{"id":"vidhyamitra:city-day:rishikesh:1997-04-10:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1997-04-10","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1997-04-10","date_display":"April 10, 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":4,"day":10,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450548.770833,"kali_year":5098,"ahargana":1862083.2708,"sun":{"sidereal_longitude":356.5519,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":30.9582,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":3,"name":"Tṛtīyā","paksha":"Śukla","full_name":"Śukla Tṛtīyā","elongation_degrees":34.4063,"elapsed_within_tithi_degrees":10.4063},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2,"moon_longitude":30.9582,"elapsed_within_degrees":4.2915},"yoga":{"number":3,"name":"Āyuṣmān","sum_longitude":27.5101},"karana":{"half_tithi_index":5,"name":"Gara"},"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":1997,"month":4,"day":10,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2450548.770833,"ahargana":1862083.2708,"kali_year":5098,"ayanamsa_lahiri":23.8149,"grahas":{"sun":{"sidereal_longitude":356.400174,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":false},"moon":{"sidereal_longitude":30.732173999999986,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2},"retrograde":false,"latitude":-3.5968},"mars":{"sidereal_longitude":144.935074,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":true},"mercury":{"sidereal_longitude":14.724973999999975,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":292.784574,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"venus":{"sidereal_longitude":358.359274,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":347.697974,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":157.8673,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":337.8673,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","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":1997,"month":4,"day":10,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450548.770833,"kali_year":5098,"ahargana":1862083.2708,"sun":{"sidereal_longitude":356.5519,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":30.9582,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":3,"name":"Tṛtīyā","paksha":"Śukla","full_name":"Śukla Tṛtīyā","elongation_degrees":34.4063,"elapsed_within_tithi_degrees":10.4063},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2,"moon_longitude":30.9582,"elapsed_within_degrees":4.2915},"yoga":{"number":3,"name":"Āyuṣmān","sum_longitude":27.5101},"karana":{"half_tithi_index":5,"name":"Gara"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.597,"elongation":34.406},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.597,"opposition_distance":145.594}},"eclipse_window_40days":[{"offset_days":-17,"type":"lunar","occurs":true,"moon_latitude":-0.031,"opposition_distance":1.434}]},"city":{"slug":"rishikesh","name":"Ṛṣikeśa","lat":30.0869,"lon":78.2676,"tz_offset_hours":5.5,"state":"Uttarakhand","country":"IN","tier":"tirtha"},"tier2":{"city":{"slug":"rishikesh","name":"Ṛṣikeśa","lat":30.0869,"lon":78.2676,"tz_offset_hours":5.5,"state":"Uttarakhand","country":"IN","tier":"tirtha"},"sunriseLocal":"05:56","sunsetLocal":"18:41","solarNoonLocal":"12:19","dayLengthHours":12.744891697795516,"dayLengthDisplay":"12 Hours 44 Mins 42 Secs","nightLengthDisplay":"11 Hours 15 Mins 18 Secs","moonriseLocal":"07:47","moonsetLocal":"21:25","rahuKala":{"name":"Rāhu Kāla","start":"13:54","end":"15:30","startHours":13.90205572164386,"endHours":15.4951671838683,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"05:56","end":"07:32","startHours":5.936498410521662,"endHours":7.529609872746102,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:07","end":"10:43","startHours":9.122721334970542,"endHours":10.715832797194981,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:55","end":"09:20","startHours":8.910306473340615,"endHours":9.335136196600466,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:28","end":"06:48","startHours":6.467535564596475,"endHours":6.807399343204356,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:53","end":"12:44","startHours":11.884114536