{"id":"vidhyamitra:city-day:phoenix:1979-01-20:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/phoenix/1979-01-20","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1979-01-20","date_display":"January 20, 1979 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":1979,"month":1,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2443893.770833,"kali_year":5080,"ahargana":1855428.2708,"sun":{"sidereal_longitude":275.7926,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":173.302,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":22,"name":"Saptamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Saptamī","elongation_degrees":257.5094,"elapsed_within_tithi_degrees":5.5094},"nakshatra":{"number":13,"name":"Hasta","pada":4,"moon_longitude":173.302,"elapsed_within_degrees":13.302},"yoga":{"number":7,"name":"Sukarma","sum_longitude":89.0946},"karana":{"half_tithi_index":42,"name":"Viṣṭi"},"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":1979,"month":1,"day":20,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2443893.770833,"ahargana":1855428.2708,"kali_year":5080,"ayanamsa_lahiri":23.5604,"grahas":{"sun":{"sidereal_longitude":275.81584399999997,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":169.30704400000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false,"latitude":1.7438},"mars":{"sidereal_longitude":276.205744,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":263.31364400000007,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":100.773144,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":true},"venus":{"sidereal_longitude":229.17284399999994,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":139.65344399999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":150.4813,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":330.4813,"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":1979,"month":1,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2443893.770833,"kali_year":5080,"ahargana":1855428.2708,"sun":{"sidereal_longitude":275.7926,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":173.302,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":22,"name":"Saptamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Saptamī","elongation_degrees":257.5094,"elapsed_within_tithi_degrees":5.5094},"nakshatra":{"number":13,"name":"Hasta","pada":4,"moon_longitude":173.302,"elapsed_within_degrees":13.302},"yoga":{"number":7,"name":"Sukarma","sum_longitude":89.0946},"karana":{"half_tithi_index":42,"name":"Viṣṭi"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":1.744,"elongation":102.491},"lunar":{"type":"lunar","occurs":false,"moon_latitude":1.744,"opposition_distance":77.509}},"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":"07:31","sunsetLocal":"17:47","solarNoonLocal":"12:39","dayLengthHours":10.262291620527824,"dayLengthDisplay":"10 Hours 15 Mins 44 Secs","nightLengthDisplay":"13 Hours 44 Mins 16 Secs","moonriseLocal":"23:44","moonsetLocal":"11:23","rahuKala":{"name":"Rāhu Kāla","start":"10:05","end":"11:22","startHours":10.088765483821867,"endHours":11.371551936387844,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:56","end":"15:13","startHours":13.9371248415198,"endHours":15.219911294085778,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:31","end":"08:48","startHours":7.52319257868991,"endHours":8.805979031255887,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:55","end":"10:16","startHours":9.917727290146402,"endHours":10.259803677497331,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:57","end":"08:13","startHours":7.950788062878569,"endHours":8.22444917275931,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:19","end":"13:00","startHours":12.312262001602894,"endHours":12.996414776304748,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"06:09","end":"06:50","startHours":6.154887029286201,"endHours":6.839039803988055,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:40","end":"07:31","startHours":6.668001610312592,"endHours":7.52319257868991,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:22","end":"15:03","startHours":14.36472032570846,"endHours":15.048873100410315,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:35","end":"17:59","startHours":17.585484199217735,"endHours":17.985484199217733,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:47","end":"18:13","startHours":17.785484199217734,"endHours":18.213079683406395,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:32","end":"19:17","startHours":17.535484199217734,"endHours":19.285484199217734,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:19","end":"01:00","startHours":24.312262001602893,"endHours":24.99641477630475,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"07:31","end":"08:48","startHours":7.52319257868991,"endHours":8.805979031255887,"quality":"inauspicious"},{"name":"Śubha","start":"08:48","end":"10:05","startHours":8.805979031255887,"endHours":10.088765483821867,"quality":"auspicious"},{"name":"Roga","start":"10:05","end":"11:22","startHours":10.088765483821867,"endHours":11.371551936387844,"quality":"inauspicious"},{"name":"Udveg","start":"11:22","end":"12:39","startHours":11.371551936387844,"endHours":12.654338388953821,"quality":"inauspicious"},{"name":"Chala","start":"12:39","end":"13:56","startHours":12.654338388953821,"endHours":13.9371248415198,"quality":"neutral"},{"name":"Labha","start":"13:56","end":"15:13","startHours":13.9371248415198,"endHours":15.219911294085778,"quality":"auspicious"},{"name":"Amṛta","start":"15:13","end":"16:30","startHours":15.219911294085778,"endHours":16.502697746651755,"quality":"auspicious"},{"name":"Kāla","start":"16:30","end":"17:47","startHours":16.502697746651755,"endHours":17.785484199217734,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"17:47","end":"19:30","startHours":17.785484199217734,"endHours":19.502