{"id":"vidhyamitra:city-day:phoenix:1979-04-07:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/phoenix/1979-04-07","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1979-04-07","date_display":"April 7, 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":4,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2443970.770833,"kali_year":5080,"ahargana":1855505.2708,"sun":{"sidereal_longitude":353.2763,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":110.1687,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":116.8924,"elapsed_within_tithi_degrees":8.8924},"nakshatra":{"number":9,"name":"Āśleṣā","pada":2,"moon_longitude":110.1687,"elapsed_within_degrees":3.5021},"yoga":{"number":8,"name":"Dhṛti","sum_longitude":103.4451},"karana":{"half_tithi_index":19,"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":1979,"month":4,"day":7,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2443970.770833,"ahargana":1855505.2708,"kali_year":5080,"ayanamsa_lahiri":23.5633,"grahas":{"sun":{"sidereal_longitude":353.073902,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":111.763802,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":2},"retrograde":false,"latitude":-2.658},"mars":{"sidereal_longitude":336.698702,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":332.554402,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4},"retrograde":true},"jupiter":{"sidereal_longitude":95.38070199999999,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":1},"retrograde":false},"venus":{"sidereal_longitude":317.404002,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":134.28570200000001,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":146.4014,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":326.4014,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva 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":1979,"month":4,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2443970.770833,"kali_year":5080,"ahargana":1855505.2708,"sun":{"sidereal_longitude":353.2763,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":110.1687,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":116.8924,"elapsed_within_tithi_degrees":8.8924},"nakshatra":{"number":9,"name":"Āśleṣā","pada":2,"moon_longitude":110.1687,"elapsed_within_degrees":3.5021},"yoga":{"number":8,"name":"Dhṛti","sum_longitude":103.4451},"karana":{"half_tithi_index":19,"name":"Gara"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.658,"elongation":116.892},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.658,"opposition_distance":63.108}},"eclipse_window_40days":[{"offset_days":-10,"type":"solar","occurs":true,"moon_latitude":-1.291,"elongation":0.19}]},"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":"06:09","sunsetLocal":"18:52","solarNoonLocal":"12:31","dayLengthHours":12.713453883853788,"dayLengthDisplay":"12 Hours 42 Mins 48 Secs","nightLengthDisplay":"11 Hours 17 Mins 12 Secs","moonriseLocal":"13:38","moonsetLocal":"03:13","rahuKala":{"name":"Rāhu Kāla","start":"09:20","end":"10:55","startHours":9.334703404783767,"endHours":10.92388514026549,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"14:06","end":"15:41","startHours":14.102248611228937,"endHours":15.69143034671066,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"06:09","end":"07:45","startHours":6.156339933820319,"endHours":7.745521669302042,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:07","end":"09:33","startHours":9.122812506719537,"endHours":9.546594302847996,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:41","end":"07:02","startHours":6.686067178980894,"endHours":7.025092615883661,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:05","end":"12:56","startHours":12.089285079618755,"endHours":12.936848671875673,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:28","end":"05:19","startHours":4.461212749306481,"endHours":5.3087763415634,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:06","end":"06:09","startHours":5.09688544349917,"endHours":6.156339933820319,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:38","end":"15:29","startHours":14.631975856389513,"endHours":15.479539448646433,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:40","end":"19:04","startHours":18.66979381767411,"endHours":19.069793817674107,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:52","end":"19:24","startHours":18.869793817674108,"endHours":19.399521062834683,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:37","end":"20:22","startHours":18.619793817674108,"endHours":20.369793817674108,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:05","end":"00:56","startHours":24.089285079618755,"endHours":24.936848671875673,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"06:09","end":"07:45","startHours":6.156339933820319,"endHours":7.745521669302042,"quality":"inauspicious"},{"name":"Śubha","start":"07:45","end":"09:20","startHours":7.745521669302042,"endHours":9.334703404783767,"quality":"auspicious"},{"name":"Roga","start":"09:20","end":"10:55","startHours":9.334703404783767,"endHours":10.92388514026549,"quality":"inauspicious"},{"name":"Udveg","start":"10:55","end":"12:31","startHours":10.92388514026549,"endHours":12.513066875747214,"quality":"inauspicious"},{"name":"Chala","start":"12:31","end":"14:06","startHours":12.513066875747214,"endHours":14.102248611228937,"quality":"neutral"},{"name":"Labha","start":"14:06","end":"15:41","startHours":14.102248611228937,"endHours":15.69143034671066,"quality":"auspicious"},{"name":"Amṛta","start":"15:41","end":"17:17","startHours":15.69143034671066,"endHours":17.280612082192384,"quality":"auspicious"},{"name":"Kāla","start":"17:17","end":"18:52","startHours":17.280612082192384,"endHours":18.869793817674108,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