{"id":"vidhyamitra:city-day:ranchi:1997-01-21:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/ranchi/1997-01-21","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1997-01-21","date_display":"January 21, 1997 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":1997,"month":1,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450469.770833,"kali_year":5098,"ahargana":1862004.2708,"sun":{"sidereal_longitude":277.1694,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":67.7713,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":150.6019,"elapsed_within_tithi_degrees":6.6019},"nakshatra":{"number":6,"name":"Ārdrā","pada":1,"moon_longitude":67.7713,"elapsed_within_degrees":1.1046},"yoga":{"number":26,"name":"Indra","sum_longitude":344.9406},"karana":{"half_tithi_index":25,"name":"Taitila"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"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":1997,"month":1,"day":21,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2450469.770833,"ahargana":1862004.2708,"kali_year":5098,"ayanamsa_lahiri":23.8119,"grahas":{"sun":{"sidereal_longitude":277.22449200000005,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":68.46209199999998,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":1},"retrograde":false,"latitude":-4.4874},"mars":{"sidereal_longitude":160.596092,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":252.930292,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":276.105192,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":259.792192,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":338.829992,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":162.0531,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":342.0531,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","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":1997,"month":1,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450469.770833,"kali_year":5098,"ahargana":1862004.2708,"sun":{"sidereal_longitude":277.1694,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":67.7713,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":150.6019,"elapsed_within_tithi_degrees":6.6019},"nakshatra":{"number":6,"name":"Ārdrā","pada":1,"moon_longitude":67.7713,"elapsed_within_degrees":1.1046},"yoga":{"number":26,"name":"Indra","sum_longitude":344.9406},"karana":{"half_tithi_index":25,"name":"Taitila"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.487,"elongation":150.602},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.487,"opposition_distance":29.398}},"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":"17:28","solarNoonLocal":"12:00","dayLengthHours":10.93002193458397,"dayLengthDisplay":"10 Hours 55 Mins 48 Secs","nightLengthDisplay":"13 Hours 04 Mins 12 Secs","moonriseLocal":"15:19","moonsetLocal":"04:51","rahuKala":{"name":"Rāhu Kāla","start":"14:44","end":"16:06","startHours":14.732794337798197,"endHours":16.09904707962119,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:16","end":"10:38","startHours":9.267783370506212,"endHours":10.634036112329207,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:00","end":"13:22","startHours":12.000288854152203,"endHours":13.3665415959752,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:05","end":"09:27","startHours":9.085616338263145,"endHours":9.449950402749277,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:59","end":"07:17","startHours":6.9906954674678845,"endHours":7.282162719056791,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:38","end":"12:22","startHours":11.635954789666071,"endHours":12.364622918638334,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:05","end":"05:48","startHours":5.077941628915689,"endHours":5.806609757887954,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:37","end":"06:32","startHours":5.624442725644888,"endHours":6.535277886860219,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:49","end":"14:33","startHours":13.821959176582865,"endHours":14.55062730555513,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:16","end":"17:40","startHours":17.265299821444188,"endHours":17.665299821444187,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:28","end":"17:55","startHours":17.465299821444187,"endHours":17.920717402051853,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:13","end":"18:58","startHours":17.215299821444187,"endHours":18.965299821444187,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:38","end":"00:22","startHours":23.63595478966607,"endHours":24.364622918638336,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"06:32","end":"07:54","startHours":6.535277886860219,"endHours":7.901530628683215,"quality":"inauspicious"},{"name":"Udveg","start":"07:54","end":"09:16","startHours":7.901530628683215,"endHours":9.267783370506212,"quality":"inauspicious"},{"name":"Chala","start":"09:16","end":"10:38","startHours":9.267783370506212,"endHours":10.634036112329207,"quality":"neutral"},{"name":"Labha","start":"10:38","end":"12:00","startHours":10.634036112329207,"endHours":12.000288854152203,"quality":"auspicious"},{"name":"Amṛta","start":"12:00","end":"13:22","startHours":12.000288854152203,"endHours":13.3665415959752,"quality":"auspicious"},{"name":"Kāla","start":"13:22","end":"14:44","startHours":13.3665415959752,"endHours":14.732794337798197,"quality":"inauspicious"},{"name":"Śubha","start":"14:44","end":"16:06","startHours":14.732794337798197,"endHours":16.09904707962119,"quality":"auspicious"},{"name":"Roga","start":"16:06","end":"17:28","startHours":16.09904707962119,"endHours":17.465299821444187,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"17:28","end":"19:06","startHours":17.465299821444187,"endHours":19.09904707962119,"quality":"inauspicious"},{"name":"Śubha","start":"19:06","end":"20:44","startHours":19.09904707962119,"endHours":20.732794337798197,"quality":"auspicious"},{"name":"Roga","start":"20:44","end":"22:22","startHours":20.732794337798197,"endHours":22.3665415959752,"quality":"inauspicious"},{"name":"Udveg","start":"22:22","end":"00:00","startHours":22.3665415959752,"endHours":24.000288854152203,"quality":"inauspicious"},{"name":"Chala","start":"00:00","end":"01:38","startHours":24.000288854152203,"endHours":25.634036112329206,"quality":"neutral"},{"name":"Labha","start":"01:38","end":"03:16","startHours":25.634036112329206,"endHours":27.26778337050621,"quality":"auspicious"},{"name":"Amṛta","start":"03:16","end":"04:54","startHours":27.26778337050621,"endHours":28.901530628683215,"quality":"auspicious"},{"name":"Kāla","start":"04:54","end":"06:32","startHours":28.901530628683215,"endHours":30.535277886860218,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:32","end":"07:32","startHours":6.535277886860219,"endHours":7.535277886860219,"planetary_lord":"Mars"},{"name":"Hora 