{"id":"vidhyamitra:city-day:chicago:1966-01-01:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/chicago/1966-01-01","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1966-01-01","date_display":"January 1, 1966 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":1966,"month":1,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2439126.770833,"kali_year":5067,"ahargana":1850661.2708,"sun":{"sidereal_longitude":256.6467,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":0.3358,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":9,"name":"Navamī","paksha":"Śukla","full_name":"Śukla Navamī","elongation_degrees":103.6891,"elapsed_within_tithi_degrees":7.6891},"nakshatra":{"number":1,"name":"Aśvinī","pada":1,"moon_longitude":0.3358,"elapsed_within_degrees":0.3358},"yoga":{"number":20,"name":"Śiva","sum_longitude":256.9825},"karana":{"half_tithi_index":17,"name":"Kaulava"},"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":1966,"month":1,"day":1,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2439126.770833,"ahargana":1850661.2708,"kali_year":5067,"ayanamsa_lahiri":23.378,"grahas":{"sun":{"sidereal_longitude":256.7987780000001,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":357.715278,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false,"latitude":-3.0514},"mars":{"sidereal_longitude":284.0224780000001,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":237.50667799999997,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":61.63727799999998,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":3},"retrograde":true},"venus":{"sidereal_longitude":290.48857799999996,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":true},"saturn":{"sidereal_longitude":319.727578,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":43.0599,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":223.0599,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","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":1966,"month":1,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2439126.770833,"kali_year":5067,"ahargana":1850661.2708,"sun":{"sidereal_longitude":256.6467,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":0.3358,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":9,"name":"Navamī","paksha":"Śukla","full_name":"Śukla Navamī","elongation_degrees":103.6891,"elapsed_within_tithi_degrees":7.6891},"nakshatra":{"number":1,"name":"Aśvinī","pada":1,"moon_longitude":0.3358,"elapsed_within_degrees":0.3358},"yoga":{"number":20,"name":"Śiva","sum_longitude":256.9825},"karana":{"half_tithi_index":17,"name":"Kaulava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.051,"elongation":103.689},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.051,"opposition_distance":76.311}},"eclipse_window_40days":[]},"city":{"slug":"chicago","name":"Chicago, USA","lat":41.8781,"lon":-87.6298,"tz_offset_hours":-6,"country":"US","tier":"diaspora"},"tier2":{"city":{"slug":"chicago","name":"Chicago, USA","lat":41.8781,"lon":-87.6298,"tz_offset_hours":-6,"country":"US","tier":"diaspora"},"sunriseLocal":"07:19","sunsetLocal":"16:30","solarNoonLocal":"11:54","dayLengthHours":9.18497658523429,"dayLengthDisplay":"9 Hours 11 Mins 06 Secs","nightLengthDisplay":"14 Hours 48 Mins 54 Secs","moonriseLocal":"12:05","moonsetLocal":"01:11","rahuKala":{"name":"Rāhu Kāla","start":"09:36","end":"10:45","startHours":9.607495492414696,"endHours":10.755617565568983,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:03","end":"14:12","startHours":13.051861711877555,"endHours":14.199983785031842,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:19","end":"08:28","startHours":7.311251346106124,"endHours":8.45937341926041,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:27","end":"09:46","startHours":9.454412549327458,"endHours":9.760578435501934,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:42","end":"07:56","startHours":7.693958703824219,"endHours":7.9388914127638,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:36","end":"12:13","startHours":11.597573752548794,"endHours":12.209905524897746,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"06:05","end":"06:42","startHours":6.086587801408219,"endHours":6.698919573757171,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:33","end":"07:19","startHours":6.545836630669933,"endHours":7.311251346106124,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:26","end":"14:03","startHours":13.43456906959565,"endHours":14.046900841944602,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"16:18","end":"16:42","startHours":16.296227931340415,"endHours":16.696227931340413,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"16:30","end":"16:53","startHours":16.496227931340414,"endHours":16.87893528905851,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"16:15","end":"18:00","startHours":16.246227931340414,"endHours":17.996227931340414,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:36","end":"00:13","startHours":23.597573752548794,"endHours":24.209905524897746,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"07:19","end":"08:28","startHours":7.311251346106124,"endHours":8.45937341926041,"quality":"inauspicious"},{"name":"Śubha","start":"08:28","end":"09:36","startHours":8.45937341926041,"endHours":9.607495492414696,"quality":"auspicious"},{"name":"Roga","start":"09:36","end":"10:45","startHours":9.607495492414696,"endHours":10.755617565568983,"quality":"inauspicious"},{"name":"Udveg","start":"10:45","end":"11:54","startHours":10.755617565568983,"endHours":11.90373963872327,"quality":"inauspicious"},{"name":"Chala","start":"11:54","end":"13:03","startHours":11.90373963872327,"endHours":13.051861711877555,"quality":"neutral"},{"name":"Labha","start":"13:03","end":"14:12","startHours":13.051861711877555,"endHours":14.199983785031842,"quality":"auspicious"},{"name":"Amṛta","start":"14:12","end":"15:21","startHours":14.199983785031842,"endHours":15.348105858186127,"quality":"auspicious"},{"name":"Kāla","start":"15:21","end":"16:30","startHours":15.348105858186127,"endHours":16.496227931340414,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"16:30","end":"18:21","startHours":16.496227931340414,"endHours":18.348105