{"id":"vidhyamitra:city-day:vrindavan:1980-01-10:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/vrindavan/1980-01-10","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1980-01-10","date_display":"January 10, 1980 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":1980,"month":1,"day":10,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444248.770833,"kali_year":5081,"ahargana":1855783.2708,"sun":{"sidereal_longitude":265.2585,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":172.68,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":23,"name":"Aṣṭamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Aṣṭamī","elongation_degrees":267.4215,"elapsed_within_tithi_degrees":3.4215},"nakshatra":{"number":13,"name":"Hasta","pada":4,"moon_longitude":172.68,"elapsed_within_degrees":12.68},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":77.9385},"karana":{"half_tithi_index":44,"name":"Bālava"},"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":1980,"month":1,"day":10,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444248.770833,"ahargana":1855783.2708,"kali_year":5081,"ayanamsa_lahiri":23.5739,"grahas":{"sun":{"sidereal_longitude":265.3693800000001,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":170.33467999999993,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":false,"latitude":2.951},"mars":{"sidereal_longitude":141.81887999999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":258.75998000000004,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":136.10417999999999,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":true},"venus":{"sidereal_longitude":299.2217800000001,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":153.25638000000004,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":131.6717,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":311.6717,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2},"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":1980,"month":1,"day":10,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444248.770833,"kali_year":5081,"ahargana":1855783.2708,"sun":{"sidereal_longitude":265.2585,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":172.68,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":23,"name":"Aṣṭamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Aṣṭamī","elongation_degrees":267.4215,"elapsed_within_tithi_degrees":3.4215},"nakshatra":{"number":13,"name":"Hasta","pada":4,"moon_longitude":172.68,"elapsed_within_degrees":12.68},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":77.9385},"karana":{"half_tithi_index":44,"name":"Bālava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.951,"elongation":92.578},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.951,"opposition_distance":87.422}},"eclipse_window_40days":[]},"city":{"slug":"vrindavan","name":"Vṛndāvana","lat":27.565,"lon":77.6593,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"tier2":{"city":{"slug":"vrindavan","name":"Vṛndāvana","lat":27.565,"lon":77.6593,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"sunriseLocal":"07:12","sunsetLocal":"17:42","solarNoonLocal":"12:27","dayLengthHours":10.506585374718462,"dayLengthDisplay":"10 Hours 30 Mins 24 Secs","nightLengthDisplay":"13 Hours 29 Mins 36 Secs","moonriseLocal":"00:16","moonsetLocal":"11:58","rahuKala":{"name":"Rāhu Kāla","start":"13:46","end":"15:04","startHours":13.761025235582576,"endHours":15.074348407422383,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:12","end":"08:30","startHours":7.194409376383536,"endHours":8.507732548223345,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:49","end":"11:08","startHours":9.821055720063152,"endHours":11.134378891902958,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:39","end":"10:00","startHours":9.645945963817844,"endHours":9.996165476308459,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:38","end":"07:55","startHours":7.632183766996805,"endHours":7.912359376989297,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:06","end":"12:48","startHours":12.09748255125215,"endHours":12.797921576233383,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:48","end":"06:30","startHours":5.793531326421075,"endHours":6.4939703514023055,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:19","end":"07:12","startHours":6.318860595156997,"endHours":7.194409376383536,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:12","end":"14:54","startHours":14.198799626195843,"endHours":14.899238651177074,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:30","end":"17:54","startHours":17.500994751102,"endHours":17.900994751101997,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:42","end":"18:08","startHours":17.700994751101998,"endHours":18.13876914171527,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:27","end":"19:12","startHours":17.450994751101998,"endHours":19.200994751101998,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:06","end":"00:48","startHours":24.097482551252153,"endHours":24.79792157623338,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"07:12","end":"08:30","startHours":7.194409376383536,"endHours":8.507732548223345,"quality":"auspicious"},{"name":"Roga","start":"08:30","end":"09:49","startHours":8.507732548223345,"endHours":9.821055720063152,"quality":"inauspicious"},{"name":"Udveg","start":"09:49","end":"11:08","startHours":9.821055720063152,"endHours":11.134378891902958,"quality":"inauspicious"},{"name":"Chala","start":"11:08","end":"12:27","startHours":11.134378891902958,"endHours":12.447702063742767,"quality":"neutral"},{"name":"Labha","start":"12:27","end":"13:46","startHours":12.447702063742767,"endHours":13.761025235582576,"quality":"auspicious"},{"name":"Amṛta","start":"13:46","end":"15:04","startHours":13.761025235582576,"endHours":15.074348407422383,"quality":"auspicious"},{"name":"Kāla","start":"15:04","end":"16:23","startHours":15.074348407422383,"endHours":16.38767157926219,"quality":"inauspicious"},{"name":"Śubha","start":"16:23","end":"17:42","startHours":16.38767157926219,"endHours":17.700994751101998,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"17:42","end":"19:23","startHours":17.700