startHours":19.257805937440537,"endHours":20.257805937440537,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"20:15","end":"21:15","startHours":20.257805937440537,"endHours":21.257805937440537,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"21:15","end":"22:15","startHours":21.257805937440537,"endHours":22.257805937440537,"planetary_lord":"Moon"},{"name":"Hora 17","start":"22:15","end":"23:15","startHours":22.257805937440537,"endHours":23.257805937440537,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"23:15","end":"00:15","startHours":23.257805937440537,"endHours":24.257805937440537,"planetary_lord":"Venus"},{"name":"Hora 19","start":"00:15","end":"01:15","startHours":24.257805937440537,"endHours":25.257805937440537,"planetary_lord":"Sun"},{"name":"Hora 20","start":"01:15","end":"02:15","startHours":25.257805937440537,"endHours":26.257805937440537,"planetary_lord":"Mars"},{"name":"Hora 21","start":"02:15","end":"03:15","startHours":26.257805937440537,"endHours":27.257805937440537,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"03:15","end":"04:15","startHours":27.257805937440537,"endHours":28.257805937440537,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"04:15","end":"05:15","startHours":28.257805937440537,"endHours":29.257805937440537,"planetary_lord":"Moon"},{"name":"Hora 24","start":"05:15","end":"06:15","startHours":29.257805937440537,"endHours":30.257805937440537,"planetary_lord":"Mercury"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Punarvasu","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Uttara Phalgunī","Hasta","Citrā","Svātī","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Dhanu","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Makara","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"South","rahuVasa":"East","anandadiYoga":{"name":"Śubha","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":-6.545285598798683,"eotMinutes":13.743446071969673,"ayanamsa":23.5984}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Śukla Pakṣa","solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Śukla Dvādaśī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"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}],"todays_walk":{"walk":{"id":"shani-walk","name":"Śani Walk","name_sanskrit":"शनि यात्रा","type":"graha","description":"Tapas + endurance + BG 17.14-19.","step_count":7,"url":"/walk/shani-walk"},"reason":"Śanivāra (Saturday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":false,"location_specific":"mathura"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga October 10, 1981 CE · Mathurā · Vidhyamitra","description":"October 10, 1981 CE for Mathurā: Śukla Dvādaśī, sūryodaya 06:15, sūryāsta 17:56.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/mathura/1981-10-10","hreflang_alternates":{"en":"https://vidhyamitra.com/city/mathura/1981-10-10","sa":"https://sa.vidhyamitra.com/city/mathura/1981-10-10","hi":"https://hi.vidhyamitra.com/city/mathura/1981-10-10","x-default":"https://vidhyamitra.com/city/mathura/1981-10-10"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-14T16:27:46.622Z","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":"2026-05-14T16:27:46.622Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-14T16:27:46.622Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}