{"id":"vidhyamitra:city-day:phoenix:1980-01-08:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/phoenix/1980-01-08","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1980-01-08","date_display":"January 8, 1980 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":1980,"month":1,"day":8,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444246.770833,"kali_year":5081,"ahargana":1855781.2708,"sun":{"sidereal_longitude":263.2029,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":149.3794,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":21,"name":"Ṣaṣṭhī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ṣaṣṭhī","elongation_degrees":246.1765,"elapsed_within_tithi_degrees":6.1765},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1,"moon_longitude":149.3794,"elapsed_within_degrees":2.7128},"yoga":{"number":4,"name":"Saubhāgya","sum_longitude":52.5824},"karana":{"half_tithi_index":41,"name":"Vaṇija"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"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":1980,"month":1,"day":8,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444246.770833,"ahargana":1855781.2708,"kali_year":5081,"ayanamsa_lahiri":23.5739,"grahas":{"sun":{"sidereal_longitude":263.33115599999996,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":146.764856,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false,"latitude":1.3595},"mars":{"sidereal_longitude":141.646056,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":255.59655599999996,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":136.19025599999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":true},"venus":{"sidereal_longitude":296.768156,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":153.26315599999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":131.7776,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":311.7776,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","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":1980,"month":1,"day":8,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444246.770833,"kali_year":5081,"ahargana":1855781.2708,"sun":{"sidereal_longitude":263.2029,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":149.3794,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":21,"name":"Ṣaṣṭhī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ṣaṣṭhī","elongation_degrees":246.1765,"elapsed_within_tithi_degrees":6.1765},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1,"moon_longitude":149.3794,"elapsed_within_degrees":2.7128},"yoga":{"number":4,"name":"Saubhāgya","sum_longitude":52.5824},"karana":{"half_tithi_index":41,"name":"Vaṇija"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":1.36,"elongation":113.824},"lunar":{"type":"lunar","occurs":false,"moon_latitude":1.36,"opposition_distance":66.176}},"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":"07:34","sunsetLocal":"17:36","solarNoonLocal":"12:35","dayLengthHours":10.046015453756183,"dayLengthDisplay":"10 Hours 02 Mins 46 Secs","nightLengthDisplay":"13 Hours 57 Mins 14 Secs","moonriseLocal":"22:36","moonsetLocal":"11:02","rahuKala":{"name":"Rāhu Kāla","start":"15:06","end":"16:21","startHours":15.094799757327834,"endHours":16.350551689047357,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:04","end":"11:20","startHours":10.071792030449743,"endHours":11.327543962169266,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:35","end":"13:50","startHours":12.583295893888788,"endHours":13.839047825608311,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:54","end":"10:14","startHours":9.904358439553807,"endHours":10.23922562134568,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:59","end":"08:15","startHours":7.978872144250539,"endHours":8.246765889684037,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:15","end":"12:55","startHours":12.248428712096915,"endHours":12.918163075680662,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"06:13","end":"06:53","startHours":6.220819439843206,"endHours":6.890553803426952,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:43","end":"07:34","startHours":6.723120212531016,"endHours":7.560288167010698,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:15","end":"14:56","startHours":14.257631802848152,"endHours":14.927366166431899,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:24","end":"17:48","startHours":17.40630362076688,"endHours":17.80630362076688,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:36","end":"18:01","startHours":17.60630362076688,"endHours":18.02488759800672,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:21","end":"19:06","startHours":17.35630362076688,"endHours":19.10630362076688,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:15","end":"00:55","startHours":24.248428712096917,"endHours":24.91816307568066,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"07:34","end":"08:49","startHours":7.560288167010698,"endHours":8.81604009873022,"quality":"inauspicious"},{"name":"Udveg","start":"08:49","end":"10:04","startHours":8.81604009873022,"endHours":10.071792030449743,"quality":"inauspicious"},{"name":"Chala","start":"10:04","end":"11:20","startHours":10.071792030449743,"endHours":11.327543962169266,"quality":"neutral"},{"name":"Labha","start":"11:20","end":"12:35","startHours":11.327543962169266,"endHours":12.583295893888788,"quality":"auspicious"},{"name":"Amṛta","start":"12:35","end":"13:50","startHours":12.583295893888788,"endHours":13.839047825608311,"quality":"auspicious"},{"name":"Kāla","start":"13:50","end":"15:06","startHours":13.839047825608311,"endHours":15.094799757327834,"quality":"inauspicious"},{"name":"Śubha","start":"15:06","end":"16:21","startHours":15.094799757327834,"endHours":16.350551689047357,"quality":"auspicious"},{"name":"Roga","start":"16:21","end":"17:36","startHours":16.350551689047357,"endHours":17.60630362076688,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"17:36","end":"19:21","startHours":17.60630362076688,"endHours":19.350551689047357,"quality":"inauspicious"},{"name":"Śubha","start