{"id":"vidhyamitra:city-day:agra:1981-12-10:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/agra/1981-12-10","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-12-10","date_display":"December 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":12,"day":10,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444948.770833,"kali_year":5083,"ahargana":1856483.2708,"sun":{"sidereal_longitude":233.9105,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":36.0429,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":14,"name":"Caturdaśī","paksha":"Śukla","full_name":"Śukla Caturdaśī","elongation_degrees":162.1325,"elapsed_within_tithi_degrees":6.1325},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3,"moon_longitude":36.0429,"elapsed_within_degrees":9.3763},"yoga":{"number":21,"name":"Siddha","sum_longitude":269.9534},"karana":{"half_tithi_index":27,"name":"Vaṇija"},"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":12,"day":10,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444948.770833,"ahargana":1856483.2708,"kali_year":5083,"ayanamsa_lahiri":23.6007,"grahas":{"sun":{"sidereal_longitude":234.29443500000002,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":35.34633500000001,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3},"retrograde":false,"latitude":-3.8374},"mars":{"sidereal_longitude":153.76113499999997,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":234.195335,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":189.26163500000007,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false},"venus":{"sidereal_longitude":277.4662350000001,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":176.04963500000008,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":94.5823,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":274.5823,"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":10,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444948.770833,"kali_year":5083,"ahargana":1856483.2708,"sun":{"sidereal_longitude":233.9105,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":36.0429,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":14,"name":"Caturdaśī","paksha":"Śukla","full_name":"Śukla Caturdaśī","elongation_degrees":162.1325,"elapsed_within_tithi_degrees":6.1325},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3,"moon_longitude":36.0429,"elapsed_within_degrees":9.3763},"yoga":{"number":21,"name":"Siddha","sum_longitude":269.9534},"karana":{"half_tithi_index":27,"name":"Vaṇija"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.837,"elongation":162.132},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.837,"opposition_distance":17.868}},"eclipse_window_40days":[]},"city":{"slug":"agra","name":"Agra, Uttar Pradesh","lat":27.1767,"lon":78.0081,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tier-1"},"tier2":{"city":{"slug":"agra","name":"Agra, Uttar Pradesh","lat":27.1767,"lon":78.0081,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tier-1"},"sunriseLocal":"06:57","sunsetLocal":"17:26","solarNoonLocal":"12:12","dayLengthHours":10.469669577461248,"dayLengthDisplay":"10 Hours 28 Mins 11 Secs","nightLengthDisplay":"13 Hours 31 Mins 49 Secs","moonriseLocal":"16:10","moonsetLocal":"05:41","rahuKala":{"name":"Rāhu Kāla","start":"13:30","end":"14:49","startHours":13.501001831545071,"endHours":14.809710528727727,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"06:57","end":"08:16","startHours":6.957458345631791,"endHours":8.266167042814446,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:34","end":"10:53","startHours":9.574875739997102,"endHours":10.88358443717976,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:24","end":"09:45","startHours":9.400381247039416,"endHours":9.74937023295479,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:24","end":"07:40","startHours":7.393694578026009,"endHours":7.672885766758309,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:51","end":"12:32","startHours":11.843304148447041,"endHours":12.54128212027779,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:34","end":"06:16","startHours":5.561502401970291,"endHours":6.259480373801041,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:05","end":"06:57","startHours":6.0849858808433535,"endHours":6.957458345631791,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:56","end":"14:38","startHours":13.93723806393929,"endHours":14.63521603577004,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:14","end":"17:38","startHours":17.22712792309304,"endHours":17.627127923093038,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:26","end":"17:52","startHours":17.42712792309304,"endHours":17.863364155487258,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:11","end":"18:56","startHours":17.17712792309304,"endHours":18.92712792309304,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:51","end":"00:32","startHours":23.84330414844704,"endHours":24.541282120277792,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"06:57","end":"08:16","startHours":6.957458345631791,"endHours":8.266167042814446,"quality":"auspicious"},{"name":"Roga","start":"08:16","end":"09:34","startHours":8.266167042814446,"endHours":9.574875739997102,"quality":"inauspicious"},{"name":"Udveg","start":"09:34","end":"10:53","startHours":9.574875739997102,"endHours":10.88358443717976,"quality":"inauspicious"},{"name":"Chala","start":"10:53","end":"12:12","startHours":10.88358443717976,"endHours":12.192293134362416,"quality":"neutral"},{"name":"Labha","start":"12:12","end":"13:30","startHours":12.192293134362416,"endHours":13.501001831545071,"quality":"auspicious"},{"name":"Amṛta","start":"13:30","end":"14:49","startHours":13.501001831545071,"endHours":14.809710528727727,"quality":"auspicious"},{"name":"Kāla","start":"14:49","end":"16:07","startHours":14.809710528727727,"endHours":16.118419225910383,"quality":"inauspicious"},{"name":"Śubha","start":"16:07","end":"17:26","startHours":16.118419225910383,"endHours":17.42712792309304,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"17:26","end":"19:07","startHours":17.42712792309304,"endHours":19.118419225910