{"id":"vidhyamitra:city-day:phoenix:1978-12-16:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/phoenix/1978-12-16","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1978-12-16","date_display":"December 16, 1978 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":1978,"month":12,"day":16,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2443858.770833,"kali_year":5080,"ahargana":1855393.2708,"sun":{"sidereal_longitude":239.8335,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":79.2363,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":17,"name":"Dvitīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvitīyā","elongation_degrees":199.4028,"elapsed_within_tithi_degrees":7.4028},"nakshatra":{"number":6,"name":"Ārdrā","pada":4,"moon_longitude":79.2363,"elapsed_within_degrees":12.5696},"yoga":{"number":24,"name":"Śukla","sum_longitude":319.0698},"karana":{"half_tithi_index":33,"name":"Gara"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"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":1978,"month":12,"day":16,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2443858.770833,"ahargana":1855393.2708,"kali_year":5080,"ayanamsa_lahiri":23.559,"grahas":{"sun":{"sidereal_longitude":240.16078100000004,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":false},"moon":{"sidereal_longitude":77.174981,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":4},"retrograde":false,"latitude":-4.3053},"mars":{"sidereal_longitude":249.23058100000003,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":221.99148100000002,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":104.51678100000004,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":4},"retrograde":true},"venus":{"sidereal_longitude":199.46278099999995,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":140.18278099999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":152.3357,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":332.3357,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4},"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":1978,"month":12,"day":16,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2443858.770833,"kali_year":5080,"ahargana":1855393.2708,"sun":{"sidereal_longitude":239.8335,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":79.2363,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":17,"name":"Dvitīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvitīyā","elongation_degrees":199.4028,"elapsed_within_tithi_degrees":7.4028},"nakshatra":{"number":6,"name":"Ārdrā","pada":4,"moon_longitude":79.2363,"elapsed_within_degrees":12.5696},"yoga":{"number":24,"name":"Śukla","sum_longitude":319.0698},"karana":{"half_tithi_index":33,"name":"Gara"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.305,"elongation":160.597},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.305,"opposition_distance":19.403}},"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":"07:26","sunsetLocal":"17:23","solarNoonLocal":"12:25","dayLengthHours":9.948252725673932,"dayLengthDisplay":"9 Hours 56 Mins 54 Secs","nightLengthDisplay":"14 Hours 03 Mins 06 Secs","moonriseLocal":"18:24","moonsetLocal":"08:41","rahuKala":{"name":"Rāhu Kāla","start":"09:55","end":"11:10","startHours":9.92258820479531,"endHours":11.166119795504551,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:39","end":"14:54","startHours":13.653182976923034,"endHours":14.896714567632277,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:26","end":"08:41","startHours":7.435525023376827,"endHours":8.679056614086068,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:45","end":"10:05","startHours":9.756783992700743,"endHours":10.088392416889874,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:51","end":"08:07","startHours":7.850035553613241,"endHours":8.115322292964546,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:05","end":"12:44","startHours":12.07804296202466,"endHours":12.741259810402923,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"06:07","end":"06:46","startHours":6.109091326620303,"endHours":6.772308174998565,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:36","end":"07:26","startHours":6.606503962903999,"endHours":7.435525023376827,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:04","end":"14:44","startHours":14.067693507159447,"endHours":14.73091035553771,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:11","end":"17:35","startHours":17.18377774905076,"endHours":17.583777749050757,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:23","end":"17:48","startHours":17.383777749050758,"endHours":17.79828827928717,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:08","end":"18:53","startHours":17.133777749050758,"endHours":18.883777749050758,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:05","end":"00:44","startHours":24.07804296202466,"endHours":24.741259810402923,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"07:26","end":"08:41","startHours":7.435525023376827,"endHours":8.679056614086068,"quality":"inauspicious"},{"name":"Śubha","start":"08:41","end":"09:55","startHours":8.679056614086068,"endHours":9.92258820479531,"quality":"auspicious"},{"name":"Roga","start":"09:55","end":"11:10","startHours":9.92258820479531,"endHours":11.166119795504551,"quality":"inauspicious"},{"name":"Udveg","start":"11:10","end":"12:25","startHours":11.166119795504551,"endHours":12.409651386213792,"quality":"inauspicious"},{"name":"Chala","start":"12:25","end":"13:39","startHours":12.409651386213792,"endHours":13.653182976923034,"quality":"neutral"},{"name":"Labha","start":"13:39","end":"14:54","startHours":13.653182976923034,"endHours":14.896714567632277,"quality":"auspicious"},{"name":"Amṛta","start":"14:54","end":"16:08","startHours":14.896714567632277,"endHours":16.140246158341515,"quality":"auspicious"},{"name":"Kāla","start":"16:08","end":"17:23","startHours":16.140246158341515,"endHours":17.383777749050758,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"17:23","end":"19:08","startHours":17.383777749050758,"endHours":19.140246158341515,"quality":"auspicious"},{"name":"Amṛta","start":"19:08","end":"20:54","startHours":19.140246158341515,"endHours":20.896714567632273,"quality":"auspicious"},{"name":"Kāla","start":"20:54","end":"22:39","startHours":20.896714567632273,"endHours":22.653182976923034,"quality":"inauspicious"},{"name":"Śubha","start":"22:39","end":"00:25","startHours":22.653182976923034,"endHours":24.409651386213792,"quality":"auspicious"},{"name":"Roga","start":"00:25","end":"02:10","startHours":24.409651386213792,"endHours":26.16611979550455,"quality":"inauspicious"},{"name":"Udveg","start":"02:10","end":"03:55","startHours":26.16611979550455,"endHours":27.92258820479531,"quality":"inauspicious"},{"name":"Chala","start":"03:55","end":"05:41","startHours":27.92258820479531,"endHours":29.67905661408607,"quality":"neutral"},{"name":"Labha","start":"05:41","end":"07:26","startHours":29.67905661408607,"endHours":31.435525023376826,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:26","end":"08:26","startHours":7.435525023376827,"endHours":8.435525023376826,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"08:26","end":"09:26","startHours":8.435525023376826,"endHours":9.435525023376826,"planetary_lord":"Moon"},{"name":"Hora 3","start":"09:26","end":"10:26","startHours":9.435525023376826,"endHours":10.435525023376826,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"10:26","end":"11:26","startHours":10.435525023376826,"endHours":11.435525023376826,"planetary_lord":"Venus"},{"name":"Hora 5","start":"11:26","end":"12:26","startHours":11.435525023376826,"endHours":12.435525023376826,"planetary_lord":"Sun"},{"name":"Hora 6","start":"12:26","end":"13:26","startHours":12.435525023376826,"endHours":13.435525023376826,"planetary_lord":"Mars"},{"name":"Hora 7","start":"13:26","end":"14:26","startHours":13.435525023376826,"endHours":14.435525023376826,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"14:26","end":"15:26","startHours":14.435525023376826,"endHours":15.435525023376826,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"15:26","end":"16:26","startHours":15.435525023376826,"endHours":16.435525023376826,"planetary_lord":"Moon"},{"name":"Hora 10","start":"16:26","end":"17:26","startHours":16.435525023376826,"endHours":17.435525023376826,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"17:26","end":"18:26","startHours":17.435525023376826,"endHours":18.435525023376826,"planetary_lord":"Venus"},{"name":"Hora 12","start":"18:26","end":"19:26","startHours":18.435525023376826,"endHours":19.435525023376826,"planetary_lord":"Sun"},{"name":"Hora 13","start":"19:26","end":"20:26","startHours":19.435525023376826,"endHours":20.435525023376826,"planetary_lord":"Mars"},{"name":"Hora 14","start":"20:26","end":"21:26","startHours":20.435525023376826,"endHours":21.435525023376826,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"21:26","end":"22:26","startHours":21.435525023376826,"endHours":22.435525023376826,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"22:26","end":"23:26","startHours":22.435525023376826,"endHours":23.435525023376826,"planetary_lord":"Moon"},{"name":"Hora 17","start":"23:26","end":"00:26","startHours":23.435525023376826,"endHours":24.435525023376826,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"00:26","end":"01:26","startHours":24.435525023376826,"endHours":25.435525023376826,"planetary_lord":"Venus"},{"name":"Hora 19","start":"01:26","end":"02:26","startHours":25.435525023376826,"endHours":26.435525023376826,"planetary_lord":"Sun"},{"name":"Hora 20","start":"02:26","end":"03:26","startHours":26.435525023376826,"endHours":27.435525023376826,"planetary_lord":"Mars"},{"name":"Hora 21","start":"03:26","end":"04:26","startHours":27.435525023376826,"endHours":28.435525023376826,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"04:26","end":"05:26","startHours":28.435525023376826,"endHours":29.435525023376826,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"05:26","end":"06:26","startHours":29.435525023376826,"endHours":30.435525023376826,"planetary_lord":"Moon"},{"name":"Hora 24","start":"06:26","end":"07:26","startHours":30.435525023376826,"endHours":31.435525023376826,"planetary_lord":"Mercury"}],"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":"East (Pūrva)","chandraVasa":"South","rahuVasa":"East","anandadiYoga":{"name":"Kāladaṇḍa","quality":"Inauspicious"},"tropicalRitu":"Hemanta (Pre-winter)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-23.287528846010087,"eotMinutes":3.716916827172506,"ayanamsa":23.559}},"calendars":{"vikram_samvat":2035,"vikram_samvatsara":"Prajāpati","saka_samvat":1900,"saka_samvatsara":"Kālayukta","bengali_samvat":1385,"malayalam_era":1154,"nanakshahi_year":509,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Pauṣa","lunar_month_amanta":"Mārgaśīrṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Kṛṣṇa Dvitīyā · Vikram 2035 Prajāpati · Śaka 1900 Kālayukta"},"festivals":[{"id":"dhanu-sankranti","name":"Dhanu Saṅkrānti","name_sanskrit":"धनु सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Sagittarius; Dhanu-māsa (Khara-māsa).","vrata":false,"detection":{"sun_rashi_ingress":"Dhanu"},"precedence":5}],"todays_walk":{"walk":{"id":"shani-walk","name":"Śani Walk","name_sanskrit":"शनि यात्रा","type":"graha","description":"Tapas + endurance + BG 17.14-19.","step_count":7,"url":"/walk/shani-walk"},"reason":"Śanivāra (Saturday) — its presiding graha's walk."},"cosmic_resonances":[]},"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 December 16, 1978 CE · Phoenix, USA · Vidhyamitra","description":"December 16, 1978 CE for Phoenix, USA: Kṛṣṇa Dvitīyā, sūryodaya 07:26, sūryāsta 17:23.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/phoenix/1978-12-16","hreflang_alternates":{"en":"https://vidhyamitra.com/city/phoenix/1978-12-16","sa":"https://sa.vidhyamitra.com/city/phoenix/1978-12-16","hi":"https://hi.vidhyamitra.com/city/phoenix/1978-12-16","x-default":"https://vidhyamitra.com/city/phoenix/1978-12-16"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T00:34:14.771Z","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":"2026-06-02T00:34:14.771Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T00:34:14.771Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}