{"id":"vidhyamitra:city-day:phoenix:1964-01-28:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/phoenix/1964-01-28","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1964-01-28","date_display":"January 28, 1964 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":1964,"month":1,"day":28,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2438422.770833,"kali_year":5065,"ahargana":1849957.2708,"sun":{"sidereal_longitude":283.8681,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":93.3923,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":169.5242,"elapsed_within_tithi_degrees":1.5242},"nakshatra":{"number":8,"name":"Puṣya","pada":1,"moon_longitude":93.3923,"elapsed_within_degrees":0.059},"yoga":{"number":2,"name":"Prīti","sum_longitude":17.2604},"karana":{"half_tithi_index":28,"name":"Viṣṭi"},"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":1964,"month":1,"day":28,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2438422.770833,"ahargana":1849957.2708,"kali_year":5065,"ayanamsa_lahiri":23.3511,"grahas":{"sun":{"sidereal_longitude":283.79717600000004,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false},"moon":{"sidereal_longitude":91.46877599999999,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":7,"name":"Punarvasu","pada":4},"retrograde":false,"latitude":1.0137},"mars":{"sidereal_longitude":288.75037599999996,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":259.53527599999995,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":351.503076,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"retrograde":false},"venus":{"sidereal_longitude":320.478876,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":300.727576,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":80.3612,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":260.3612,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3},"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":1964,"month":1,"day":28,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2438422.770833,"kali_year":5065,"ahargana":1849957.2708,"sun":{"sidereal_longitude":283.8681,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":93.3923,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":169.5242,"elapsed_within_tithi_degrees":1.5242},"nakshatra":{"number":8,"name":"Puṣya","pada":1,"moon_longitude":93.3923,"elapsed_within_degrees":0.059},"yoga":{"number":2,"name":"Prīti","sum_longitude":17.2604},"karana":{"half_tithi_index":28,"name":"Viṣṭi"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":1.014,"elongation":169.524},"lunar":{"type":"lunar","occurs":false,"moon_latitude":1.014,"opposition_distance":10.476}},"eclipse_window_40days":[{"offset_days":-13,"type":"solar","occurs":true,"moon_latitude":-0.89,"elongation":1.925}]},"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":"07:28","sunsetLocal":"17:55","solarNoonLocal":"12:41","dayLengthHours":10.442701433548642,"dayLengthDisplay":"10 Hours 26 Mins 34 Secs","nightLengthDisplay":"13 Hours 33 Mins 26 Secs","moonriseLocal":"16:50","moonsetLocal":"06:54","rahuKala":{"name":"Rāhu Kāla","start":"15:18","end":"16:36","startHours":15.298519225634926,"endHours":16.603856904828504,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:05","end":"11:23","startHours":10.077168508860606,"endHours":11.382506188054185,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:41","end":"14:00","startHours":12.687843867247764,"endHours":13.993181546441345,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:54","end":"10:15","startHours":9.903123484968127,"endHours":10.251213532753082,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:54","end":"08:11","startHours":7.901605710204637,"endHours":8.180077748432602,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:20","end":"13:02","startHours":12.339753819462809,"endHours":13.03593391503272,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"06:04","end":"06:46","startHours":6.0741329593336255,"endHours":6.770313054903535,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:36","end":"07:28","startHours":6.596268031011057,"endHours":7.466493150473444,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:26","end":"15:07","