2","start":"07:32","end":"08:32","startHours":7.535277886860219,"endHours":8.535277886860218,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"08:32","end":"09:32","startHours":8.535277886860218,"endHours":9.535277886860218,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"09:32","end":"10:32","startHours":9.535277886860218,"endHours":10.535277886860218,"planetary_lord":"Moon"},{"name":"Hora 5","start":"10:32","end":"11:32","startHours":10.535277886860218,"endHours":11.535277886860218,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"11:32","end":"12:32","startHours":11.535277886860218,"endHours":12.535277886860218,"planetary_lord":"Venus"},{"name":"Hora 7","start":"12:32","end":"13:32","startHours":12.535277886860218,"endHours":13.535277886860218,"planetary_lord":"Sun"},{"name":"Hora 8","start":"13:32","end":"14:32","startHours":13.535277886860218,"endHours":14.535277886860218,"planetary_lord":"Mars"},{"name":"Hora 9","start":"14:32","end":"15:32","startHours":14.535277886860218,"endHours":15.535277886860218,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"15:32","end":"16:32","startHours":15.535277886860218,"endHours":16.535277886860218,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"16:32","end":"17:32","startHours":16.535277886860218,"endHours":17.535277886860218,"planetary_lord":"Moon"},{"name":"Hora 12","start":"17:32","end":"18:32","startHours":17.535277886860218,"endHours":18.535277886860218,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"18:32","end":"19:32","startHours":18.535277886860218,"endHours":19.535277886860218,"planetary_lord":"Venus"},{"name":"Hora 14","start":"19:32","end":"20:32","startHours":19.535277886860218,"endHours":20.535277886860218,"planetary_lord":"Sun"},{"name":"Hora 15","start":"20:32","end":"21:32","startHours":20.535277886860218,"endHours":21.535277886860218,"planetary_lord":"Mars"},{"name":"Hora 16","start":"21:32","end":"22:32","startHours":21.535277886860218,"endHours":22.535277886860218,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"22:32","end":"23:32","startHours":22.535277886860218,"endHours":23.535277886860218,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"23:32","end":"00:32","startHours":23.535277886860218,"endHours":24.535277886860218,"planetary_lord":"Moon"},{"name":"Hora 19","start":"00:32","end":"01:32","startHours":24.535277886860218,"endHours":25.535277886860218,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"01:32","end":"02:32","startHours":25.535277886860218,"endHours":26.535277886860218,"planetary_lord":"Venus"},{"name":"Hora 21","start":"02:32","end":"03:32","startHours":26.535277886860218,"endHours":27.535277886860218,"planetary_lord":"Sun"},{"name":"Hora 22","start":"03:32","end":"04:32","startHours":27.535277886860218,"endHours":28.535277886860218,"planetary_lord":"Mars"},{"name":"Hora 23","start":"04:32","end":"05:32","startHours":28.535277886860218,"endHours":29.535277886860218,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"05:32","end":"06:32","startHours":29.535277886860218,"endHours":30.535277886860218,"planetary_lord":"Saturn"}],"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","Mithuna","Siṃha","Vṛścika","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Karka","Kanyā","Tulā","Makara","Kumbha"]},"dishaShool":"North (Uttara)","chandraVasa":"South","rahuVasa":"North","anandadiYoga":{"name":"Padma","quality":"Auspicious"},"tropicalRitu":"Śiśira (Winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-19.925200176044758,"eotMinutes":-11.255731249132124,"ayanamsa":23.8119}},"calendars":{"vikram_samvat":2054,"vikram_samvatsara":"Vikṛti","saka_samvat":1919,"saka_samvatsara":"Īśvara","bengali_samvat":1404,"malayalam_era":1173,"nanakshahi_year":528,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Pauṣa","lunar_month_amanta":"Pauṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Makara (Tai)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Śukla Trayodaśī · Vikram 2054 Vikṛti · Śaka 1919 Īśvara"},"festivals":[{"id":"pradosha-vrata","name":"Pradoṣa Vrata","name_sanskrit":"प्रदोष व्रत","tradition":"Shaiva","associated_deity":"Śiva","significance":"Twilight worship of Śiva on Trayodaśī.","vrata":true,"detection":{"any_of":[{"tithi_number":13},{"tithi_number":28}]},"precedence":7}],"todays_walk":{"walk":{"id":"mangala-walk","name":"Maṅgala Walk","name_sanskrit":"मङ्गल यात्रा","type":"graha","description":"Right action + BG 2.31-38 (kṣatriya-dharma).","step_count":7,"url":"/walk/mangala-walk"},"reason":"Maṅgalavāra (Tuesday) — 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 21, 1997 CE · Ranchi, Jharkhand · Vidhyamitra","description":"January 21, 1997 CE for Ranchi, Jharkhand: Śukla Trayodaśī, sūryodaya 06:32, sūryāsta 17:28.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/ranchi/1997-01-21","hreflang_alternates":{"en":"https://vidhyamitra.com/city/ranchi/1997-01-21","sa":"https://sa.vidhyamitra.com/city/ranchi/1997-01-21","hi":"https://hi.vidhyamitra.com/city/ranchi/1997-01-21","x-default":"https://vidhyamitra.com/city/ranchi/1997-01-21"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T07:23:04.108Z","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":"2026-06-02T07:23:04.108Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T07:23:04.108Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}