{"id":"vidhyamitra:city-day:ranchi:1980-01-06:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/ranchi/1980-01-06","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1980-01-06","date_display":"January 6, 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":6,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444244.770833,"kali_year":5081,"ahargana":1855779.2708,"sun":{"sidereal_longitude":261.1471,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":125.5257,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":224.3787,"elapsed_within_tithi_degrees":8.3787},"nakshatra":{"number":10,"name":"Maghā","pada":2,"moon_longitude":125.5257,"elapsed_within_degrees":5.5257},"yoga":{"number":3,"name":"Āyuṣmān","sum_longitude":26.6728},"karana":{"half_tithi_index":37,"name":"Bālava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"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":6,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444244.770833,"ahargana":1855779.2708,"kali_year":5081,"ayanamsa_lahiri":23.5738,"grahas":{"sun":{"sidereal_longitude":261.292833,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":123.03363300000001,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":1},"retrograde":false,"latitude":-0.4978},"mars":{"sidereal_longitude":141.42823299999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":252.45833300000004,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":136.263733,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":true},"venus":{"sidereal_longitude":294.31193299999995,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":153.26263300000005,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":131.8836,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":311.8836,"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":6,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444244.770833,"kali_year":5081,"ahargana":1855779.2708,"sun":{"sidereal_longitude":261.1471,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":125.5257,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":224.3787,"elapsed_within_tithi_degrees":8.3787},"nakshatra":{"number":10,"name":"Maghā","pada":2,"moon_longitude":125.5257,"elapsed_within_degrees":5.5257},"yoga":{"number":3,"name":"Āyuṣmān","sum_longitude":26.6728},"karana":{"half_tithi_index":37,"name":"Bālava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.498,"elongation":135.621},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.498,"opposition_distance":44.379}},"eclipse_window_40days":[]},"city":{"slug":"ranchi","name":"Ranchi, Jharkhand","lat":23.3441,"lon":85.3096,"tz_offset_hours":5.5,"state":"Jharkhand","country":"IN","tier":"tier-1"},"tier2":{"city":{"slug":"ranchi","name":"Ranchi, Jharkhand","lat":23.3441,"lon":85.3096,"tz_offset_hours":5.5,"state":"Jharkhand","country":"IN","tier":"tier-1"},"sunriseLocal":"06:32","sunsetLocal":"17:17","solarNoonLocal":"11:55","dayLengthHours":10.752557668768596,"dayLengthDisplay":"10 Hours 45 Mins 09 Secs","nightLengthDisplay":"13 Hours 14 Mins 51 Secs","moonriseLocal":"20:17","moonsetLocal":"09:06","rahuKala":{"name":"Rāhu Kāla","start":"15:57","end":"17:17","startHours":15.94282947757112,"endHours":17.286899186167194,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"11:55","end":"13:15","startHours":11.910620351782896,"endHours":13.254690060378971,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"14:36","end":"15:57","startHours":14.598759768975047,"endHours":15.94282947757112,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:03","end":"09:24","startHours":9.043271640111271,"endHours":9.401690229070224,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:59","end":"07:16","startHours":6.982364753597291,"endHours":7.269099624764453,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:33","end":"12:16","startHours":11.552201762823943,"endHours":12.269038940741849,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:06","end":"05:49","startHours":5.100667161562786,"endHours":5.817504339480693,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:38","end":"06:32","startHours":5.638295045001216,"endHours":6.534341517398599,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:42","end":"14:25","startHours":13.702713296577663,"endHours":14.41955047449557,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:05","end":"17:29","startHours":17.086899186167194,"endHours":17.486899186167193,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:17","end":"17:44","startHours":17.286899186167194,"endHours":17.734922422365884,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:02","end":"18:47","startHours":17.036899186167194,"endHours":18.786899186167194,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:33","end":"00:16","startHours":23.55220176282394,"endHours":24.26903894074185,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:32","end":"07:53","startHours":6.534341517398599,"endHours":7.8784112259946735,"quality":"inauspicious"},{"name":"Chala","start":"07:53","end":"09:13","startHours":7.8784112259946735,"endHours":9.222480934590749,"quality":"neutral"},{"name":"Labha","start":"09:13","end":"10:34","startHours":9.222480934590749,"endHours":10.566550643186822,"quality":"auspicious"},{"name":"Amṛta","start":"10:34","end":"11:55","startHours":10.566550643186822,"endHours":11.910620351782896,"quality":"auspicious"},{"name":"Kāla","start":"11:55","end":"13:15","startHours":11.910620351782896,"endHours":13.254690060378971,"quality":"inauspicious"},{"name":"Śubha","start":"13:15","end":"14:36","startHours":13.254690060378971,"endHours":14.598759768975047,"quality":"auspicious"},{"name":"Roga","start":"14:36","end":"15:57","startHours":14.598759768975047,"endHours":15.94282947757112,"quality":"inauspicious"},{"name":"Udveg","start":"15:57","end":"17:17","startHours":15.94282947757112,"endHours":17.286899186167194,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"17:17","end":"18:57","startHours":17.286899186167194,"endHours":18.94282947757112,"quality":"auspicious"},{"name":"Roga","start":"18:57","end":"20:36","startHours":18.94282947757112,"endHours":20.598