{"id":"vidhyamitra:city-day:phoenix:1978-12-17:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/phoenix/1978-12-17","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1978-12-17","date_display":"December 17, 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":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2443859.770833,"kali_year":5080,"ahargana":1855394.2708,"sun":{"sidereal_longitude":240.8598,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":91.7169,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":18,"name":"Tṛtīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Tṛtīyā","elongation_degrees":210.8571,"elapsed_within_tithi_degrees":6.8571},"nakshatra":{"number":7,"name":"Punarvasu","pada":4,"moon_longitude":91.7169,"elapsed_within_degrees":11.7169},"yoga":{"number":25,"name":"Brahma","sum_longitude":332.5767},"karana":{"half_tithi_index":35,"name":"Viṣṭi"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"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":17,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2443859.770833,"ahargana":1855394.2708,"kali_year":5080,"ayanamsa_lahiri":23.5591,"grahas":{"sun":{"sidereal_longitude":241.17824300000007,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":false},"moon":{"sidereal_longitude":89.20604300000002,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":3},"retrograde":false,"latitude":-3.9182},"mars":{"sidereal_longitude":249.9897430000001,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":222.127343,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":104.44964300000004,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":4},"retrograde":true},"venus":{"sidereal_longitude":200.044443,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":140.19874300000004,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":152.2827,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":332.2827,"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":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2443859.770833,"kali_year":5080,"ahargana":1855394.2708,"sun":{"sidereal_longitude":240.8598,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":91.7169,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":18,"name":"Tṛtīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Tṛtīyā","elongation_degrees":210.8571,"elapsed_within_tithi_degrees":6.8571},"nakshatra":{"number":7,"name":"Punarvasu","pada":4,"moon_longitude":91.7169,"elapsed_within_degrees":11.7169},"yoga":{"number":25,"name":"Brahma","sum_longitude":332.5767},"karana":{"half_tithi_index":35,"name":"Viṣṭi"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.918,"elongation":149.143},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.918,"opposition_distance":30.857}},"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":"07:27","sunsetLocal":"17:23","solarNoonLocal":"12:25","dayLengthHours":9.943502505403764,"dayLengthDisplay":"9 Hours 56 Mins 37 Secs","nightLengthDisplay":"14 Hours 03 Mins 23 Secs","moonriseLocal":"19:14","moonsetLocal":"09:21","rahuKala":{"name":"Rāhu Kāla","start":"16:09","end":"17:23","startHours":16.146190624907938,"endHours":17.389128438083407,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:25","end":"13:40","startHours":12.417377185381525,"endHours":13.660314998556995,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"14:54","end":"16:09","startHours":14.903252811732465,"endHours":16.146190624907938,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:46","end":"10:06","startHours":9.765776517273855,"endHours":10.097226600787312,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:52","end":"08:08","startHours":7.859938537071466,"endHours":8.125098603882233,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:05","end":"12:45","startHours":12.085927101868066,"endHours":12.748827268894985,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"06:07","end":"06:47","startHours":6.119825598625807,"endHours":6.782725765652725,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:37","end":"07:27","startHours":6.617000723895996,"endHours":7.445625932679643,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:04","end":"14:44","startHours":14.07462760294882,"endHours":14.737527769975737,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:11","end":"17:35","startHours":17.189128438083408,"endHours":17.589128438083407,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:23","end":"17:48","startHours":17.389128438083407,"endHours":17.80344104247523,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:08","end":"18:53","startHours":17.139128438083407,"endHours":18.889128438083407,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:05","end":"00:45","startHours":24.085927101868066,"endHours":24.748827268894985,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"07:27","end":"08:41","startHours":7.445625932679643,"endHours":8.688563745855113,"quality":"inauspicious"},{"name":"Chala","start":"08:41","end":"09:56","startHours":8.688563745855113,"endHours":9.931501559030583,"quality":"neutral"},{"name":"Labha","start":"09:56","end":"11:10","startHours":9.931501559030583,"endHours":11.174439372206054,"quality":"auspicious"},{"name":"Amṛta","start":"11:10","end":"12:25","startHours":11.174439372206054,"endHours":12.417377185381525,"quality":"auspicious"},{"name":"Kāla","start":"12:25","end":"13:40","startHours":12.417377185381525,"endHours":13.660314998556995,"quality":"inauspicious"},{"name":"Śubha","start":"13:40","end":"14:54","startHours":13.660314998556995,"endHours":14.903252811732465,"quality":"auspicious"},{"name":"Roga","start":"14:54","end":"16:09","startHours":14.903252811732465,"endHours":16.146190624907938,"quality":"inauspicious"},{"name":"Udveg","start":"16:09","end":"17:23","startHours":16.146190624907938,"endHours":17.389128438083407,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"17:23","end":"19:09","startHours":17.389128438083407,"endHours":19.146190624907938,"quality":"auspicious