{"id":"vidhyamitra:city-day:phoenix:1973-12-07:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/phoenix/1973-12-07","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1973-12-07","date_display":"December 7, 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":12,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2442023.770833,"kali_year":5075,"ahargana":1853558.2708,"sun":{"sidereal_longitude":230.9099,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":10.8328,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":12,"name":"Dvādaśī","paksha":"Śukla","full_name":"Śukla Dvādaśī","elongation_degrees":139.9229,"elapsed_within_tithi_degrees":7.9229},"nakshatra":{"number":1,"name":"Aśvinī","pada":4,"moon_longitude":10.8328,"elapsed_within_degrees":10.8328},"yoga":{"number":19,"name":"Parigha","sum_longitude":241.7427},"karana":{"half_tithi_index":23,"name":"Bālava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"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":12,"day":7,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2442023.770833,"ahargana":1853558.2708,"kali_year":5075,"ayanamsa_lahiri":23.4888,"grahas":{"sun":{"sidereal_longitude":231.299391,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":9.859891000000005,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":3},"retrograde":false,"latitude":3.8452},"mars":{"sidereal_longitude":2.964891000000023,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":214.09919100000002,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":286.18959100000006,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false},"venus":{"sidereal_longitude":276.2374910000001,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":69.32519100000002,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":249.5629,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":69.5629,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":1},"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":12,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2442023.770833,"kali_year":5075,"ahargana":1853558.2708,"sun":{"sidereal_longitude":230.9099,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":10.8328,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":12,"name":"Dvādaśī","paksha":"Śukla","full_name":"Śukla Dvādaśī","elongation_degrees":139.9229,"elapsed_within_tithi_degrees":7.9229},"nakshatra":{"number":1,"name":"Aśvinī","pada":4,"moon_longitude":10.8328,"elapsed_within_degrees":10.8328},"yoga":{"number":19,"name":"Parigha","sum_longitude":241.7427},"karana":{"half_tithi_index":23,"name":"Bālava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.845,"elongation":139.923},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.845,"opposition_distance":40.077}},"eclipse_window_40days":[{"offset_days":3,"type":"lunar","occurs":true,"moon_latitude":1.303,"opposition_distance":1.423}]},"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":"07:20","sunsetLocal":"17:21","solarNoonLocal":"12:21","dayLengthHours":10.024732808282032,"dayLengthDisplay":"10 Hours 01 Mins 29 Secs","nightLengthDisplay":"13 Hours 58 Mins 31 Secs","moonriseLocal":"14:58","moonsetLocal":"04:12","rahuKala":{"name":"Rāhu Kāla","start":"11:05","end":"12:21","startHours":11.089780123575789,"endHours":12.342871724611044,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"14:51","end":"16:06","startHours":14.84905492668155,"endHours":16.102146527716805,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:35","end":"09:50","startHours":8.583596921505281,"endHours":9.836688522540534,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:40","end":"10:00","startHours":9.669609642402502,"endHours":10.00376740267857,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:45","end":"08:01","startHours":7.748202520815112,"endHours":8.015528729035966,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:01","end":"12:41","startHours":12.008713964334977,"endHours":12.677029484887111,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"06:00","end":"06:40","startHours":5.993874279365756,"endHours":6.662189799917892,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:30","end":"07:20","startHours":6.495110919779858,"endHours":7.330505320470027,