{"id":"vidhyamitra:city-day:phoenix:1998-07-09:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/phoenix/1998-07-09","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1998-07-09","date_display":"July 9, 1998 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":1998,"month":7,"day":9,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2451003.770833,"kali_year":5100,"ahargana":1862538.2708,"sun":{"sidereal_longitude":82.4394,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":253.8693,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":171.43,"elapsed_within_tithi_degrees":3.43},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1,"moon_longitude":253.8693,"elapsed_within_degrees":0.536},"yoga":{"number":26,"name":"Indra","sum_longitude":336.3087},"karana":{"half_tithi_index":28,"name":"Viṣṭi"},"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":1998,"month":7,"day":9,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2451003.770833,"ahargana":1862538.2708,"kali_year":5100,"ayanamsa_lahiri":23.8323,"grahas":{"sun":{"sidereal_longitude":82.82388900000001,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":1},"retrograde":false},"moon":{"sidereal_longitude":255.05468900000005,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false,"latitude":3.8918},"mars":{"sidereal_longitude":68.020489,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":108.07848899999999,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":334.08808899999997,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":53.476089,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":8.558388999999977,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":133.7592,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":313.7592,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","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":1998,"month":7,"day":9,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2451003.770833,"kali_year":5100,"ahargana":1862538.2708,"sun":{"sidereal_longitude":82.4394,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":253.8693,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":171.43,"elapsed_within_tithi_degrees":3.43},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1,"moon_longitude":253.8693,"elapsed_within_degrees":0.536},"yoga":{"number":26,"name":"Indra","sum_longitude":336.3087},"karana":{"half_tithi_index":28,"name":"Viṣṭi"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.892,"elongation":171.43},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.892,"opposition_distance":8.57}},"eclipse_window_40days":[]},"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":"05:25","sunsetLocal":"19:41","solarNoonLocal":"12:33","dayLengthHours":14.256508461410625,"dayLengthDisplay":"14 Hours 15 Mins 23 Secs","nightLengthDisplay":"9 Hours 44 Mins 37 Secs","moonriseLocal":"19:04","moonsetLocal":"05:00","rahuKala":{"name":"Rāhu Kāla","start":"14:20","end":"16:07","startHours":14.334138234804072,"endHours":16.116201792480403,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"05:25","end":"07:12","startHours":5.423820446422433,"endHours":7.2058840040987615,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:59","end":"10:46","startHours":8.98794756177509,"endHours":10.770011119451418,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:45","end":"09:14","startHours":8.750339087418245,"endHours":9.225556036131934,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:01","end":"06:24","startHours":6.017841632314543,"endHours":6.398015191285493,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:05","end":"13:02","startHours":12.076857728414058,"endHours":13.027291625841432,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:31","end":"04:28","startHours":3.5229526515676834,"endHours":4.473386548995058,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:14","end":"05:25","startHours":4.2357780746382145,"endHours":5.423820446422433,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:56","end":"15:53","startHours":14.928159420696183,"endHours":15.878593318123558,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:29","end":"19:53","startHours":19.48032890783306,"endHours":19.880328907833057,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:41