994751101998,"endHours":19.38767157926219,"quality":"auspicious"},{"name":"Kāla","start":"19:23","end":"21:04","startHours":19.38767157926219,"endHours":21.074348407422384,"quality":"inauspicious"},{"name":"Śubha","start":"21:04","end":"22:46","startHours":21.074348407422384,"endHours":22.761025235582576,"quality":"auspicious"},{"name":"Roga","start":"22:46","end":"00:27","startHours":22.761025235582576,"endHours":24.447702063742767,"quality":"inauspicious"},{"name":"Udveg","start":"00:27","end":"02:08","startHours":24.447702063742767,"endHours":26.13437889190296,"quality":"inauspicious"},{"name":"Chala","start":"02:08","end":"03:49","startHours":26.13437889190296,"endHours":27.82105572006315,"quality":"neutral"},{"name":"Labha","start":"03:49","end":"05:30","startHours":27.82105572006315,"endHours":29.507732548223345,"quality":"auspicious"},{"name":"Amṛta","start":"05:30","end":"07:12","startHours":29.507732548223345,"endHours":31.194409376383536,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:12","end":"08:12","startHours":7.194409376383536,"endHours":8.194409376383536,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"08:12","end":"09:12","startHours":8.194409376383536,"endHours":9.194409376383536,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"09:12","end":"10:12","startHours":9.194409376383536,"endHours":10.194409376383536,"planetary_lord":"Moon"},{"name":"Hora 4","start":"10:12","end":"11:12","startHours":10.194409376383536,"endHours":11.194409376383536,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"11:12","end":"12:12","startHours":11.194409376383536,"endHours":12.194409376383536,"planetary_lord":"Venus"},{"name":"Hora 6","start":"12:12","end":"13:12","startHours":12.194409376383536,"endHours":13.194409376383536,"planetary_lord":"Sun"},{"name":"Hora 7","start":"13:12","end":"14:12","startHours":13.194409376383536,"endHours":14.194409376383536,"planetary_lord":"Mars"},{"name":"Hora 8","start":"14:12","end":"15:12","startHours":14.194409376383536,"endHours":15.194409376383536,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"15:12","end":"16:12","startHours":15.194409376383536,"endHours":16.194409376383536,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"16:12","end":"17:12","startHours":16.194409376383536,"endHours":17.194409376383536,"planetary_lord":"Moon"},{"name":"Hora 11","start":"17:12","end":"18:12","startHours":17.194409376383536,"endHours":18.194409376383536,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"18:12","end":"19:12","startHours":18.194409376383536,"endHours":19.194409376383536,"planetary_lord":"Venus"},{"name":"Hora 13","start":"19:12","end":"20:12","startHours":19.194409376383536,"endHours":20.194409376383536,"planetary_lord":"Sun"},{"name":"Hora 14","start":"20:12","end":"21:12","startHours":20.194409376383536,"endHours":21.194409376383536,"planetary_lord":"Mars"},{"name":"Hora 15","start":"21:12","end":"22:12","startHours":21.194409376383536,"endHours":22.194409376383536,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"22:12","end":"23:12","startHours":22.194409376383536,"endHours":23.194409376383536,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"23:12","end":"00:12","startHours":23.194409376383536,"endHours":24.194409376383536,"planetary_lord":"Moon"},{"name":"Hora 18","start":"00:12","end":"01:12","startHours":24.194409376383536,"endHours":25.194409376383536,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"01:12","end":"02:12","startHours":25.194409376383536,"endHours":26.194409376383536,"planetary_lord":"Venus"},{"name":"Hora 20","start":"02:12","end":"03:12","startHours":26.194409376383536,"endHours":27.194409376383536,"planetary_lord":"Sun"},{"name":"Hora 21","start":"03:12","end":"04:12","startHours":27.194409376383536,"endHours":28.194409376383536,"planetary_lord":"Mars"},{"name":"Hora 22","start":"04:12","end":"05:12","startHours":28.194409376383536,"endHours":29.194409376383536,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"05:12","end":"06:12","startHours":29.194409376383536,"endHours":30.194409376383536,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"06:12","end":"07:12","startHours":30.194409376383536,"endHours":31.194409376383536,"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","Kanyā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Tulā","Dhanu","Makara"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"North-West","rahuVasa":"North-West","anandadiYoga":{"name":"Ānanda","quality":"Auspicious"},"tropicalRitu":"Hemanta (Pre-winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-22.097969863452025,"eotMinutes":-7.499323824565993,"ayanamsa":23.5739}},"calendars":{"vikram_samvat":2037,"vikram_samvatsara":"Śrīmukha","saka_samvat":1902,"saka_samvatsara":"Raudra","bengali_samvat":1387,"malayalam_era":1156,"nanakshahi_year":511,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Māgha","lunar_month_amanta":"Pauṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Dhanus (Mārgaḻi)","ritu":"Śiśira (Winter)","display_summary":"Māgha Kṛṣṇa Aṣṭamī · Vikram 2037 Śrīmukha · Śaka 1902 Raudra"},"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":"-3226-07-09","event":"Bhagavān Krishna's birth at Mathurā","chart_id":"krishna","shared_marker":"same Kṛṣṇa Aṣṭamī","url":"/day/-3226-07-09","relevance":0.5}]},"validity":{"eternal":false,"location_specific":"vrindavan"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga January 10, 1980 CE · Vṛndāvana · Vidhyamitra","description":"January 10, 1980 CE for Vṛndāvana: Kṛṣṇa Aṣṭamī, sūryodaya 07:12, sūryāsta 17:42.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/vrindavan/1980-01-10","hreflang_alternates":{"en":"https://vidhyamitra.com/city/vrindavan/1980-01-10","sa":"https://sa.vidhyamitra.com/city/vrindavan/1980-01-10","hi":"https://hi.vidhyamitra.com/city/vrindavan/1980-01-10","x-default":"https://vidhyamitra.com/city/vrindavan/1980-01-10"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T08:37:06.933Z","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":"2026-06-01T08:37:06.933Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T08:37:06.933Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}