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:01","end":"14:41","startHours":14.013660525991382,"endHours":14.681976046543518,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:09","end":"17:33","startHours":17.15523812875206,"endHours":17.55523812875206,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:21","end":"17:46","startHours":17.35523812875206,"endHours":17.772935329097145,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:06","end":"18:51","startHours":17.10523812875206,"endHours":18.85523812875206,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:01","end":"00:41","startHours":24.008713964334977,"endHours":24.67702948488711,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"07:20","end":"08:35","startHours":7.330505320470027,"endHours":8.583596921505281,"quality":"neutral"},{"name":"Labha","start":"08:35","end":"09:50","startHours":8.583596921505281,"endHours":9.836688522540534,"quality":"auspicious"},{"name":"Amṛta","start":"09:50","end":"11:05","startHours":9.836688522540534,"endHours":11.089780123575789,"quality":"auspicious"},{"name":"Kāla","start":"11:05","end":"12:21","startHours":11.089780123575789,"endHours":12.342871724611044,"quality":"inauspicious"},{"name":"Śubha","start":"12:21","end":"13:36","startHours":12.342871724611044,"endHours":13.595963325646297,"quality":"auspicious"},{"name":"Roga","start":"13:36","end":"14:51","startHours":13.595963325646297,"endHours":14.84905492668155,"quality":"inauspicious"},{"name":"Udveg","start":"14:51","end":"16:06","startHours":14.84905492668155,"endHours":16.102146527716805,"quality":"inauspicious"},{"name":"Chala","start":"16:06","end":"17:21","startHours":16.102146527716805,"endHours":17.35523812875206,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"17:21","end":"19:06","startHours":17.35523812875206,"endHours":19.102146527716805,"quality":"inauspicious"},{"name":"Udveg","start":"19:06","end":"20:51","startHours":19.102146527716805,"endHours":20.849054926681553,"quality":"inauspicious"},{"name":"Chala","start":"20:51","end":"22:36","startHours":20.849054926681553,"endHours":22.5959633256463,"quality":"neutral"},{"name":"Labha","start":"22:36","end":"00:21","startHours":22.5959633256463,"endHours":24.342871724611044,"quality":"auspicious"},{"name":"Amṛta","start":"00:21","end":"02:05","startHours":24.342871724611044,"endHours":26.08978012357579,"quality":"auspicious"},{"name":"Kāla","start":"02:05","end":"03:50","startHours":26.08978012357579,"endHours":27.836688522540534,"quality":"inauspicious"},{"name":"Śubha","start":"03:50","end":"05:35","startHours":27.836688522540534,"endHours":29.583596921505283,"quality":"auspicious"},{"name":"Roga","start":"05:35","end":"07:20","startHours":29.583596921505283,"endHours":31.330505320470028,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:20","end":"08:20","startHours":7.330505320470027,"endHours":8.330505320470028,"planetary_lord":"Venus"},{"name":"Hora 2","start":"08:20","end":"09:20","startHours":8.330505320470028,"endHours":9.330505320470028,"planetary_lord":"Sun"},{"name":"Hora 3","start":"09:20","end":"10:20","startHours":9.330505320470028,"endHours":10.330505320470028,"planetary_lord":"Mars"},{"name":"Hora 4","start":"10:20","end":"11:20","startHours":10.330505320470028,"endHours":11.330505320470028,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"11:20","end":"12:20","startHours":11.330505320470028,"endHours":12.330505320470028,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"12:20","end":"13:20","startHours":12.330505320470028,"endHours":13.330505320470028,"planetary_lord":"Moon"},{"name":"Hora 7","start":"13:20","end":"14:20","startHours":13.330505320470028,"endHours":14.330505320470028,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"14:20","end":"15:20","startHours":14.330505320470028,"endHours":15.330505320470028,"planetary_lord":"Venus"},{"name":"Hora 9","start":"15:20","end":"16:20","startHours":15.330505320470028,"endHours":16.330505320470028,"planetary_lord":"Sun"},{"name":"Hora 10","start":"16:20","end":"17:20","startHours":16.330505320470028,"endHours":17.330505320470028,"planetary_lord":"Mars"},{"name":"Hora 