{"id":"vidhyamitra:city-day:vellore:1981-12-04:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/vellore/1981-12-04","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-12-04","date_display":"December 4, 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":12,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444942.770833,"kali_year":5083,"ahargana":1856477.2708,"sun":{"sidereal_longitude":227.769,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":314.2607,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":86.4917,"elapsed_within_tithi_degrees":2.4917},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3,"moon_longitude":314.2607,"elapsed_within_degrees":7.5941},"yoga":{"number":14,"name":"Harṣaṇa","sum_longitude":182.0297},"karana":{"half_tithi_index":14,"name":"Viṣṭi"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"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":12,"day":4,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444942.770833,"ahargana":1856477.2708,"kali_year":5083,"ayanamsa_lahiri":23.6005,"grahas":{"sun":{"sidereal_longitude":228.202264,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":310.55636400000003,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2},"retrograde":false,"latitude":-2.8521},"mars":{"sidereal_longitude":150.784764,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":224.741764,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":188.14446399999997,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false},"venus":{"sidereal_longitude":273.157064,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":175.527964,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":94.9002,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":274.9002,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"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":12,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444942.770833,"kali_year":5083,"ahargana":1856477.2708,"sun":{"sidereal_longitude":227.769,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":314.2607,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":86.4917,"elapsed_within_tithi_degrees":2.4917},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3,"moon_longitude":314.2607,"elapsed_within_degrees":7.5941},"yoga":{"number":14,"name":"Harṣaṇa","sum_longitude":182.0297},"karana":{"half_tithi_index":14,"name":"Viṣṭi"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.852,"elongation":86.492},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.852,"opposition_distance":93.508}},"eclipse_window_40days":[]},"city":{"slug":"vellore","name":"Vellore, Tamil Nadu","lat":12.9165,"lon":79.1325,"tz_offset_hours":5.5,"state":"Tamil Nadu","country":"IN","tier":"tier-1"},"tier2":{"city":{"slug":"vellore","name":"Vellore, Tamil Nadu","lat":12.9165,"lon":79.1325,"tz_offset_hours":5.5,"state":"Tamil Nadu","country":"IN","tier":"tier-1"},"sunriseLocal":"06:22","sunsetLocal":"17:47","solarNoonLocal":"12:05","dayLengthHours":11.407505419850988,"dayLengthDisplay":"11 Hours 24 Mins 27 Secs","nightLengthDisplay":"12 Hours 35 Mins 33 Secs","moonriseLocal":"11:41","moonsetLocal":"23:27","rahuKala":{"name":"Rāhu Kāla","start":"10:39","end":"12:05","startHours":10.649214746950243,"endHours":12.075152924431617,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"14:56","end":"16:21","startHours":14.927029279394361,"endHours":16.352967456875735,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:48","end":"09:13","startHours":7.797338391987495,"endHours":9.223276569468869,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:02","end":"09:25","startHours":9.03315147913802,"endHours":9.41340165979972,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:51","end":"07:09","startHours":6.846712940333246,"endHours":7.150913084862606,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:42","end":"12:27","startHours":11.694902743769916,"endHours":12.455403105093314,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:51","end":"05:37","startHours":4.850399491859323,"endHours":5.6108998531827226,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:25","end":"06:22","startHours":5.420774762851873,"endHours":6.371400214506122,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:59","end":"14:44","startHours":13.976403827740114,"endHours":14.736904189063514,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:35","end":"17:59","startHours":17.57890563435711,"endHours":17.97890563435711,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:47","end":"18:15","startHours":17.77890563435711,"endHours":18.254218360184232,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:32","end":"19:17","startHours":17.52890563435711,"endHours":19.27890563435711,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:42","end":"00:27","startHours":23.694902743769912,"endHours":24.455403105093314,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"06:22","end":"07:48","startHours":6.371400214506122,"endHours":7.797338391987495,"quality":"neutral"},{"name":"Labha","start":"07:48","end":"09:13","startHours":7.797338391987495,"endHours":9.223276569468869,"quality":"auspicious"},{"name":"Amṛta","start":"09:13","end":"10:39","startHours":9.223276569468869,"endHours":10.649214746950243,"quality":"auspicious"},{"name":"Kāla","start":"10:39","end":"12:05","startHours":10.649214746950243,"endHours":12.075152924431617,"quality":"inauspicious"},{"name":"Śubha","start":"12:05","end":"13:30","startHours":12.075152924431617,"endHours":13.50109110191299,"quality":"auspicious"},{"name":"Roga","start":"13:30","end":"14:56","startHours":13.50109110191299,"endHours":14.927029279394361,"quality":"inauspicious"},{"name":"Udveg","start":"14:56","end":"16:21","startHours":14.927029279394361,"endHours":16.352967456875735,"quality":"inauspicious"},{"name":"Chala","start":"16:21","end":"17:47","startHours":16.352967456875735,"endHours":17.77890563435711,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"17:47","end":"19:21","startHours":17.77890563435711,"endHours":19.352967456875735,"quality":"inauspicious"},{"name":"Udveg","start":"19:21","end":"20:56","startHours":19.352967456875735,"endHours":20.92702927939436,"quality":"inauspicious"},{"name":"Chala","start":"20:56","end":"22:30","startHours":20.92702927939436,"endHours":22.50109110191299,"quality":"neutral"},{"name":"Labha","start":"22:30","end":"00:05","startHours":22.50109110191299,"endHours":24.075152924431613,"quality":"auspicious"},{"name":"Amṛta","start":"00:05","end":"01:39","startHours":24.075152924431613,"endHours":25.649214746950243,"quality":"auspicious"},{"name":"Kāla","start":"01:39","end":"03:13","startHours":25.649214746950243,"endHours":27.22327656946887,"quality":"inauspicious"},{"name":"Śubha","start":"03:13","end":"04:48","startHours":27.22327656946887,"endHours":28.797338391987495,"quality":"auspicious"},{"name":"Roga","start":"04:48","end":"06:22","startHours":28.797338391987495,"endHours":30.37140021450612,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:22","end":"07:22","startHours":6.371400214506122,"endHours":7.371400214506122,"planetary_lord":"Venus"},{"name":"Hora 2","start":"07:22","end":"08:22","startHours":7.371400214506122,"endHours":8.37140021450612,"planetary_lord":"Sun"},{"name":"Hora 3","start":"08:22","end":"09:22","startHours":8.37140021450612,"endHours":9.37140021450612,"planetary_lord":"Mars"},{"name":"Hora 4","start":"09:22","end":"10:22","startHours":9.37140021450612,"endHours":10.37140021450612,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"10:22","end":"11:22","startHours":10.37140021450612,"endHours":11.37140021450612,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"11:22","end":"12:22","startHours":11.37140021450612,"endHours":12.37140021450612,"planetary_lord":"Moon"},{"name":"Hora 7","start":"12:22","end":"13:22","startHours":12.37140021450612,"endHours":13.37140021450612,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"13:22","end":"14:22","startHours":13.37140021450612,"endHours":14.37140021450612,"planetary_lord":"Venus"},{"name":"Hora 9","start":"14:22","end":"15:22","startHours":14.37140021450612,"endHours":15.37140021450612,"planetary_lord":"Sun"},{"name":"Hora 10","start":"15:22","end":"16:22","startHours":15.37140021450612,"endHours":16.37140021450612,"planetary_lord":"Mars"},{"name":"Hora 11","start":"16:22","end":"17:22","startHours":16.37140021450612,"endHours":17.37140021450612,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"17:22","end":"18:22","startHours":17.37140021450612,"endHours":18.37140021450612,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"18:22","end":"19:22","startHours":18.37140021450612,"endHours":19.37140021450612,"planetary_lord":"Moon"},{"name":"Hora 14","start":"19:22","end":"20:22","startHours":19.37140021450612,"endHours":20.37140021450612,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"20:22","end":"21:22","startHours":20.37140021450612,"endHours":21.37140021450612,"planetary_lord":"Venus"},{"name":"Hora 16","start":"21:22","end":"22:22","startHours":21.37140021450612,"endHours":22.37140021450612,"planetary_lord":"Sun"},{"name":"Hora 17","start":"22:22","end":"23:22","startHours":22.37140021450612,"endHours":23.37140021450612,"planetary_lord":"Mars"},{"name":"Hora 18","start":"23:22","end":"00:22","startHours":23.37140021450612,"endHours":24.37140021450612,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"00:22","end":"01:22","startHours":24.37140021450612,"endHours":25.37140021450612,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"01:22","end":"02:22","startHours":25.37140021450612,"endHours":26.37140021450612,"planetary_lord":"Moon"},{"name":"Hora 21","start":"02:22","end":"03:22","startHours":26.37140021450612,"endHours":27.37140021450612,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"03:22","end":"04:22","startHours":27.37140021450612,"endHours":28.37140021450612,"planetary_lord":"Venus"},{"name":"Hora 23","start":"04:22","end":"05:22","startHours":28.37140021450612,"endHours":29.37140021450612,"planetary_lord":"Sun"},{"name":"Hora 24","start":"05:22","end":"06:22","startHours":29.37140021450612,"endHours":30.37140021450612,"planetary_lord":"Mars"}],"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":"West (Paścim)","chandraVasa":"South","rahuVasa":"South-East","anandadiYoga":{"name":"Utpāta","quality":"Inauspicious"},"tropicalRitu":"Hemanta (Pre-winter) (tropical)","vedicRitu":"Śarad (Autumn)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-22.199995519390537,"eotMinutes":8.960824534103129,"ayanamsa":23.6005}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Mārgaśīrṣa","lunar_month_paksha_full":"Mārgaśīrṣa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Mārgaśīrṣa","lunar_month_amanta":"Mārgaśīrṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Vṛścika (Kārttikai)","ritu":"Hemanta (Pre-winter)","display_summary":"Mārgaśīrṣa Śukla Aṣṭamī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[],"todays_walk":{"walk":{"id":"shukra-walk","name":"Śukra Walk","name_sanskrit":"शुक्र यात्रा","type":"graha","description":"Beauty + creativity in dharma + BG 10.36.","step_count":5,"url":"/walk/shukra-walk"},"reason":"Śukravāra (Friday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3137-12-25","event":"Bhīṣma's Mahaprasthan","chart_id":"bhishma","shared_marker":"same Śukla Aṣṭamī","url":"/day/-3137-12-25","relevance":0.5}]},"validity":{"eternal":false,"location_specific":"vellore"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga December 4, 1981 CE · Vellore, Tamil Nadu · Vidhyamitra","description":"December 4, 1981 CE for Vellore, Tamil Nadu: Śukla Aṣṭamī, sūryodaya 06:22, sūryāsta 17:47.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/vellore/1981-12-04","hreflang_alternates":{"en":"https://vidhyamitra.com/city/vellore/1981-12-04","sa":"https://sa.vidhyamitra.com/city/vellore/1981-12-04","hi":"https://hi.vidhyamitra.com/city/vellore/1981-12-04","x-default":"https://vidhyamitra.com/city/vellore/1981-12-04"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T06:18:54.426Z","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":"2026-06-02T06:18:54.426Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T06:18:54.426Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}