159569,"endHours":12.73377398267927,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:14","end":"05:05","startHours":4.23717951748226,"endHours":5.086838964001961,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:52","end":"05:56","startHours":4.874424102372036,"endHours":5.936498410521662,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:26","end":"15:17","startHours":14.433092875718671,"endHours":15.282752322238371,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:29","end":"18:53","startHours":18.48139010831718,"endHours":18.881390108317177,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:41","end":"19:13","startHours":18.681390108317178,"endHours":19.21242726239199,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:26","end":"20:11","startHours":18.431390108317178,"endHours":20.181390108317178,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:53","end":"00:44","startHours":23.88411453615957,"endHours":24.73377398267927,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"05:56","end":"07:32","startHours":5.936498410521662,"endHours":7.529609872746102,"quality":"auspicious"},{"name":"Roga","start":"07:32","end":"09:07","startHours":7.529609872746102,"endHours":9.122721334970542,"quality":"inauspicious"},{"name":"Udveg","start":"09:07","end":"10:43","startHours":9.122721334970542,"endHours":10.715832797194981,"quality":"inauspicious"},{"name":"Chala","start":"10:43","end":"12:19","startHours":10.715832797194981,"endHours":12.30894425941942,"quality":"neutral"},{"name":"Labha","start":"12:19","end":"13:54","startHours":12.30894425941942,"endHours":13.90205572164386,"quality":"auspicious"},{"name":"Amṛta","start":"13:54","end":"15:30","startHours":13.90205572164386,"endHours":15.4951671838683,"quality":"auspicious"},{"name":"Kāla","start":"15:30","end":"17:05","startHours":15.4951671838683,"endHours":17.08827864609274,"quality":"inauspicious"},{"name":"Śubha","start":"17:05","end":"18:41","startHours":17.08827864609274,"endHours":18.681390108317178,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"18:41","end":"20:05","startHours":18.681390108317178,"endHours":20.08827864609274,"quality":"auspicious"},{"name":"Kāla","start":"20:05","end":"21:30","startHours":20.08827864609274,"endHours":21.495167183868297,"quality":"inauspicious"},{"name":"Śubha","start":"21:30","end":"22:54","startHours":21.495167183868297,"endHours":22.90205572164386,"quality":"auspicious"},{"name":"Roga","start":"22:54","end":"00:19","startHours":22.90205572164386,"endHours":24.30894425941942,"quality":"inauspicious"},{"name":"Udveg","start":"00:19","end":"01:43","startHours":24.30894425941942,"endHours":25.71583279719498,"quality":"inauspicious"},{"name":"Chala","start":"01:43","end":"03:07","startHours":25.71583279719498,"endHours":27.122721334970542,"quality":"neutral"},{"name":"Labha","start":"03:07","end":"04:32","startHours":27.122721334970542,"endHours":28.5296098727461,"quality":"auspicious"},{"name":"Amṛta","start":"04:32","end":"05:56","startHours":28.5296098727461,"endHours":29.93649841052166,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:56","end":"06:56","startHours":5.936498410521662,"endHours":6.936498410521662,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"06:56","end":"07:56","startHours":6.936498410521662,"endHours":7.936498410521662,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"07:56","end":"08:56","startHours":7.936498410521662,"endHours":8.936498410521661,"planetary_lord":"Moon"},{"name":"Hora 4","start":"08:56","end":"09:56","startHours":8.936498410521661,"endHours":9.936498410521661,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"09:56","end":"10:56","startHours":9.936498410521661,"endHours":10.936498410521661,"planetary_lord":"Venus"},{"name":"Hora 6","start":"10:56","end":"11:56","startHours":10.936498410521661,"endHours":11.936498410521661,"planetary_lord":"Sun"},{"name":"Hora 7","start":"11:56","end":"12:56","startHours":11.936498410521661,"endHours":12.936498410521661,"planetary_lord":"Mars"},{"name":"Hora 