11","start":"17:20","end":"18:20","startHours":17.330505320470028,"endHours":18.330505320470028,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"18:20","end":"19:20","startHours":18.330505320470028,"endHours":19.330505320470028,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"19:20","end":"20:20","startHours":19.330505320470028,"endHours":20.330505320470028,"planetary_lord":"Moon"},{"name":"Hora 14","start":"20:20","end":"21:20","startHours":20.330505320470028,"endHours":21.330505320470028,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"21:20","end":"22:20","startHours":21.330505320470028,"endHours":22.330505320470028,"planetary_lord":"Venus"},{"name":"Hora 16","start":"22:20","end":"23:20","startHours":22.330505320470028,"endHours":23.330505320470028,"planetary_lord":"Sun"},{"name":"Hora 17","start":"23:20","end":"00:20","startHours":23.330505320470028,"endHours":24.330505320470028,"planetary_lord":"Mars"},{"name":"Hora 18","start":"00:20","end":"01:20","startHours":24.330505320470028,"endHours":25.330505320470028,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"01:20","end":"02:20","startHours":25.330505320470028,"endHours":26.330505320470028,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"02:20","end":"03:20","startHours":26.330505320470028,"endHours":27.330505320470028,"planetary_lord":"Moon"},{"name":"Hora 21","start":"03:20","end":"04:20","startHours":27.330505320470028,"endHours":28.330505320470028,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"04:20","end":"05:20","startHours":28.330505320470028,"endHours":29.330505320470028,"planetary_lord":"Venus"},{"name":"Hora 23","start":"05:20","end":"06:20","startHours":29.330505320470028,"endHours":30.330505320470028,"planetary_lord":"Sun"},{"name":"Hora 24","start":"06:20","end":"07:20","startHours":30.330505320470028,"endHours":31.330505320470028,"planetary_lord":"Mars"}],"taraBala":{"favorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Svātī","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"unfavorable_nakshatras":["Aśvinī","Punarvasu","Puṣya","Aśleṣā","Maghā","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Kanyā","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Karka","Siṃha","Vṛścika","Dhanu","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"East","rahuVasa":"South-East","anandadiYoga":{"name":"Amṛta","quality":"Auspicious"},"tropicalRitu":"Hemanta (Pre-winter) (tropical)","vedicRitu":"Śarad (Autumn)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-22.569069658243702,"eotMinutes":7.723696523337262,"ayanamsa":23.4888}},"calendars":{"vikram_samvat":2030,"vikram_samvatsara":"Akṣaya","saka_samvat":1895,"saka_samvatsara":"Pramādī","bengali_samvat":1380,"malayalam_era":1149,"nanakshahi_year":504,"lunar_month":"Mārgaśīrṣa","lunar_month_paksha_full":"Mārgaśīrṣa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Mārgaśīrṣa","lunar_month_amanta":"Mārgaśīrṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Vṛścika (Kārttikai)","ritu":"Hemanta (Pre-winter)","display_summary":"Mārgaśīrṣa Śukla Dvādaśī · Vikram 2030 Akṣaya · Śaka 1895 Pramādī"},"festivals":[],"todays_walk":{"walk":{"id":"shukra-walk","name":"Śukra Walk","name_sanskrit":"शुक्र यात्रा","type":"graha","description":"Beauty + creativity in dharma + BG 10.36.","step_count":5,"url":"/walk/shukra-walk"},"reason":"Śukravāra (Friday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3101-02-18","event":"Kali Yuga Epoch","chart_id":"kali-yuga-epoch","shared_marker":"same Aśvinī","url":"/day/-3101-02-18","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 December 7, 1973 CE · Phoenix, USA · Vidhyamitra","description":"December 7, 1973 CE for Phoenix, USA: Śukla Dvādaśī, sūryodaya 07:20, sūryāsta 17:21.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/phoenix/1973-12-07","hreflang_alternates":{"en":"https://vidhyamitra.com/city/phoenix/1973-12-07","sa":"https://sa.vidhyamitra.com/city/phoenix/1973-12-07","hi":"https://hi.vidhyamitra.com/city/phoenix/1973-12-07","x-default":"https://vidhyamitra.com/city/phoenix/1973-12-07"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T18:58:20.802Z","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":"2026-06-01T18:58:20.802Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T18:58:20.802Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}