858186127,"quality":"auspicious"},{"name":"Amṛta","start":"18:21","end":"20:12","startHours":18.348105858186127,"endHours":20.19998378503184,"quality":"auspicious"},{"name":"Kāla","start":"20:12","end":"22:03","startHours":20.19998378503184,"endHours":22.051861711877557,"quality":"inauspicious"},{"name":"Śubha","start":"22:03","end":"23:54","startHours":22.051861711877557,"endHours":23.90373963872327,"quality":"auspicious"},{"name":"Roga","start":"23:54","end":"01:45","startHours":23.90373963872327,"endHours":25.755617565568983,"quality":"inauspicious"},{"name":"Udveg","start":"01:45","end":"03:36","startHours":25.755617565568983,"endHours":27.607495492414696,"quality":"inauspicious"},{"name":"Chala","start":"03:36","end":"05:28","startHours":27.607495492414696,"endHours":29.45937341926041,"quality":"neutral"},{"name":"Labha","start":"05:28","end":"07:19","startHours":29.45937341926041,"endHours":31.311251346106125,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:19","end":"08:19","startHours":7.311251346106124,"endHours":8.311251346106124,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"08:19","end":"09:19","startHours":8.311251346106124,"endHours":9.311251346106124,"planetary_lord":"Moon"},{"name":"Hora 3","start":"09:19","end":"10:19","startHours":9.311251346106124,"endHours":10.311251346106124,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"10:19","end":"11:19","startHours":10.311251346106124,"endHours":11.311251346106124,"planetary_lord":"Venus"},{"name":"Hora 5","start":"11:19","end":"12:19","startHours":11.311251346106124,"endHours":12.311251346106124,"planetary_lord":"Sun"},{"name":"Hora 6","start":"12:19","end":"13:19","startHours":12.311251346106124,"endHours":13.311251346106124,"planetary_lord":"Mars"},{"name":"Hora 7","start":"13:19","end":"14:19","startHours":13.311251346106124,"endHours":14.311251346106124,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"14:19","end":"15:19","startHours":14.311251346106124,"endHours":15.311251346106124,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"15:19","end":"16:19","startHours":15.311251346106124,"endHours":16.311251346106125,"planetary_lord":"Moon"},{"name":"Hora 10","start":"16:19","end":"17:19","startHours":16.311251346106125,"endHours":17.311251346106125,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"17:19","end":"18:19","startHours":17.311251346106125,"endHours":18.311251346106125,"planetary_lord":"Venus"},{"name":"Hora 12","start":"18:19","end":"19:19","startHours":18.311251346106125,"endHours":19.311251346106125,"planetary_lord":"Sun"},{"name":"Hora 13","start":"19:19","end":"20:19","startHours":19.311251346106125,"endHours":20.311251346106125,"planetary_lord":"Mars"},{"name":"Hora 14","start":"20:19","end":"21:19","startHours":20.311251346106125,"endHours":21.311251346106125,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"21:19","end":"22:19","startHours":21.311251346106125,"endHours":22.311251346106125,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"22:19","end":"23:19","startHours":22.311251346106125,"endHours":23.311251346106125,"planetary_lord":"Moon"},{"name":"Hora 17","start":"23:19","end":"00:19","startHours":23.311251346106125,"endHours":24.311251346106125,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"00:19","end":"01:19","startHours":24.311251346106125,"endHours":25.311251346106125,"planetary_lord":"Venus"},{"name":"Hora 19","start":"01:19","end":"02:19","startHours":25.311251346106125,"endHours":26.311251346106125,"planetary_lord":"Sun"},{"name":"Hora 20","start":"02:19","end":"03:19","startHours":26.311251346106125,"endHours":27.311251346106125,"planetary_lord":"Mars"},{"name":"Hora 21","start":"03:19","end":"04:19","startHours":27.311251346106125,"endHours":28.311251346106125,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"04:19","end":"05:19","startHours":28.311251346106125,"endHours":29.311251346106125,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"05:19","end":"06:19","startHours":29.311251346106125,"endHours":30.311251346106125,"planetary_lord":"Moon"},{"name":"Hora 24","start":"06:19","end":"07:19","startHours":30.311251346106125,"endHours":31.311251346106125,"planetary_lord":"Mercury"}],"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":["Vṛṣabha","Siṃha","Kanyā","Dhanu","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Karka","Tulā","Vṛścika","Kumbha"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-West","rahuVasa":"East","anandadiYoga":{"name":"Rākṣasa","quality":"Inauspicious"},"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":-23.046312844331567,"eotMinutes":-3.705178323396069,"ayanamsa":23.378}},"calendars":{"vikram_samvat":2023,"vikram_samvatsara":"Siddhārthī","saka_samvat":1888,"saka_samvatsara":"Parābhava","bengali_samvat":1373,"malayalam_era":1142,"nanakshahi_year":497,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Pauṣa","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":"Hemanta (Pre-winter)","display_summary":"Pauṣa Śukla Navamī · Vikram 2023 Siddhārthī · Śaka 1888 Parābhava"},"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":[{"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},{"historical_date":"-1626101-04-03","event":"Bhagavān Rāma's birth at Ayodhyā","chart_id":"rama","shared_marker":"same Śukla Navamī","url":"/day/-1626101-04-03","relevance":0.5}]},"validity":{"eternal":false,"location_specific":"chicago"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga January 1, 1966 CE · Chicago, USA · Vidhyamitra","description":"January 1, 1966 CE for Chicago, USA: Śukla Navamī, sūryodaya 07:19, sūryāsta 16:30.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/chicago/1966-01-01","hreflang_alternates":{"en":"https://vidhyamitra.com/city/chicago/1966-01-01","sa":"https://sa.vidhyamitra.com/city/chicago/1966-01-01","hi":"https://hi.vidhyamitra.com/city/chicago/1966-01-01","x-default":"https://vidhyamitra.com/city/chicago/1966-01-01"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-03T10:14:16.121Z","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":"2026-06-03T10:14:16.121Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-03T10:14:16.121Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}