"18:52","end":"20:17","startHours":18.869793817674108,"endHours":20.280612082192384,"quality":"auspicious"},{"name":"Amṛta","start":"20:17","end":"21:41","startHours":20.280612082192384,"endHours":21.69143034671066,"quality":"auspicious"},{"name":"Kāla","start":"21:41","end":"23:06","startHours":21.69143034671066,"endHours":23.102248611228937,"quality":"inauspicious"},{"name":"Śubha","start":"23:06","end":"00:31","startHours":23.102248611228937,"endHours":24.513066875747214,"quality":"auspicious"},{"name":"Roga","start":"00:31","end":"01:55","startHours":24.513066875747214,"endHours":25.92388514026549,"quality":"inauspicious"},{"name":"Udveg","start":"01:55","end":"03:20","startHours":25.92388514026549,"endHours":27.334703404783767,"quality":"inauspicious"},{"name":"Chala","start":"03:20","end":"04:45","startHours":27.334703404783767,"endHours":28.745521669302043,"quality":"neutral"},{"name":"Labha","start":"04:45","end":"06:09","startHours":28.745521669302043,"endHours":30.15633993382032,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:09","end":"07:09","startHours":6.156339933820319,"endHours":7.156339933820319,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"07:09","end":"08:09","startHours":7.156339933820319,"endHours":8.15633993382032,"planetary_lord":"Moon"},{"name":"Hora 3","start":"08:09","end":"09:09","startHours":8.15633993382032,"endHours":9.15633993382032,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"09:09","end":"10:09","startHours":9.15633993382032,"endHours":10.15633993382032,"planetary_lord":"Venus"},{"name":"Hora 5","start":"10:09","end":"11:09","startHours":10.15633993382032,"endHours":11.15633993382032,"planetary_lord":"Sun"},{"name":"Hora 6","start":"11:09","end":"12:09","startHours":11.15633993382032,"endHours":12.15633993382032,"planetary_lord":"Mars"},{"name":"Hora 7","start":"12:09","end":"13:09","startHours":12.15633993382032,"endHours":13.15633993382032,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"13:09","end":"14:09","startHours":13.15633993382032,"endHours":14.15633993382032,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"14:09","end":"15:09","startHours":14.15633993382032,"endHours":15.15633993382032,"planetary_lord":"Moon"},{"name":"Hora 10","start":"15:09","end":"16:09","startHours":15.15633993382032,"endHours":16.15633993382032,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"16:09","end":"17:09","startHours":16.15633993382032,"endHours":17.15633993382032,"planetary_lord":"Venus"},{"name":"Hora 12","start":"17:09","end":"18:09","startHours":17.15633993382032,"endHours":18.15633993382032,"planetary_lord":"Sun"},{"name":"Hora 13","start":"18:09","end":"19:09","startHours":18.15633993382032,"endHours":19.15633993382032,"planetary_lord":"Mars"},{"name":"Hora 14","start":"19:09","end":"20:09","startHours":19.15633993382032,"endHours":20.15633993382032,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"20:09","end":"21:09","startHours":20.15633993382032,"endHours":21.15633993382032,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"21:09","end":"22:09","startHours":21.15633993382032,"endHours":22.15633993382032,"planetary_lord":"Moon"},{"name":"Hora 17","start":"22:09","end":"23:09","startHours":22.15633993382032,"endHours":23.15633993382032,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"23:09","end":"00:09","startHours":23.15633993382032,"endHours":24.15633993382032,"planetary_lord":"Venus"},{"name":"Hora 19","start":"00:09","end":"01:09","startHours":24.15633993382032,"endHours":25.15633993382032,"planetary_lord":"Sun"},{"name":"Hora 20","start":"01:09","end":"02:09","startHours":25.15633993382032,"endHours":26.15633993382032,"planetary_lord":"Mars"},{"name":"Hora 21","start":"02:09","end":"03:09","startHours":26.15633993382032,"endHours":27.15633993382032,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"03:09","end":"04:09","startHours":27.15633993382032,"endHours":28.15633993382032,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"04:09","end":"05:09","startHours":28.15633993382032,"endHours":29.15633993382032,"planetary_lord":"Moon"},{"name":"Hora 24","start":"05:09","end":"06:09","startHours":29.15633993382032,"endHours":30.15633993382032,"planetary_lord":"Mercury"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"unfavorable_nakshatras":["Ārdrā","Punarvasu","Puṣya","Aśleṣā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Vṛṣabha","Karka","Kanyā","Dhanu","Makara"],"unfavorable_rashis":["Mithuna","Siṃha","Tulā","Vṛścika","Kumbha","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-West","rahuVasa":"East","anandadiYoga":{"name":"Saumya","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":6.538740868211776,"eotMinutes":-2.4880125448329173,"ayanamsa":23.5633}},"calendars":{"vikram_samvat":2036,"vikram_samvatsara":"Aṅgirasa","saka_samvat":1901,"saka_samvatsara":"Siddhārthī","bengali_samvat":1386,"malayalam_era":1155,"nanakshahi_year":510,"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 Daśamī · 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 April 7, 1979 CE · Phoenix, USA · Vidhyamitra","description":"April 7, 1979 CE for Phoenix, USA: Śukla Daśamī, sūryodaya 06:09, sūryāsta 18:52.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/phoenix/1979-04-07","hreflang_alternates":{"en":"https://vidhyamitra.com/city/phoenix/1979-04-07","sa":"https://sa.vidhyamitra.com/city/phoenix/1979-04-07","hi":"https://hi.vidhyamitra.com/city/phoenix/1979-04-07","x-default":"https://vidhyamitra.com/city/phoenix/1979-04-07"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-03T06:05:13.324Z","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":"2026-06-03T06:05:13.324Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-03T06:05:13.324Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}