startHours":14.428294106172538,"endHours":15.124474201742448,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:43","end":"18:07","startHours":17.709194584022086,"endHours":18.109194584022084,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:55","end":"18:21","startHours":17.909194584022085,"endHours":18.34430714375328,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:40","end":"19:25","startHours":17.659194584022085,"endHours":19.409194584022085,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:20","end":"01:02","startHours":24.33975381946281,"endHours":25.035933915032718,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"07:28","end":"08:46","startHours":7.466493150473444,"endHours":8.771830829667024,"quality":"inauspicious"},{"name":"Udveg","start":"08:46","end":"10:05","startHours":8.771830829667024,"endHours":10.077168508860606,"quality":"inauspicious"},{"name":"Chala","start":"10:05","end":"11:23","startHours":10.077168508860606,"endHours":11.382506188054185,"quality":"neutral"},{"name":"Labha","start":"11:23","end":"12:41","startHours":11.382506188054185,"endHours":12.687843867247764,"quality":"auspicious"},{"name":"Amṛta","start":"12:41","end":"14:00","startHours":12.687843867247764,"endHours":13.993181546441345,"quality":"auspicious"},{"name":"Kāla","start":"14:00","end":"15:18","startHours":13.993181546441345,"endHours":15.298519225634926,"quality":"inauspicious"},{"name":"Śubha","start":"15:18","end":"16:36","startHours":15.298519225634926,"endHours":16.603856904828504,"quality":"auspicious"},{"name":"Roga","start":"16:36","end":"17:55","startHours":16.603856904828504,"endHours":17.909194584022085,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"17:55","end":"19:36","startHours":17.909194584022085,"endHours":19.603856904828504,"quality":"inauspicious"},{"name":"Śubha","start":"19:36","end":"21:18","startHours":19.603856904828504,"endHours":21.298519225634926,"quality":"auspicious"},{"name":"Roga","start":"21:18","end":"23:00","startHours":21.298519225634926,"endHours":22.993181546441345,"quality":"inauspicious"},{"name":"Udveg","start":"23:00","end":"00:41","startHours":22.993181546441345,"endHours":24.687843867247764,"quality":"inauspicious"},{"name":"Chala","start":"00:41","end":"02:23","startHours":24.687843867247764,"endHours":26.382506188054183,"quality":"neutral"},{"name":"Labha","start":"02:23","end":"04:05","startHours":26.382506188054183,"endHours":28.077168508860602,"quality":"auspicious"},{"name":"Amṛta","start":"04:05","end":"05:46","startHours":28.077168508860602,"endHours":29.771830829667024,"quality":"auspicious"},{"name":"Kāla","start":"05:46","end":"07:28","startHours":29.771830829667024,"endHours":31.466493150473443,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:28","end":"08:28","startHours":7.466493150473444,"endHours":8.466493150473443,"planetary_lord":"Mars"},{"name":"Hora 2","start":"08:28","end":"09:28","startHours":8.466493150473443,"endHours":9.466493150473443,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"09:28","end":"10:28","startHours":9.466493150473443,"endHours":10.466493150473443,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"10:28","end":"11:28","startHours":10.466493150473443,"endHours":11.466493150473443,"planetary_lord":"Moon"},{"name":"Hora 5","start":"11:28","end":"12:28","startHours":11.466493150473443,"endHours":12.466493150473443,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"12:28","end":"13:28","startHours":12.466493150473443,"endHours":13.466493150473443,"planetary_lord":"Venus"},{"name":"Hora 7","start":"13:28","end":"14:28","startHours":13.466493150473443,"endHours":14.466493150473443,"planetary_lord":"Sun"},{"name":"Hora 8","start":"14:28","end":"15:28","startHours":14.466493150473443,"endHours":15.466493150473443,"planetary_lord":"Mars"},{"name":"Hora 9","start":"15:28","end":"16:28","startHours":15.466493150473443,"endHours":16.466493150473443,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"16:28","end":"17:28","startHours":16.466493150473443,"endHours":17.466493150473443,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"17:28","end":"18:28","startHours":17.466493150473443,"endHours":18.466493150473443,"planetary_lord":"Moon"},{"name":"Hora 