{"id":"vidhyamitra:city-day:phoenix:1973-01-28:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/phoenix/1973-01-28","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1973-01-28","date_display":"January 28, 1973 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":1973,"month":1,"day":28,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2441710.770833,"kali_year":5074,"ahargana":1853245.2708,"sun":{"sidereal_longitude":284.5549,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":212.3917,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":24,"name":"Navamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Navamī","elongation_degrees":287.8369,"elapsed_within_tithi_degrees":11.8369},"nakshatra":{"number":16,"name":"Viśākhā","pada":4,"moon_longitude":212.3917,"elapsed_within_degrees":12.3917},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":136.9466},"karana":{"half_tithi_index":47,"name":"Gara"},"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":1973,"month":1,"day":28,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2441710.770833,"ahargana":1853245.2708,"kali_year":5074,"ayanamsa_lahiri":23.4769,"grahas":{"sun":{"sidereal_longitude":284.49974999999995,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false},"moon":{"sidereal_longitude":214.02625,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":1},"retrograde":false,"latitude":-3.6279},"mars":{"sidereal_longitude":236.33285,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":284.35175000000004,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":271.16325000000006,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":267.24085,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":50.698350000000005,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":4},"retrograde":true},"rahu":{"sidereal_longitude":266.1471,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":86.1471,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","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":1973,"month":1,"day":28,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2441710.770833,"kali_year":5074,"ahargana":1853245.2708,"sun":{"sidereal_longitude":284.5549,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":212.3917,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":24,"name":"Navamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Navamī","elongation_degrees":287.8369,"elapsed_within_tithi_degrees":11.8369},"nakshatra":{"number":16,"name":"Viśākhā","pada":4,"moon_longitude":212.3917,"elapsed_within_degrees":12.3917},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":136.9466},"karana":{"half_tithi_index":47,"name":"Gara"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.628,"elongation":72.163},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.628,"opposition_distance":107.837}},"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":"17:55","solarNoonLocal":"12:41","dayLengthHours":10.463656355819923,"dayLengthDisplay":"10 Hours 27 Mins 49 Secs","nightLengthDisplay":"13 Hours 32 Mins 11 Secs","moonriseLocal":"02:51","moonsetLocal":"13:08","rahuKala":{"name":"Rāhu Kāla","start":"16:37","end":"17:55","startHours":16.611715000680235,"endHours":17.919672045157725,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:41","end":"14:00","startHours":12.687843867247764,"endHours":13.995800911725254,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:18","end":"16:37","startHours":15.303757956202745,"endHours":16.611715000680235,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:54","end":"10:15","startHours":9.897535505695783,"endHours":10.24632405088978,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:54","end":"08:10","startHours":7.8920013708302985,"endHours":8.171032206985496,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:20","end":"13:02","startHours":12.339055322053767,"endHours":13.036632412441762,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"06:04","end":"06:46","startHours":6.060861508561812,"endHours":6.758438598949807,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:35","end":"07:27","startHours":6.584044326352808,"endHours":7.456015689337802,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:26","end":"15:08","startHours":14.431786593217751,"endHours":15.129363683605746,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:43","end":"18:07","startHours":17.719672045157726,"endHours":18.119672045157724,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:55","end":"18:21","startHours":17.919672045157725,"endHours":18.35565772665022,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:40","end":"19:25","startHours":17.669672045157725,"endHours":19.419672045157725,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:20","end":"01:02","startHours":24.339055322053767,"endHours":25.03663241244176,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"07:27","end":"08:46","startHours":7.456015689337802,"endHours":8.763972733815292,"quality":"inauspicious"},{"name":"Chala","start":"08:46","end":"10:04","startHours":8.763972733815292,"endHours":10.071929778292782,"quality":"neutral"},{"name":"Labha","start":"10:04","end":"11:23","startHours":10.071929778292782,"endHours":11.379886822770274,"quality":"auspicious"},{"name":"Amṛta","start":"11:23","end":"12:41","startHours":11.379886822770274,"endHours":12.687843867247764,"quality":"auspicious"},{"name":"Kāla","start":"12:41","end":"14:00","startHours":12.687843867247764,"endHours":13.995800911725254,"quality":"inauspicious"},{"name":"Śubha","start":"14:00","end":"15:18","startHours":13.995800911725254,"endHours":15.303757956202745,"quality":"auspicious"},{"name":"Roga","start":"15:18","end":"16:37","startHours":15.303757956202745,"endHours":16.611715000680235,"quality":"inauspicious"},{"name":"Udveg","start":"16:37","end":"17:55","startHours":16.611715000680235,"endHours":17.919672045157725,