"},{"name":"Roga","start":"19:09","end":"20:54","startHours":19.146190624907938,"endHours":20.903252811732465,"quality":"inauspicious"},{"name":"Udveg","start":"20:54","end":"22:40","startHours":20.903252811732465,"endHours":22.660314998556995,"quality":"inauspicious"},{"name":"Chala","start":"22:40","end":"00:25","startHours":22.660314998556995,"endHours":24.417377185381525,"quality":"neutral"},{"name":"Labha","start":"00:25","end":"02:10","startHours":24.417377185381525,"endHours":26.174439372206056,"quality":"auspicious"},{"name":"Amṛta","start":"02:10","end":"03:56","startHours":26.174439372206056,"endHours":27.931501559030586,"quality":"auspicious"},{"name":"Kāla","start":"03:56","end":"05:41","startHours":27.931501559030586,"endHours":29.688563745855113,"quality":"inauspicious"},{"name":"Śubha","start":"05:41","end":"07:27","startHours":29.688563745855113,"endHours":31.445625932679643,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:27","end":"08:27","startHours":7.445625932679643,"endHours":8.445625932679643,"planetary_lord":"Sun"},{"name":"Hora 2","start":"08:27","end":"09:27","startHours":8.445625932679643,"endHours":9.445625932679643,"planetary_lord":"Mars"},{"name":"Hora 3","start":"09:27","end":"10:27","startHours":9.445625932679643,"endHours":10.445625932679643,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"10:27","end":"11:27","startHours":10.445625932679643,"endHours":11.445625932679643,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"11:27","end":"12:27","startHours":11.445625932679643,"endHours":12.445625932679643,"planetary_lord":"Moon"},{"name":"Hora 6","start":"12:27","end":"13:27","startHours":12.445625932679643,"endHours":13.445625932679643,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"13:27","end":"14:27","startHours":13.445625932679643,"endHours":14.445625932679643,"planetary_lord":"Venus"},{"name":"Hora 8","start":"14:27","end":"15:27","startHours":14.445625932679643,"endHours":15.445625932679643,"planetary_lord":"Sun"},{"name":"Hora 9","start":"15:27","end":"16:27","startHours":15.445625932679643,"endHours":16.445625932679643,"planetary_lord":"Mars"},{"name":"Hora 10","start":"16:27","end":"17:27","startHours":16.445625932679643,"endHours":17.445625932679643,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"17:27","end":"18:27","startHours":17.445625932679643,"endHours":18.445625932679643,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"18:27","end":"19:27","startHours":18.445625932679643,"endHours":19.445625932679643,"planetary_lord":"Moon"},{"name":"Hora 13","start":"19:27","end":"20:27","startHours":19.445625932679643,"endHours":20.445625932679643,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"20:27","end":"21:27","startHours":20.445625932679643,"endHours":21.445625932679643,"planetary_lord":"Venus"},{"name":"Hora 15","start":"21:27","end":"22:27","startHours":21.445625932679643,"endHours":22.445625932679643,"planetary_lord":"Sun"},{"name":"Hora 16","start":"22:27","end":"23:27","startHours":22.445625932679643,"endHours":23.445625932679643,"planetary_lord":"Mars"},{"name":"Hora 17","start":"23:27","end":"00:27","startHours":23.445625932679643,"endHours":24.445625932679643,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"00:27","end":"01:27","startHours":24.445625932679643,"endHours":25.445625932679643,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"01:27","end":"02:27","startHours":25.445625932679643,"endHours":26.445625932679643,"planetary_lord":"Moon"},{"name":"Hora 20","start":"02:27","end":"03:27","startHours":26.445625932679643,"endHours":27.445625932679643,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"03:27","end":"04:27","startHours":27.445625932679643,"endHours":28.445625932679643,"planetary_lord":"Venus"},{"name":"Hora 22","start":"04:27","end":"05:27","startHours":28.445625932679643,"endHours":29.445625932679643,"planetary_lord":"Sun"},{"name":"Hora 23","start":"05:27","end":"06:27","startHours":29.445625932679643,"endHours":30.445625932679643,"planetary_lord":"Mars"},{"name":"Hora 24","start":"06:27","end":"07:27","startHours":30.445625932679643,"endHours":31.445625932679643,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Hasta","Citrā","Svātī","Viśākhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"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":"West (Paścim)","chandraVasa":"South","rahuVasa":"North-East","anandadiYoga":{"name":"Dhvaja","quality":"Auspicious"},"tropicalRitu":"Hemanta (Pre-winter)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-23.331843846217446,"eotMinutes":3.253368877108411,"ayanamsa":23.5591}},"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 Tṛtīyā · Vikram 2035 Prajāpati · Śaka 1900 Kālayukta"},"festivals":[],"todays_walk":{"walk":{"id":"surya-walk","name":"Sūrya Walk","name_sanskrit":"सूर्य यात्रा","type":"graha","description":"Self-illumination + BG 4.1 (Sun-lineage of Gītā transmission).","step_count":6,"url":"/walk/surya-walk"},"reason":"Ravivāra (Sunday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-1626101-04-03","event":"Bhagavān Rāma's birth at Ayodhyā","chart_id":"rama","shared_marker":"same Punarvasu","url":"/day/-1626101-04-03","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 December 17, 1978 CE · Phoenix, USA · Vidhyamitra","description":"December 17, 1978 CE for Phoenix, USA: Kṛṣṇa Tṛtīyā, sūryodaya 07:27, sūryāsta 17:23.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/phoenix/1978-12-17","hreflang_alternates":{"en":"https://vidhyamitra.com/city/phoenix/1978-12-17","sa":"https://sa.vidhyamitra.com/city/phoenix/1978-12-17","hi":"https://hi.vidhyamitra.com/city/phoenix/1978-12-17","x-default":"https://vidhyamitra.com/city/phoenix/1978-12-17"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T09:05:31.515Z","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":"2026-06-02T09:05:31.515Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T09:05:31.515Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}