383,"quality":"auspicious"},{"name":"Kāla","start":"19:07","end":"20:49","startHours":19.118419225910383,"endHours":20.809710528727727,"quality":"inauspicious"},{"name":"Śubha","start":"20:49","end":"22:30","startHours":20.809710528727727,"endHours":22.50100183154507,"quality":"auspicious"},{"name":"Roga","start":"22:30","end":"00:12","startHours":22.50100183154507,"endHours":24.192293134362416,"quality":"inauspicious"},{"name":"Udveg","start":"00:12","end":"01:53","startHours":24.192293134362416,"endHours":25.883584437179756,"quality":"inauspicious"},{"name":"Chala","start":"01:53","end":"03:34","startHours":25.883584437179756,"endHours":27.574875739997104,"quality":"neutral"},{"name":"Labha","start":"03:34","end":"05:16","startHours":27.574875739997104,"endHours":29.266167042814445,"quality":"auspicious"},{"name":"Amṛta","start":"05:16","end":"06:57","startHours":29.266167042814445,"endHours":30.957458345631792,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:57","end":"07:57","startHours":6.957458345631791,"endHours":7.957458345631791,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"07:57","end":"08:57","startHours":7.957458345631791,"endHours":8.95745834563179,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"08:57","end":"09:57","startHours":8.95745834563179,"endHours":9.95745834563179,"planetary_lord":"Moon"},{"name":"Hora 4","start":"09:57","end":"10:57","startHours":9.95745834563179,"endHours":10.95745834563179,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"10:57","end":"11:57","startHours":10.95745834563179,"endHours":11.95745834563179,"planetary_lord":"Venus"},{"name":"Hora 6","start":"11:57","end":"12:57","startHours":11.95745834563179,"endHours":12.95745834563179,"planetary_lord":"Sun"},{"name":"Hora 7","start":"12:57","end":"13:57","startHours":12.95745834563179,"endHours":13.95745834563179,"planetary_lord":"Mars"},{"name":"Hora 8","start":"13:57","end":"14:57","startHours":13.95745834563179,"endHours":14.95745834563179,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"14:57","end":"15:57","startHours":14.95745834563179,"endHours":15.95745834563179,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"15:57","end":"16:57","startHours":15.95745834563179,"endHours":16.957458345631792,"planetary_lord":"Moon"},{"name":"Hora 11","start":"16:57","end":"17:57","startHours":16.957458345631792,"endHours":17.957458345631792,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"17:57","end":"18:57","startHours":17.957458345631792,"endHours":18.957458345631792,"planetary_lord":"Venus"},{"name":"Hora 13","start":"18:57","end":"19:57","startHours":18.957458345631792,"endHours":19.957458345631792,"planetary_lord":"Sun"},{"name":"Hora 14","start":"19:57","end":"20:57","startHours":19.957458345631792,"endHours":20.957458345631792,"planetary_lord":"Mars"},{"name":"Hora 15","start":"20:57","end":"21:57","startHours":20.957458345631792,"endHours":21.957458345631792,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"21:57","end":"22:57","startHours":21.957458345631792,"endHours":22.957458345631792,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"22:57","end":"23:57","startHours":22.957458345631792,"endHours":23.957458345631792,"planetary_lord":"Moon"},{"name":"Hora 18","start":"23:57","end":"00:57","startHours":23.957458345631792,"endHours":24.957458345631792,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"00:57","end":"01:57","startHours":24.957458345631792,"endHours":25.957458345631792,"planetary_lord":"Venus"},{"name":"Hora 20","start":"01:57","end":"02:57","startHours":25.957458345631792,"endHours":26.957458345631792,"planetary_lord":"Sun"},{"name":"Hora 21","start":"02:57","end":"03:57","startHours":26.957458345631792,"endHours":27.957458345631792,"planetary_lord":"Mars"},{"name":"Hora 22","start":"03:57","end":"04:57","startHours":27.957458345631792,"endHours":28.957458345631792,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"04:57","end":"05:57","startHours":28.957458345631792,"endHours":29.957458345631792,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"05:57","end":"06:57","startHours":29.957458345631792,"endHours":30.957458345631792,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Hasta","Citrā","Svātī","Viśākhā","Anurādhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Karka","Tulā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Siṃha","Kanyā","Dhanu","Makara"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"South-East","rahuVasa":"North-West","anandadiYoga":{"name":"Siddhi","quality":"Auspicious"},"tropicalRitu":"Hemanta (Pre-winter) (tropical)","vedicRitu":"Śarad (Autumn)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-22.885390663365694,"eotMinutes":6.4300119382551255,"ayanamsa":23.6007}},"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 Caturdaśī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[],"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":[{"historical_date":"-3137-10-04","event":"Mahābhārata Day 1 (Bhagavad Gītā delivered)","chart_id":"krishna","shared_marker":"same Kṛttikā","url":"/day/-3137-10-04","relevance":0.5},{"historical_date":"-3137-12-25","event":"Bhīṣma's Mahaprasthan","chart_id":"bhishma","shared_marker":"same Kṛttikā","url":"/day/-3137-12-25","relevance":0.5}]},"validity":{"eternal":false,"location_specific":"agra"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga December 10, 1981 CE · Agra, Uttar Pradesh · Vidhyamitra","description":"December 10, 1981 CE for Agra, Uttar Pradesh: Śukla Caturdaśī, sūryodaya 06:57, sūryāsta 17:26.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/agra/1981-12-10","hreflang_alternates":{"en":"https://vidhyamitra.com/city/agra/1981-12-10","sa":"https://sa.vidhyamitra.com/city/agra/1981-12-10","hi":"https://hi.vidhyamitra.com/city/agra/1981-12-10","x-default":"https://vidhyamitra.com/city/agra/1981-12-10"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T08:19:06.215Z","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":"2026-06-02T08:19:06.215Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T08:19:06.215Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}