8","start":"12:56","end":"13:56","startHours":12.936498410521661,"endHours":13.936498410521661,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"13:56","end":"14:56","startHours":13.936498410521661,"endHours":14.936498410521661,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"14:56","end":"15:56","startHours":14.936498410521661,"endHours":15.936498410521661,"planetary_lord":"Moon"},{"name":"Hora 11","start":"15:56","end":"16:56","startHours":15.936498410521661,"endHours":16.93649841052166,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"16:56","end":"17:56","startHours":16.93649841052166,"endHours":17.93649841052166,"planetary_lord":"Venus"},{"name":"Hora 13","start":"17:56","end":"18:56","startHours":17.93649841052166,"endHours":18.93649841052166,"planetary_lord":"Sun"},{"name":"Hora 14","start":"18:56","end":"19:56","startHours":18.93649841052166,"endHours":19.93649841052166,"planetary_lord":"Mars"},{"name":"Hora 15","start":"19:56","end":"20:56","startHours":19.93649841052166,"endHours":20.93649841052166,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"20:56","end":"21:56","startHours":20.93649841052166,"endHours":21.93649841052166,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"21:56","end":"22:56","startHours":21.93649841052166,"endHours":22.93649841052166,"planetary_lord":"Moon"},{"name":"Hora 18","start":"22:56","end":"23:56","startHours":22.93649841052166,"endHours":23.93649841052166,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"23:56","end":"00:56","startHours":23.93649841052166,"endHours":24.93649841052166,"planetary_lord":"Venus"},{"name":"Hora 20","start":"00:56","end":"01:56","startHours":24.93649841052166,"endHours":25.93649841052166,"planetary_lord":"Sun"},{"name":"Hora 21","start":"01:56","end":"02:56","startHours":25.93649841052166,"endHours":26.93649841052166,"planetary_lord":"Mars"},{"name":"Hora 22","start":"02:56","end":"03:56","startHours":26.93649841052166,"endHours":27.93649841052166,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"03:56","end":"04:56","startHours":27.93649841052166,"endHours":28.93649841052166,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"04:56","end":"05:56","startHours":28.93649841052166,"endHours":29.93649841052166,"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"},"drikRitu":"Vasanta (Spring) (Drik)","vedicRitu":"Śiśira (Winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":7.8994189763411855,"eotMinutes":-1.6070555651651,"ayanamsa":23.8149}},"calendars":{"vikram_samvat":2054,"vikram_samvatsara":"Vikṛti","saka_samvat":1919,"saka_samvatsara":"Īśvara","bengali_samvat":1404,"malayalam_era":1173,"nanakshahi_year":528,"lunar_month":"Caitra","lunar_month_paksha_full":"Caitra Śukla Pakṣa","solar_month":"Mīna (Paṅkuṇi)","ritu":"Vasanta (Spring)","display_summary":"Caitra Śukla Tṛtīyā · Vikram 2054 Vikṛti · Śaka 1919 Īśvara"},"festivals":[{"id":"matsya-jayanti","name":"Matsya Jayantī","name_sanskrit":"मत्स्य जयन्ती","tradition":"Vaishnava","associated_deity":"Matsya (1st daśāvatāra of Krishna)","deity_avatara_index":10,"significance":"Matsya saved Vaivasvata Manu and the Vedas during the cosmic deluge.","vrata":false,"detection":{"tithi_number":3,"tithi_paksha":"Śukla","lunar_month":"Caitra"},"precedence":4,"sources":["Bhāgavata 8.24","Matsya Purāṇa 1-2"]},{"id":"mina-sankranti","name":"Mīna Saṅkrānti","name_sanskrit":"मीन सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Pisces; Mīna-māsa begins.","vrata":false,"detection":{"sun_rashi":"Mīna"},"precedence":5}],"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":"rishikesh"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga April 10, 1997 CE · Ṛṣikeśa · Vidhyamitra","description":"April 10, 1997 CE for Ṛṣikeśa: Śukla Tṛtīyā, sūryodaya 05:56, sūryāsta 18:41.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1997-04-10","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1997-04-10","sa":"https://sa.vidhyamitra.com/city/rishikesh/1997-04-10","hi":"https://hi.vidhyamitra.com/city/rishikesh/1997-04-10","x-default":"https://vidhyamitra.com/city/rishikesh/1997-04-10"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-16T23:49:33.111Z","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":"2026-05-16T23:49:33.111Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-16T23:49:33.111Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}