{"id":"vidhyamitra:city-day:mathura:1981-01-08:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/mathura/1981-01-08","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-01-08","date_display":"January 8, 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":1,"day":8,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444612.770833,"kali_year":5082,"ahargana":1856147.2708,"sun":{"sidereal_longitude":263.9648,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":284.4864,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":2,"name":"Dvitīyā","paksha":"Śukla","full_name":"Śukla Dvitīyā","elongation_degrees":20.5216,"elapsed_within_tithi_degrees":8.5216},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2,"moon_longitude":284.4864,"elapsed_within_degrees":4.4864},"yoga":{"number":15,"name":"Vajra","sum_longitude":188.4512},"karana":{"half_tithi_index":3,"name":"Kaulava"},"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":1981,"month":1,"day":8,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444612.770833,"ahargana":1856147.2708,"kali_year":5082,"ayanamsa_lahiri":23.5879,"grahas":{"sun":{"sidereal_longitude":264.089372,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":285.140672,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false,"latitude":0.6178},"mars":{"sidereal_longitude":283.10007199999995,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":269.046072,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":166.40407200000004,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"venus":{"sidereal_longitude":242.62717199999997,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":165.855372,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":112.3852,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":292.3852,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","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":1,"day":8,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444612.770833,"kali_year":5082,"ahargana":1856147.2708,"sun":{"sidereal_longitude":263.9648,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":284.4864,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":2,"name":"Dvitīyā","paksha":"Śukla","full_name":"Śukla Dvitīyā","elongation_degrees":20.5216,"elapsed_within_tithi_degrees":8.5216},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2,"moon_longitude":284.4864,"elapsed_within_degrees":4.4864},"yoga":{"number":15,"name":"Vajra","sum_longitude":188.4512},"karana":{"half_tithi_index":3,"name":"Kaulava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":0.618,"elongation":20.522},"lunar":{"type":"lunar","occurs":false,"moon_latitude":0.618,"opposition_distance":159.478}},"eclipse_window_40days":[{"offset_days":12,"type":"lunar","occurs":true,"moon_latitude":-1.332,"opposition_distance":1.776}]},"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":"07:11","sunsetLocal":"17:41","solarNoonLocal":"12:26","dayLengthHours":10.497663118142434,"dayLengthDisplay":"10 Hours 29 Mins 52 Secs","nightLengthDisplay":"13 Hours 30 Mins 08 Secs","moonriseLocal":"08:27","moonsetLocal":"19:14","rahuKala":{"name":"Rāhu Kāla","start":"13:45","end":"15:03","startHours":13.745657116989927,"endHours":15.05786500675773,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:11","end":"08:30","startHours":7.1846176681509055,"endHours":8.49682555791871,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:49","end":"11:07","startHours":9.809033447686513,"endHours":11.121241337454318,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:38","end":"09:59","startHours":9.634072395717475,"endHours":9.983994499655555,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:37","end":"07:54","startHours":7.622020298073507,"endHours":7.901957981223972,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:05","end":"12:47","startHours":12.083527123284043,"endHours":12.783371331160204,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:47","end":"06:29","startHours":5.784929252398581,"endHours":6.484773460274743,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:19","end":"07:11","startHours":6.309812408305703,"endHours":7.1846176681509055,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:11","end":"14:53","startHours":14.183059746912528,"endHours":14.882903954788691,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:29","end":"17:53","startHours":17.48228078629334,"endHours":17.88228078629334,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:41","end":"18:07","startHours":17.68228078629334,"endHours":18.119683416215942,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:26","end":"19:11","startHours":17.43228078629334,"endHours":19.18228078629334,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:05","end":"00:47","startHours":24.083527123284043,"endHours":24.783371331160204,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"07:11","end":"08:30","startHours":7.1846176681509055,"endHours":8.49682555791871,"quality":"auspicious"},{"name":"Roga","start":"08:30","end":"09:49","startHours":8.49682555791871,"endHours":9.809033447686513,"quality":"inauspicious"},{"name":"Udveg","start":"09:49","end":"11:07","startHours":9.809033447686513,"endHours":11.121241337454318,"quality":"inauspicious"},{"name":"Chala","start":"11:07","end":"12:26","startHours":11.121241337454318,"endHours":12.433449227222123,"quality":"neutral"},{"name":"Labha","start":"12:26","end":"13:45","startHours":12.433449227222123,"endHours":13.745657116989927,"quality":"auspicious"},{"name":"Amṛta","start":"13:45","end":"15:03","startHours":13.745657116989927,"endHours":15.05786500675773,"quality":"auspicious"},{"name":"Kāla","start":"15:03","end":"16:22","startHours":15.05786500675773,"endHours":16.370072896525535,"quality":"inauspicious"},{"name":"Śubha","start":"16:22","end":"17:41","startHours":16.370072896525535,"endHours":17.68228078629334,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"17:41","end":"19:22","startHours":17.68228078629334,"endHours":19.370072896525535,"quality":"auspicious"},{"name":"Kāla","start":"19:22","end":"21:03","startHours":19.370072896525535,"endHours":21.05786500675773,"quality":"inauspicious"},{"name":"Śubha","start":"21:03","end":"22:45","startHours":21.05786500675773,"endHours":22.74565711698993,"quality":"auspicious"},{"name":"Roga","start":"22:45","end":"00:26","startHours":22.74565711698993,"endHours":24.433449227222123,"quality":"inauspicious"},{"name":"Udveg","start":"00:26","end":"02:07","startHours":24.433449227222123,"endHours":26.121241337454318,"quality":"inauspicious"},{"name":"Chala","start":"02:07","end":"03:49","startHours":26.121241337454318,"endHours":27.809033447686517,"quality":"neutral"},{"name":"Labha","start":"03:49","end":"05:30","startHours":27.809033447686517,"endHours":29.49682555791871,"quality":"auspicious"},{"name":"Amṛta","start":"05:30","end":"07:11","startHours":29.49682555791871,"endHours":31.184617668150906,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:11","end":"08:11","startHours":7.1846176681509055,"endHours":8.184617668150906,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"08:11","end":"09:11","startHours":8.184617668150906,"endHours":9.184617668150906,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"09:11","end":"10:11","startHours":9.184617668150906,"endHours":10.184617668150906,"planetary_lord":"Moon"},{"name":"Hora 4","start":"10:11","end":"11:11","startHours":10.184617668150906,"endHours":11.184617668150906,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"11:11","end":"12:11","startHours":11.184617668150906,"endHours":12.184617668150906,"planetary_lord":"Venus"},{"name":"Hora 6","start":"12:11","end":"13:11","startHours":12.184617668150906,"endHours":13.184617668150906,"planetary_lord":"Sun"},{"name":"Hora 7","start":"13:11","end":"14:11","startHours":13.184617668150906,"endHours":14.184617668150906,"planetary_lord":"Mars"},{"name":"Hora 8","start":"14:11","end":"15:11","startHours":14.184617668150906,"endHours":15.184617668150906,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"15:11","end":"16:11","startHours":15.184617668150906,"endHours":16.184617668150906,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"16:11","end":"17:11","startHours":16.184617668150906,"endHours":17.184617668150906,"planetary_lord":"Moon"},{"name":"Hora 11","start":"17:11","end":"18:11","startHours":17.184617668150906,"endHours":18.184617668150906,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"18:11","end":"19:11","startHours":18.184617668150906,"endHours":19.184617668150906,"planetary_lord":"Venus"},{"name":"Hora 13","start":"19:11","end":"20:11","startHours":19.184617668150906,"endHours":20.184617668150906,"planetary_lord":"Sun"},{"name":"Hora 14","start":"20:11","end":"21:11","startHours":20.184617668150906,"endHours":21.184617668150906,"planetary_lord":"Mars"},{"name":"Hora 15","start":"21:11","end":"22:11","startHours":21.184617668150906,"endHours":22.184617668150906,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"22:11","end":"23:11","startHours":22.184617668150906,"endHours":23.184617668150906,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"23:11","end":"00:11","startHours":23.184617668150906,"endHours":24.184617668150906,"planetary_lord":"Moon"},{"name":"Hora 18","start":"00:11","end":"01:11","startHours":24.184617668150906,"endHours":25.184617668150906,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"01:11","end":"02:11","startHours":25.184617668150906,"endHours":26.184617668150906,"planetary_lord":"Venus"},{"name":"Hora 20","start":"02:11","end":"03:11","startHours":26.184617668150906,"endHours":27.184617668150906,"planetary_lord":"Sun"},{"name":"Hora 21","start":"03:11","end":"04:11","startHours":27.184617668150906,"endHours":28.184617668150906,"planetary_lord":"Mars"},{"name":"Hora 22","start":"04:11","end":"05:11","startHours":28.184617668150906,"endHours":29.184617668150906,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"05:11","end":"06:11","startHours":29.184617668150906,"endHours":30.184617668150906,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"06:11","end":"07:11","startHours":30.184617668150906,"endHours":31.184617668150906,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Citrā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Mithuna","Karka","Tulā","Vṛścika","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Dhanu","Kumbha"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"South-East","rahuVasa":"North-West","anandadiYoga":{"name":"Mudgara","quality":"Inauspicious"},"drikRitu":"Hemanta (Pre-winter) (Drik)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-22.268802884181664,"eotMinutes":-6.7017536333273355,"ayanamsa":23.5879}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Śukla Pakṣa","solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Śukla Dvitīyā · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"lohri","name":"Lohri","name_sanskrit":"लोहड़ी","tradition":"Regional","significance":"Punjab harvest festival; eve of Makara Saṅkrānti. (Approximated as 13/14 January annually; correct via Sun in Dhanu/Makara cusp.)","vrata":false,"detection":{"sun_rashi":"Dhanu"},"precedence":4},{"id":"dhanu-sankranti","name":"Dhanu Saṅkrānti","name_sanskrit":"धनु सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Sagittarius; Dhanu-māsa (Khara-māsa).","vrata":false,"detection":{"sun_rashi":"Dhanu"},"precedence":5}],"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":"mathura"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga January 8, 1981 CE · Mathurā · Vidhyamitra","description":"January 8, 1981 CE for Mathurā: Śukla Dvitīyā, sūryodaya 07:11, sūryāsta 17:41.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/mathura/1981-01-08","hreflang_alternates":{"en":"https://vidhyamitra.com/city/mathura/1981-01-08","sa":"https://sa.vidhyamitra.com/city/mathura/1981-01-08","hi":"https://hi.vidhyamitra.com/city/mathura/1981-01-08","x-default":"https://vidhyamitra.com/city/mathura/1981-01-08"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-14T11:56:27.054Z","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":"2026-05-14T11:56:27.054Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-14T11:56:27.054Z","pillar_versions":{"BOB-History":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}