":"19:21","end":"21:06","startHours":19.350551689047357,"endHours":21.094799757327834,"quality":"auspicious"},{"name":"Roga","start":"21:06","end":"22:50","startHours":21.094799757327834,"endHours":22.83904782560831,"quality":"inauspicious"},{"name":"Udveg","start":"22:50","end":"00:35","startHours":22.83904782560831,"endHours":24.58329589388879,"quality":"inauspicious"},{"name":"Chala","start":"00:35","end":"02:20","startHours":24.58329589388879,"endHours":26.327543962169266,"quality":"neutral"},{"name":"Labha","start":"02:20","end":"04:04","startHours":26.327543962169266,"endHours":28.071792030449743,"quality":"auspicious"},{"name":"Amṛta","start":"04:04","end":"05:49","startHours":28.071792030449743,"endHours":29.81604009873022,"quality":"auspicious"},{"name":"Kāla","start":"05:49","end":"07:34","startHours":29.81604009873022,"endHours":31.560288167010697,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:34","end":"08:34","startHours":7.560288167010698,"endHours":8.560288167010697,"planetary_lord":"Mars"},{"name":"Hora 2","start":"08:34","end":"09:34","startHours":8.560288167010697,"endHours":9.560288167010697,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"09:34","end":"10:34","startHours":9.560288167010697,"endHours":10.560288167010697,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"10:34","end":"11:34","startHours":10.560288167010697,"endHours":11.560288167010697,"planetary_lord":"Moon"},{"name":"Hora 5","start":"11:34","end":"12:34","startHours":11.560288167010697,"endHours":12.560288167010697,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"12:34","end":"13:34","startHours":12.560288167010697,"endHours":13.560288167010697,"planetary_lord":"Venus"},{"name":"Hora 7","start":"13:34","end":"14:34","startHours":13.560288167010697,"endHours":14.560288167010697,"planetary_lord":"Sun"},{"name":"Hora 8","start":"14:34","end":"15:34","startHours":14.560288167010697,"endHours":15.560288167010697,"planetary_lord":"Mars"},{"name":"Hora 9","start":"15:34","end":"16:34","startHours":15.560288167010697,"endHours":16.560288167010697,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"16:34","end":"17:34","startHours":16.560288167010697,"endHours":17.560288167010697,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"17:34","end":"18:34","startHours":17.560288167010697,"endHours":18.560288167010697,"planetary_lord":"Moon"},{"name":"Hora 12","start":"18:34","end":"19:34","startHours":18.560288167010697,"endHours":19.560288167010697,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"19:34","end":"20:34","startHours":19.560288167010697,"endHours":20.560288167010697,"planetary_lord":"Venus"},{"name":"Hora 14","start":"20:34","end":"21:34","startHours":20.560288167010697,"endHours":21.560288167010697,"planetary_lord":"Sun"},{"name":"Hora 15","start":"21:34","end":"22:34","startHours":21.560288167010697,"endHours":22.560288167010697,"planetary_lord":"Mars"},{"name":"Hora 16","start":"22:34","end":"23:34","startHours":22.560288167010697,"endHours":23.560288167010697,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"23:34","end":"00:34","startHours":23.560288167010697,"endHours":24.560288167010697,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"00:34","end":"01:34","startHours":24.560288167010697,"endHours":25.560288167010697,"planetary_lord":"Moon"},{"name":"Hora 19","start":"01:34","end":"02:34","startHours":25.560288167010697,"endHours":26.560288167010697,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"02:34","end":"03:34","startHours":26.560288167010697,"endHours":27.560288167010697,"planetary_lord":"Venus"},{"name":"Hora 21","start":"03:34","end":"04:34","startHours":27.560288167010697,"endHours":28.560288167010697,"planetary_lord":"Sun"},{"name":"Hora 22","start":"04:34","end":"05:34","startHours":28.560288167010697,"endHours":29.560288167010697,"planetary_lord":"Mars"},{"name":"Hora 23","start":"05:34","end":"06:34","startHours":29.560288167010697,"endHours":30.560288167010697,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"06:34","end":"07:34","startHours":30.560288167010697,"endHours":31.560288167010697,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Hasta","Citrā","Svātī","Viśākhā","Anurādhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Mithuna","Siṃha","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Kanyā","Vṛścika","Dhanu","Mīna"]},"dishaShool":"North (Uttara)","chandraVasa":"West","rahuVasa":"North","anandadiYoga":{"name":"Śubha","quality":"Auspicious"},"tropicalRitu":"Hemanta (Pre-winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-22.367483538467553,"eotMinutes":-6.7017536333273355,"ayanamsa":23.5739}},"calendars":{"vikram_samvat":2037,"vikram_samvatsara":"Śrīmukha","saka_samvat":1902,"saka_samvatsara":"Raudra","bengali_samvat":1387,"malayalam_era":1156,"nanakshahi_year":511,"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":"Dhanus (Mārgaḻi)","ritu":"Śiśira (Winter)","display_summary":"Māgha Kṛṣṇa Ṣaṣṭhī · Vikram 2037 Śrīmukha · Śaka 1902 Raudra"},"festivals":[],"todays_walk":{"walk":{"id":"mangala-walk","name":"Maṅgala Walk","name_sanskrit":"मङ्गल यात्रा","type":"graha","description":"Right action + BG 2.31-38 (kṣatriya-dharma).","step_count":7,"url":"/walk/mangala-walk"},"reason":"Maṅgalavāra (Tuesday) — 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 8, 1980 CE · Phoenix, USA · Vidhyamitra","description":"January 8, 1980 CE for Phoenix, USA: Kṛṣṇa Ṣaṣṭhī, sūryodaya 07:34, sūryāsta 17:36.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/phoenix/1980-01-08","hreflang_alternates":{"en":"https://vidhyamitra.com/city/phoenix/1980-01-08","sa":"https://sa.vidhyamitra.com/city/phoenix/1980-01-08","hi":"https://hi.vidhyamitra.com/city/phoenix/1980-01-08","x-default":"https://vidhyamitra.com/city/phoenix/1980-01-08"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T04:40:14.217Z","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":"2026-06-02T04:40:14.217Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T04:40:14.217Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}