12","start":"18:28","end":"19:28","startHours":18.466493150473443,"endHours":19.466493150473443,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"19:28","end":"20:28","startHours":19.466493150473443,"endHours":20.466493150473443,"planetary_lord":"Venus"},{"name":"Hora 14","start":"20:28","end":"21:28","startHours":20.466493150473443,"endHours":21.466493150473443,"planetary_lord":"Sun"},{"name":"Hora 15","start":"21:28","end":"22:28","startHours":21.466493150473443,"endHours":22.466493150473443,"planetary_lord":"Mars"},{"name":"Hora 16","start":"22:28","end":"23:28","startHours":22.466493150473443,"endHours":23.466493150473443,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"23:28","end":"00:28","startHours":23.466493150473443,"endHours":24.466493150473443,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"00:28","end":"01:28","startHours":24.466493150473443,"endHours":25.466493150473443,"planetary_lord":"Moon"},{"name":"Hora 19","start":"01:28","end":"02:28","startHours":25.466493150473443,"endHours":26.466493150473443,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"02:28","end":"03:28","startHours":26.466493150473443,"endHours":27.466493150473443,"planetary_lord":"Venus"},{"name":"Hora 21","start":"03:28","end":"04:28","startHours":27.466493150473443,"endHours":28.466493150473443,"planetary_lord":"Sun"},{"name":"Hora 22","start":"04:28","end":"05:28","startHours":28.466493150473443,"endHours":29.466493150473443,"planetary_lord":"Mars"},{"name":"Hora 23","start":"05:28","end":"06:28","startHours":29.466493150473443,"endHours":30.466493150473443,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"06:28","end":"07:28","startHours":30.466493150473443,"endHours":31.466493150473443,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Revatī"],"unfavorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Citrā","Svātī","Viśākhā","Anurādhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"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":"North (Uttara)","chandraVasa":"South-West","rahuVasa":"North","anandadiYoga":{"name":"Utpāta","quality":"Inauspicious"},"tropicalRitu":"Śiśira (Winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-18.482969221109393,"eotMinutes":-12.974632034865841,"ayanamsa":23.3511}},"calendars":{"vikram_samvat":2021,"vikram_samvatsara":"Piṅgala","saka_samvat":1886,"saka_samvatsara":"Krodhi","bengali_samvat":1371,"malayalam_era":1140,"nanakshahi_year":495,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Māgha","lunar_month_amanta":"Māgha","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 Śukla Pūrṇimā · Vikram 2021 Piṅgala · Śaka 1886 Krodhi"},"festivals":[{"id":"magha-purnima","name":"Māghī Pūrṇimā","name_sanskrit":"माघी पूर्णिमा","tradition":"Pan-Hindu","significance":"Sacred snāna at Prayāga; Māgha-snāna culmination.","vrata":true,"detection":{"tithi_number":15,"tithi_paksha":"Śukla","lunar_month":"Māgha"},"precedence":2}],"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":[{"historical_date":"-3137-10-04","event":"Mahābhārata Day 1 (Bhagavad Gītā delivered)","chart_id":"krishna","shared_marker":"same Śukla Pūrṇimā","url":"/day/-3137-10-04","relevance":0.5},{"historical_date":"-0562-04-11","event":"Bhagavān Buddha's birth at Lumbinī","chart_id":"buddha","shared_marker":"same Śukla Pūrṇimā","url":"/day/-0562-04-11","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 January 28, 1964 CE · Phoenix, USA · Vidhyamitra","description":"January 28, 1964 CE for Phoenix, USA: Śukla Pūrṇimā, sūryodaya 07:28, sūryāsta 17:55.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/phoenix/1964-01-28","hreflang_alternates":{"en":"https://vidhyamitra.com/city/phoenix/1964-01-28","sa":"https://sa.vidhyamitra.com/city/phoenix/1964-01-28","hi":"https://hi.vidhyamitra.com/city/phoenix/1964-01-28","x-default":"https://vidhyamitra.com/city/phoenix/1964-01-28"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T09:17:38.209Z","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":"2026-06-01T09:17:38.209Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T09:17:38.209Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}