","end":"20:16","startHours":19.680328907833058,"endHours":20.274350093725168,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:26","end":"21:11","startHours":19.430328907833058,"endHours":21.180328907833058,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:05","end":"01:02","startHours":24.07685772841406,"endHours":25.027291625841432,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"05:25","end":"07:12","startHours":5.423820446422433,"endHours":7.2058840040987615,"quality":"auspicious"},{"name":"Roga","start":"07:12","end":"08:59","startHours":7.2058840040987615,"endHours":8.98794756177509,"quality":"inauspicious"},{"name":"Udveg","start":"08:59","end":"10:46","startHours":8.98794756177509,"endHours":10.770011119451418,"quality":"inauspicious"},{"name":"Chala","start":"10:46","end":"12:33","startHours":10.770011119451418,"endHours":12.552074677127745,"quality":"neutral"},{"name":"Labha","start":"12:33","end":"14:20","startHours":12.552074677127745,"endHours":14.334138234804072,"quality":"auspicious"},{"name":"Amṛta","start":"14:20","end":"16:07","startHours":14.334138234804072,"endHours":16.116201792480403,"quality":"auspicious"},{"name":"Kāla","start":"16:07","end":"17:54","startHours":16.116201792480403,"endHours":17.89826535015673,"quality":"inauspicious"},{"name":"Śubha","start":"17:54","end":"19:41","startHours":17.89826535015673,"endHours":19.680328907833058,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"19:41","end":"20:54","startHours":19.680328907833058,"endHours":20.89826535015673,"quality":"auspicious"},{"name":"Kāla","start":"20:54","end":"22:07","startHours":20.89826535015673,"endHours":22.116201792480403,"quality":"inauspicious"},{"name":"Śubha","start":"22:07","end":"23:20","startHours":22.116201792480403,"endHours":23.334138234804072,"quality":"auspicious"},{"name":"Roga","start":"23:20","end":"00:33","startHours":23.334138234804072,"endHours":24.552074677127745,"quality":"inauspicious"},{"name":"Udveg","start":"00:33","end":"01:46","startHours":24.552074677127745,"endHours":25.770011119451418,"quality":"inauspicious"},{"name":"Chala","start":"01:46","end":"02:59","startHours":25.770011119451418,"endHours":26.987947561775087,"quality":"neutral"},{"name":"Labha","start":"02:59","end":"04:12","startHours":26.987947561775087,"endHours":28.20588400409876,"quality":"auspicious"},{"name":"Amṛta","start":"04:12","end":"05:25","startHours":28.20588400409876,"endHours":29.423820446422432,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:25","end":"06:25","startHours":5.423820446422433,"endHours":6.423820446422433,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"06:25","end":"07:25","startHours":6.423820446422433,"endHours":7.423820446422433,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"07:25","end":"08:25","startHours":7.423820446422433,"endHours":8.423820446422432,"planetary_lord":"Moon"},{"name":"Hora 4","start":"08:25","end":"09:25","startHours":8.423820446422432,"endHours":9.423820446422432,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"09:25","end":"10:25","startHours":9.423820446422432,"endHours":10.423820446422432,"planetary_lord":"Venus"},{"name":"Hora 6","start":"10:25","end":"11:25","startHours":10.423820446422432,"endHours":11.423820446422432,"planetary_lord":"Sun"},{"name":"Hora 7","start":"11:25","end":"12:25","startHours":11.423820446422432,"endHours":12.423820446422432,"planetary_lord":"Mars"},{"name":"Hora 8","start":"12:25","end":"13:25","startHours":12.423820446422432,"endHours":13.423820446422432,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"13:25","end":"14:25","startHours":13.423820446422432,"endHours":14.423820446422432,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"14:25","end":"15:25","startHours":14.423820446422432,"endHours":15.423820446422432,"planetary_lord":"Moon"},{"name":"Hora 11","start":"15:25","end":"16:25","startHours":15.423820446422432,"endHours":16.423820446422432,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"16:25","end":"17:25","startHours":16.423820446422432,"endHours":17.423820446422432,"planetary_lord":"Venus"},{"name":"Hora 13","start":"17:25","end":"18:25","startHours":17.423820446422432,"endHours":18.423820446422432,"planetary_lord":"Sun"},{"name":"Hora 