759768975043,"quality":"inauspicious"},{"name":"Udveg","start":"20:36","end":"22:15","startHours":20.598759768975043,"endHours":22.25469006037897,"quality":"inauspicious"},{"name":"Chala","start":"22:15","end":"23:55","startHours":22.25469006037897,"endHours":23.910620351782896,"quality":"neutral"},{"name":"Labha","start":"23:55","end":"01:34","startHours":23.910620351782896,"endHours":25.566550643186822,"quality":"auspicious"},{"name":"Amṛta","start":"01:34","end":"03:13","startHours":25.566550643186822,"endHours":27.22248093459075,"quality":"auspicious"},{"name":"Kāla","start":"03:13","end":"04:53","startHours":27.22248093459075,"endHours":28.87841122599467,"quality":"inauspicious"},{"name":"Śubha","start":"04:53","end":"06:32","startHours":28.87841122599467,"endHours":30.534341517398598,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:32","end":"07:32","startHours":6.534341517398599,"endHours":7.534341517398599,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:32","end":"08:32","startHours":7.534341517398599,"endHours":8.534341517398598,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:32","end":"09:32","startHours":8.534341517398598,"endHours":9.534341517398598,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:32","end":"10:32","startHours":9.534341517398598,"endHours":10.534341517398598,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:32","end":"11:32","startHours":10.534341517398598,"endHours":11.534341517398598,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:32","end":"12:32","startHours":11.534341517398598,"endHours":12.534341517398598,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:32","end":"13:32","startHours":12.534341517398598,"endHours":13.534341517398598,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:32","end":"14:32","startHours":13.534341517398598,"endHours":14.534341517398598,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:32","end":"15:32","startHours":14.534341517398598,"endHours":15.534341517398598,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:32","end":"16:32","startHours":15.534341517398598,"endHours":16.534341517398598,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:32","end":"17:32","startHours":16.534341517398598,"endHours":17.534341517398598,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:32","end":"18:32","startHours":17.534341517398598,"endHours":18.534341517398598,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:32","end":"19:32","startHours":18.534341517398598,"endHours":19.534341517398598,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:32","end":"20:32","startHours":19.534341517398598,"endHours":20.534341517398598,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:32","end":"21:32","startHours":20.534341517398598,"endHours":21.534341517398598,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:32","end":"22:32","startHours":21.534341517398598,"endHours":22.534341517398598,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:32","end":"23:32","startHours":22.534341517398598,"endHours":23.534341517398598,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:32","end":"00:32","startHours":23.534341517398598,"endHours":24.534341517398598,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:32","end":"01:32","startHours":24.534341517398598,"endHours":25.534341517398598,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:32","end":"02:32","startHours":25.534341517398598,"endHours":26.534341517398598,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:32","end":"03:32","startHours":26.534341517398598,"endHours":27.534341517398598,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:32","end":"04:32","startHours":27.534341517398598,"endHours":28.534341517398598,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:32","end":"05:32","startHours":28.534341517398598,"endHours":29.534341517398598,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:32","end":"06:32","startHours":29.534341517398598,"endHours":30.534341517398598,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Svātī","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"unfavorable_nakshatras":["Aśvinī","Punarvasu","Puṣya","Aśleṣā","Maghā","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Mithuna","Siṃha","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Kanyā","Vṛścika","Dhanu","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"West","rahuVasa":"North-East","anandadiYoga":{"name":"Mudgara","quality":"Inauspicious"},"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":-22.607652826090376,"eotMinutes":-5.875621106973772,"ayanamsa":23.5738}},"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 Caturthī · Vikram 2037 Śrīmukha · Śaka 1902 Raudra"},"festivals":[{"id":"sankashti-chaturthi","name":"Saṅkaṣṭī Caturthī","name_sanskrit":"सङ्कष्टी चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Gaṇeśa vrata.","vrata":true,"detection":{"tithi_number":19,"tithi_paksha":"Kṛṣṇa"},"precedence":6}],"todays_walk":{"walk":{"id":"surya-walk","name":"Sūrya Walk","name_sanskrit":"सूर्य यात्रा","type":"graha","description":"Self-illumination + BG 4.1 (Sun-lineage of Gītā transmission).","step_count":6,"url":"/walk/surya-walk"},"reason":"Ravivāra (Sunday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":false,"location_specific":"ranchi"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga January 6, 1980 CE · Ranchi, Jharkhand · Vidhyamitra","description":"January 6, 1980 CE for Ranchi, Jharkhand: Kṛṣṇa Caturthī, sūryodaya 06:32, sūryāsta 17:17.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/ranchi/1980-01-06","hreflang_alternates":{"en":"https://vidhyamitra.com/city/ranchi/1980-01-06","sa":"https://sa.vidhyamitra.com/city/ranchi/1980-01-06","hi":"https://hi.vidhyamitra.com/city/ranchi/1980-01-06","x-default":"https://vidhyamitra.com/city/ranchi/1980-01-06"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-03T00:16:20.298Z","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":"2026-06-03T00:16:20.298Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-03T00:16:20.299Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}