{"id":"vidhyamitra:city-day:phoenix:1997-04-10:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/phoenix/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":"phoenix","name":"Phoenix, USA","lat":33.4484,"lon":-112.074,"tz_offset_hours":-7,"country":"US","tier":"diaspora"},"tier2":{"city":{"slug":"phoenix","name":"Phoenix, USA","lat":33.4484,"lon":-112.074,"tz_offset_hours":-7,"country":"US","tier":"diaspora"},"sunriseLocal":"06:05","sunsetLocal":"18:55","solarNoonLocal":"12:30","dayLengthHours":12.836265886871432,"dayLengthDisplay":"12 Hours 50 Mins 11 Secs","nightLengthDisplay":"11 Hours 09 Mins 49 Secs","moonriseLocal":"07:52","moonsetLocal":"21:43","rahuKala":{"name":"Rāhu Kāla","start":"14:06","end":"15:42","startHours":14.102917495278346,"endHours":15.707450731137275,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"06:05","end":"07:41","startHours":6.0802513159837,"endHours":7.684784551842629,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:17","end":"10:54","startHours":9.289317787701558,"endHours":10.893851023560487,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:05","end":"09:30","startHours":9.075380022920367,"endHours":9.503255552482749,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:37","end":"06:57","startHours":6.615095727936676,"endHours":6.957396151586582,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:04","end":"12:56","startHours":12.070508729857035,"endHours":12.926259788981799,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:22","end":"05:13","startHours":4.368749197734176,"endHours":5.2245002568589385,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:01","end":"06:05","startHours":5.010562492077748,"endHours":6.0802513159837,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:38","end":"15:30","startHours":14.63776190723132,"endHours":15.493512966356082,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:43","end":"19:07","startHours":18.716517202855133,"endHours":19.116517202855132,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:55","end":"19:27","startHours":18.916517202855132,"endHours":19.451361614808107,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:40","end":"20:25","startHours":18.666517202855132,"endHours":20.416517202855132,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:04","end":"00:56","startHours":24.070508729857035,"endHours":24.9262597889818,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"06:05","end":"07:41","startHours":6.0802513159837,"endHours":7.684784551842629,"quality":"auspicious"},{"name":"Roga","start":"07:41","end":"09:17","startHours":7.684784551842629,"endHours":9.289317787701558,"quality":"inauspicious"},{"name":"Udveg","start":"09:17","end":"10:54","startHours":9.289317787701558,"endHours":10.893851023560487,"quality":"inauspicious"},{"name":"Chala","start":"10:54","end":"12:30","startHours":10.893851023560487,"endHours":12.498384259419417,"quality":"neutral"},{"name":"Labha","start":"12:30","end":"14:06","startHours":12.498384259419417,"endHours":14.102917495278346,"quality":"auspicious"},{"name":"Amṛta","start":"14:06","end":"15:42","startHours":14.102917495278346,"endHours":15.707450731137275,"quality":"auspicious"},{"name":"Kāla","start":"15:42","end":"17:19","startHours":15.707450731137275,"endHours":17.311983966996202,"quality":"inauspicious"},{"name":"Śubha","start":"17:19","end":"18:55","startHours":17.311983966996202,"endHours":18.916517202855132,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"18:55","end":"20:19","startHours":18.916517202855132,"endHours":20.311983966996202,"quality":"auspicious"},{"name":"Kāla","start":"20:19","end":"21:42","startHours":20.311983966996202,"endHours":21.707450731137275,"quality":"inauspicious"},{"name":"Śubha","start":"21:42","end":"23:06","startHours":21.707450731137275,"endHours":23.102917495278344,"quality":"auspicious"},{"name":"Roga","start":"23:06","end":"00:30","startHours":23.102917495278344,"endHours":24.498384259419417,"quality":"inauspicious"},{"name":"Udveg","start":"00:30","end":"01:54","startHours":24.498384259419417,"endHours":25.893851023560487,"quality":"inauspicious"},{"name":"Chala","start":"01:54","end":"03:17","startHours":25.893851023560487,"endHours":27.289317787701556,"quality":"neutral"},{"name":"Labha","start":"03:17","end":"04:41","startHours":27.289317787701556,"endHours":28.68478455184263,"quality":"auspicious"},{"name":"Amṛta","start":"04:41","end":"06:05","startHours":28.68478455184263,"endHours":30.080251315983702,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:05","end":"07:05","startHours":6.0802513159837,"endHours":7.0802513159837,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"07:05","end":"08:05","startHours":7.0802513159837,"endHours":8.0802513159837,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"08:05","end":"09:05","startHours":8.0802513159837,"endHours":9.0802513159837,"planetary_lord":"Moon"},{"name":"Hora 