14","start":"18:25","end":"19:25","startHours":18.423820446422432,"endHours":19.423820446422432,"planetary_lord":"Mars"},{"name":"Hora 15","start":"19:25","end":"20:25","startHours":19.423820446422432,"endHours":20.423820446422432,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"20:25","end":"21:25","startHours":20.423820446422432,"endHours":21.423820446422432,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"21:25","end":"22:25","startHours":21.423820446422432,"endHours":22.423820446422432,"planetary_lord":"Moon"},{"name":"Hora 18","start":"22:25","end":"23:25","startHours":22.423820446422432,"endHours":23.423820446422432,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"23:25","end":"00:25","startHours":23.423820446422432,"endHours":24.423820446422432,"planetary_lord":"Venus"},{"name":"Hora 20","start":"00:25","end":"01:25","startHours":24.423820446422432,"endHours":25.423820446422432,"planetary_lord":"Sun"},{"name":"Hora 21","start":"01:25","end":"02:25","startHours":25.423820446422432,"endHours":26.423820446422432,"planetary_lord":"Mars"},{"name":"Hora 22","start":"02:25","end":"03:25","startHours":26.423820446422432,"endHours":27.423820446422432,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"03:25","end":"04:25","startHours":27.423820446422432,"endHours":28.423820446422432,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"04:25","end":"05:25","startHours":28.423820446422432,"endHours":29.423820446422432,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Uttara Phalgunī","Hasta","Citrā","Svātī","Viśākhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Dhanu","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Makara","Mīna"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"East","rahuVasa":"North-West","anandadiYoga":{"name":"Śrīvatsa","quality":"Auspicious"},"tropicalRitu":"Grīṣma (Summer) (tropical)","vedicRitu":"Grīṣma (Summer)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":22.398388985182194,"eotMinutes":-4.828480627664775,"ayanamsa":23.8323}},"calendars":{"vikram_samvat":2055,"vikram_samvatsara":"Khara","saka_samvat":1920,"saka_samvatsara":"Bahudhānya","bengali_samvat":1405,"malayalam_era":1174,"nanakshahi_year":529,"lunar_month":"Āṣāḍha","lunar_month_paksha_full":"Āṣāḍha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Āṣāḍha","lunar_month_amanta":"Āṣāḍha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mithuna (Āni)","ritu":"Grīṣma (Summer)","display_summary":"Āṣāḍha Śukla Pūrṇimā · Vikram 2055 Khara · Śaka 1920 Bahudhānya"},"festivals":[{"id":"guru-purnima","name":"Guru Pūrṇimā / Vyāsa Pūrṇimā","name_sanskrit":"गुरु पूर्णिमा / व्यास पूर्णिमा","tradition":"Pan-Hindu","associated_deity":"Vyāsa-jī","significance":"Honor Vyāsa-jī and all gurus.","vrata":false,"detection":{"tithi_number":15,"tithi_paksha":"Śukla","lunar_month":"Āṣāḍha"},"precedence":1},{"id":"vyasa-purnima","name":"Vyāsa Pūrṇimā (= Guru Pūrṇimā)","name_sanskrit":"व्यास पूर्णिमा","tradition":"Pan-Hindu","associated_deity":"Veda-Vyāsa","significance":"Birth of Veda-Vyāsa; Mahābhārata-Purāṇa-vibhāga-kartā. = Guru Pūrṇimā.","vrata":true,"detection":{"tithi_number":15,"tithi_paksha":"Śukla","lunar_month":"Āṣāḍha"},"precedence":1,"related_chart":"vyasa"}],"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 Śukla Pūrṇimā","url":"/day/-3137-10-04","relevance":0.5},{"historical_date":"-0562-04-11","event":"Bhagavān Buddha's birth at Lumbinī","chart_id":"buddha","shared_marker":"same Śukla Pūrṇimā","url":"/day/-0562-04-11","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 July 9, 1998 CE · Phoenix, USA · Vidhyamitra","description":"July 9, 1998 CE for Phoenix, USA: Śukla Pūrṇimā, sūryodaya 05:25, sūryāsta 19:41.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/phoenix/1998-07-09","hreflang_alternates":{"en":"https://vidhyamitra.com/city/phoenix/1998-07-09","sa":"https://sa.vidhyamitra.com/city/phoenix/1998-07-09","hi":"https://hi.vidhyamitra.com/city/phoenix/1998-07-09","x-default":"https://vidhyamitra.com/city/phoenix/1998-07-09"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T19:38:19.484Z","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":"2026-06-01T19:38:19.484Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T19:38:19.484Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}