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"17:55","end":"19:37","startHours":17.919672045157725,"endHours":19.611715000680235,"quality":"auspicious"},{"name":"Roga","start":"19:37","end":"21:18","startHours":19.611715000680235,"endHours":21.303757956202745,"quality":"inauspicious"},{"name":"Udveg","start":"21:18","end":"23:00","startHours":21.303757956202745,"endHours":22.995800911725254,"quality":"inauspicious"},{"name":"Chala","start":"23:00","end":"00:41","startHours":22.995800911725254,"endHours":24.687843867247764,"quality":"neutral"},{"name":"Labha","start":"00:41","end":"02:23","startHours":24.687843867247764,"endHours":26.379886822770274,"quality":"auspicious"},{"name":"Amṛta","start":"02:23","end":"04:04","startHours":26.379886822770274,"endHours":28.071929778292784,"quality":"auspicious"},{"name":"Kāla","start":"04:04","end":"05:46","startHours":28.071929778292784,"endHours":29.763972733815294,"quality":"inauspicious"},{"name":"Śubha","start":"05:46","end":"07:27","startHours":29.763972733815294,"endHours":31.456015689337804,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:27","end":"08:27","startHours":7.456015689337802,"endHours":8.456015689337802,"planetary_lord":"Sun"},{"name":"Hora 2","start":"08:27","end":"09:27","startHours":8.456015689337802,"endHours":9.456015689337802,"planetary_lord":"Mars"},{"name":"Hora 3","start":"09:27","end":"10:27","startHours":9.456015689337802,"endHours":10.456015689337802,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"10:27","end":"11:27","startHours":10.456015689337802,"endHours":11.456015689337802,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"11:27","end":"12:27","startHours":11.456015689337802,"endHours":12.456015689337802,"planetary_lord":"Moon"},{"name":"Hora 6","start":"12:27","end":"13:27","startHours":12.456015689337802,"endHours":13.456015689337802,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"13:27","end":"14:27","startHours":13.456015689337802,"endHours":14.456015689337802,"planetary_lord":"Venus"},{"name":"Hora 8","start":"14:27","end":"15:27","startHours":14.456015689337802,"endHours":15.456015689337802,"planetary_lord":"Sun"},{"name":"Hora 9","start":"15:27","end":"16:27","startHours":15.456015689337802,"endHours":16.456015689337804,"planetary_lord":"Mars"},{"name":"Hora 10","start":"16:27","end":"17:27","startHours":16.456015689337804,"endHours":17.456015689337804,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"17:27","end":"18:27","startHours":17.456015689337804,"endHours":18.456015689337804,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"18:27","end":"19:27","startHours":18.456015689337804,"endHours":19.456015689337804,"planetary_lord":"Moon"},{"name":"Hora 13","start":"19:27","end":"20:27","startHours":19.456015689337804,"endHours":20.456015689337804,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"20:27","end":"21:27","startHours":20.456015689337804,"endHours":21.456015689337804,"planetary_lord":"Venus"},{"name":"Hora 15","start":"21:27","end":"22:27","startHours":21.456015689337804,"endHours":22.456015689337804,"planetary_lord":"Sun"},{"name":"Hora 16","start":"22:27","end":"23:27","startHours":22.456015689337804,"endHours":23.456015689337804,"planetary_lord":"Mars"},{"name":"Hora 17","start":"23:27","end":"00:27","startHours":23.456015689337804,"endHours":24.456015689337804,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"00:27","end":"01:27","startHours":24.456015689337804,"endHours":25.456015689337804,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"01:27","end":"02:27","startHours":25.456015689337804,"endHours":26.456015689337804,"planetary_lord":"Moon"},{"name":"Hora 20","start":"02:27","end":"03:27","startHours":26.456015689337804,"endHours":27.456015689337804,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"03:27","end":"04:27","startHours":27.456015689337804,"endHours":28.456015689337804,"planetary_lord":"Venus"},{"name":"Hora 22","start":"04:27","end":"05:27","startHours":28.456015689337804,"endHours":29.456015689337804,"planetary_lord":"Sun"},{"name":"Hora 23","start":"05:27","end":"06:27","startHours":29.456015689337804,"endHours":30.456015689337804,"planetary_lord":"Mars"},{"name":"Hora 24","start":"06:27","end":"07:27","startHours":30.456015689337804,"endHours":31.456015689337804,"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","Vṛṣabha","Siṃha","Kanyā","Vṛścika","Makara"],"unfavorable_rashis":["Mithuna","Karka","Tulā","Dhanu","Kumbha","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"North-East","rahuVasa":"North-East","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":-18.271323074646098,"eotMinutes":-12.974632034865841,"ayanamsa":23.4769}},"calendars":{"vikram_samvat":2030,"vikram_samvatsara":"Akṣaya","saka_samvat":1895,"saka_samvatsara":"Pramādī","bengali_samvat":1380,"malayalam_era":1149,"nanakshahi_year":504,"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 Navamī · Vikram 2030 Akṣaya · Śaka 1895 Pramādī"},"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":"-0562-04-11","event":"Bhagavān Buddha's birth at Lumbinī","chart_id":"buddha","shared_marker":"same Viśākhā","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, 1973 CE · Phoenix, USA · Vidhyamitra","description":"January 28, 1973 CE for Phoenix, USA: Kṛṣṇa Navamī, sūryodaya 07:27, sūryāsta 17:55.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/phoenix/1973-01-28","hreflang_alternates":{"en":"https://vidhyamitra.com/city/phoenix/1973-01-28","sa":"https://sa.vidhyamitra.com/city/phoenix/1973-01-28","hi":"https://hi.vidhyamitra.com/city/phoenix/1973-01-28","x-default":"https://vidhyamitra.com/city/phoenix/1973-01-28"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T15:14:57.465Z","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":"2026-05-31T15:14:57.465Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T15:14:57.465Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}