4","start":"09:05","end":"10:05","startHours":9.0802513159837,"endHours":10.0802513159837,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"10:05","end":"11:05","startHours":10.0802513159837,"endHours":11.0802513159837,"planetary_lord":"Venus"},{"name":"Hora 6","start":"11:05","end":"12:05","startHours":11.0802513159837,"endHours":12.0802513159837,"planetary_lord":"Sun"},{"name":"Hora 7","start":"12:05","end":"13:05","startHours":12.0802513159837,"endHours":13.0802513159837,"planetary_lord":"Mars"},{"name":"Hora 8","start":"13:05","end":"14:05","startHours":13.0802513159837,"endHours":14.0802513159837,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"14:05","end":"15:05","startHours":14.0802513159837,"endHours":15.0802513159837,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"15:05","end":"16:05","startHours":15.0802513159837,"endHours":16.080251315983702,"planetary_lord":"Moon"},{"name":"Hora 11","start":"16:05","end":"17:05","startHours":16.080251315983702,"endHours":17.080251315983702,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"17:05","end":"18:05","startHours":17.080251315983702,"endHours":18.080251315983702,"planetary_lord":"Venus"},{"name":"Hora 13","start":"18:05","end":"19:05","startHours":18.080251315983702,"endHours":19.080251315983702,"planetary_lord":"Sun"},{"name":"Hora 14","start":"19:05","end":"20:05","startHours":19.080251315983702,"endHours":20.080251315983702,"planetary_lord":"Mars"},{"name":"Hora 15","start":"20:05","end":"21:05","startHours":20.080251315983702,"endHours":21.080251315983702,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"21:05","end":"22:05","startHours":21.080251315983702,"endHours":22.080251315983702,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"22:05","end":"23:05","startHours":22.080251315983702,"endHours":23.080251315983702,"planetary_lord":"Moon"},{"name":"Hora 18","start":"23:05","end":"00:05","startHours":23.080251315983702,"endHours":24.080251315983702,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"00:05","end":"01:05","startHours":24.080251315983702,"endHours":25.080251315983702,"planetary_lord":"Venus"},{"name":"Hora 20","start":"01:05","end":"02:05","startHours":25.080251315983702,"endHours":26.080251315983702,"planetary_lord":"Sun"},{"name":"Hora 21","start":"02:05","end":"03:05","startHours":26.080251315983702,"endHours":27.080251315983702,"planetary_lord":"Mars"},{"name":"Hora 22","start":"03:05","end":"04:05","startHours":27.080251315983702,"endHours":28.080251315983702,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"04:05","end":"05:05","startHours":28.080251315983702,"endHours":29.080251315983702,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"05:05","end":"06:05","startHours":29.080251315983702,"endHours":30.080251315983702,"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":"Vasanta (Spring) (tropical)","vedicRitu":"Śiśira (Winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","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","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Caitra","lunar_month_amanta":"Caitra","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"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"]}],"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":"phoenix"},"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 · Phoenix, USA · Vidhyamitra","description":"April 10, 1997 CE for Phoenix, USA: Śukla Tṛtīyā, sūryodaya 06:05, sūryāsta 18:55.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/phoenix/1997-04-10","hreflang_alternates":{"en":"https://vidhyamitra.com/city/phoenix/1997-04-10","sa":"https://sa.vidhyamitra.com/city/phoenix/1997-04-10","hi":"https://hi.vidhyamitra.com/city/phoenix/1997-04-10","x-default":"https://vidhyamitra.com/city/phoenix/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":"2026-06-01T23:24:18.075Z","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":"2026-06-01T23:24:18.075Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T23:24:18.075Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}