697746651755,"quality":"auspicious"},{"name":"Amṛta","start":"19:30","end":"21:13","startHours":19.502697746651755,"endHours":21.21991129408578,"quality":"auspicious"},{"name":"Kāla","start":"21:13","end":"22:56","startHours":21.21991129408578,"endHours":22.9371248415198,"quality":"inauspicious"},{"name":"Śubha","start":"22:56","end":"00:39","startHours":22.9371248415198,"endHours":24.65433838895382,"quality":"auspicious"},{"name":"Roga","start":"00:39","end":"02:22","startHours":24.65433838895382,"endHours":26.371551936387846,"quality":"inauspicious"},{"name":"Udveg","start":"02:22","end":"04:05","startHours":26.371551936387846,"endHours":28.088765483821867,"quality":"inauspicious"},{"name":"Chala","start":"04:05","end":"05:48","startHours":28.088765483821867,"endHours":29.805979031255887,"quality":"neutral"},{"name":"Labha","start":"05:48","end":"07:31","startHours":29.805979031255887,"endHours":31.52319257868991,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:31","end":"08:31","startHours":7.52319257868991,"endHours":8.52319257868991,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"08:31","end":"09:31","startHours":8.52319257868991,"endHours":9.52319257868991,"planetary_lord":"Moon"},{"name":"Hora 3","start":"09:31","end":"10:31","startHours":9.52319257868991,"endHours":10.52319257868991,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"10:31","end":"11:31","startHours":10.52319257868991,"endHours":11.52319257868991,"planetary_lord":"Venus"},{"name":"Hora 5","start":"11:31","end":"12:31","startHours":11.52319257868991,"endHours":12.52319257868991,"planetary_lord":"Sun"},{"name":"Hora 6","start":"12:31","end":"13:31","startHours":12.52319257868991,"endHours":13.52319257868991,"planetary_lord":"Mars"},{"name":"Hora 7","start":"13:31","end":"14:31","startHours":13.52319257868991,"endHours":14.52319257868991,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"14:31","end":"15:31","startHours":14.52319257868991,"endHours":15.52319257868991,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"15:31","end":"16:31","startHours":15.52319257868991,"endHours":16.52319257868991,"planetary_lord":"Moon"},{"name":"Hora 10","start":"16:31","end":"17:31","startHours":16.52319257868991,"endHours":17.52319257868991,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"17:31","end":"18:31","startHours":17.52319257868991,"endHours":18.52319257868991,"planetary_lord":"Venus"},{"name":"Hora 12","start":"18:31","end":"19:31","startHours":18.52319257868991,"endHours":19.52319257868991,"planetary_lord":"Sun"},{"name":"Hora 13","start":"19:31","end":"20:31","startHours":19.52319257868991,"endHours":20.52319257868991,"planetary_lord":"Mars"},{"name":"Hora 14","start":"20:31","end":"21:31","startHours":20.52319257868991,"endHours":21.52319257868991,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"21:31","end":"22:31","startHours":21.52319257868991,"endHours":22.52319257868991,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"22:31","end":"23:31","startHours":22.52319257868991,"endHours":23.52319257868991,"planetary_lord":"Moon"},{"name":"Hora 17","start":"23:31","end":"00:31","startHours":23.52319257868991,"endHours":24.52319257868991,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"00:31","end":"01:31","startHours":24.52319257868991,"endHours":25.52319257868991,"planetary_lord":"Venus"},{"name":"Hora 19","start":"01:31","end":"02:31","startHours":25.52319257868991,"endHours":26.52319257868991,"planetary_lord":"Sun"},{"name":"Hora 20","start":"02:31","end":"03:31","startHours":26.52319257868991,"endHours":27.52319257868991,"planetary_lord":"Mars"},{"name":"Hora 21","start":"03:31","end":"04:31","startHours":27.52319257868991,"endHours":28.52319257868991,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"04:31","end":"05:31","startHours":28.52319257868991,"endHours":29.52319257868991,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"05:31","end":"06:31","startHours":29.52319257868991,"endHours":30.52319257868991,"planetary_lord":"Moon"},{"name":"Hora 24","start":"06:31","end":"07:31","startHours":30.52319257868991,"endHours":31.52319257868991,"planetary_lord":"Mercury"}],"taraBala":{"favorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Citrā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Mithuna","Karka","Kanyā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Tulā","Dhanu","Makara"]},"dishaShool":"East (Pūrva)","chandraVasa":"North-West","rahuVasa":"East","anandadiYoga":{"name":"Vajra","quality":"Inauspicious"},"tropicalRitu":"Hemanta (Pre-winter)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-20.27894279309377,"eotMinutes":-10.9643033372293,"ayanamsa":23.5604}},"calendars":{"vikram_samvat":2036,"vikram_samvatsara":"Aṅgirasa","saka_samvat":1901,"saka_samvatsara":"Siddhārthī","bengali_samvat":1386,"malayalam_era":1155,"nanakshahi_year":510,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Māgha","lunar_month_amanta":"Pauṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Kṛṣṇa Saptamī · Vikram 2036 Aṅgirasa · Śaka 1901 Siddhārthī"},"festivals":[],"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 January 20, 1979 CE · Phoenix, USA · Vidhyamitra","description":"January 20, 1979 CE for Phoenix, USA: Kṛṣṇa Saptamī, sūryodaya 07:31, sūryāsta 17:47.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/phoenix/1979-01-20","hreflang_alternates":{"en":"https://vidhyamitra.com/city/phoenix/1979-01-20","sa":"https://sa.vidhyamitra.com/city/phoenix/1979-01-20","hi":"https://hi.vidhyamitra.com/city/phoenix/1979-01-20","x-default":"https://vidhyamitra.com/city/phoenix/1979-01-20"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T13:06:05.908Z","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":"2026-06-02T13:06:05.908Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T13:06:05.908Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}