{"id":"vidhyamitra:city-day:chicago:2018-12-08:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/chicago/2018-12-08","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2018-12-08","date_display":"December 8, 2018 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":2018,"month":12,"day":8,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458460.770833,"kali_year":5120,"ahargana":1869995.2708,"sun":{"sidereal_longitude":231.2743,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":241.6873,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":10.413,"elapsed_within_tithi_degrees":10.413},"nakshatra":{"number":19,"name":"Mūla","pada":1,"moon_longitude":241.6873,"elapsed_within_degrees":1.6873},"yoga":{"number":9,"name":"Śūla","sum_longitude":112.9616},"karana":{"half_tithi_index":1,"name":"Bava"},"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":2018,"month":12,"day":8,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2458460.770833,"ahargana":1869995.2708,"kali_year":5120,"ayanamsa_lahiri":24.1175,"grahas":{"sun":{"sidereal_longitude":231.766977,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":240.173677,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":false,"latitude":2.7041},"mars":{"sidereal_longitude":319.628277,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":212.90897700000005,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":16,"name":"Viśākhā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":222.40027699999996,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":188.815477,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":254.37637699999993,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":98.6515,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":278.6515,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"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":2018,"month":12,"day":8,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458460.770833,"kali_year":5120,"ahargana":1869995.2708,"sun":{"sidereal_longitude":231.2743,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":241.6873,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":10.413,"elapsed_within_tithi_degrees":10.413},"nakshatra":{"number":19,"name":"Mūla","pada":1,"moon_longitude":241.6873,"elapsed_within_degrees":1.6873},"yoga":{"number":9,"name":"Śūla","sum_longitude":112.9616},"karana":{"half_tithi_index":1,"name":"Bava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.704,"elongation":10.413},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.704,"opposition_distance":169.587}},"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":"07:06","sunsetLocal":"16:20","solarNoonLocal":"11:43","dayLengthHours":9.238432045541508,"dayLengthDisplay":"9 Hours 14 Mins 18 Secs","nightLengthDisplay":"14 Hours 45 Mins 42 Secs","moonriseLocal":"07:44","moonsetLocal":"16:50","rahuKala":{"name":"Rāhu Kāla","start":"09:25","end":"10:34","startHours":9.410741570175727,"endHours":10.565545575868414,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:53","end":"14:02","startHours":12.875153587253791,"endHours":14.02995759294648,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:06","end":"08:15","startHours":7.101133558790349,"endHours":8.255937564483038,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:15","end":"09:34","startHours":9.256767702750034,"endHours":9.564715437601418,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:29","end":"07:44","startHours":7.486068227354578,"endHours":7.732426415235685,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:25","end":"12:02","startHours":11.412401846709718,"endHours":12.028297316412486,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:52","end":"06:29","startHours":5.869342619384815,"endHours":6.485238089087582,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:20","end":"07:06","startHours":6.33126422166189,"endHours":7.101133558790349,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:16","end":"13:53","startHours":13.260088255818022,"endHours":13.87598372552079,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"16:08","end":"16:32","startHours":16.139565604331857,"endHours":16.539565604331855,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"16:20","end":"16:43","startHours":16.339565604331856,"endHours":16.724500272896087,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"16:05","end":"17:50","startHours":16.089565604331856,"endHours":17.839565604331856,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:25","end":"00:02","startHours":23.41240184670972,"endHours":24.028297316412484,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"07:06","end":"08:15","startHours":7.101133558790349,"endHours":8.255937564483038,"quality":"inauspicious"},{"name":"Śubha","start":"08:15","end":"09:25","startHours":8.255937564483038,"endHours":9.410741570175727,"quality":"auspicious"},{"name":"Roga","start":"09:25","end":"10:34","startHours":9.410741570175727,"endHours":10.565545575868414,"quality":"inauspicious"},{"name":"Udveg","start":"10:34","end":"11:43","startHours":10.565545575868414,"endHours":11.720349581561102,"quality":"inauspicious"},{"name":"Chala","start":"11:43","end":"12:53","startHours":11.720349581561102,"endHours":12.875153587253791,"quality":"neutral"},{"name":"Labha","start":"12:53","end":"14:02","startHours":12.875153587253791,"endHours":14.02995759294648,"quality":"auspicious"},{"name":"Amṛta","start":"14:02","end":"15:11","startHours":14.02995759294648,"endHours":15.184761598639167,"quality":"auspicious"},{"name":"Kāla","start":"15:11","end":"16:20","startHours":15.184761598639167,"endHours":16.339565604331856,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"16:20","end":"18:11","startHours":16.339565604331856,"endHours":18.184761598639167,"quality":"auspicious"},{"name":"Amṛta","start":"18:11","end":"20:02","startHours":18.184761598639167,"endHours":20.02995759294648,"quality":"auspicious"},{"name":"Kāla","start":"20:02","end":"21:53","startHours":20.02995759294648,"endHours":21.87515358725379,"quality":"inauspicious"},{"name":"Śubha","start":"21:53","end":"23:43","startHours":21.87515358725379,"endHours":23.720349581561102,"quality":"auspicious"},{"name":"Roga","start":"23:43","end":"01:34","startHours":23.720349581561102,"endHours":25.565545575868413,"quality":"inauspicious"},{"name":"Udveg","start":"01:34","end":"03:25","startHours":25.565545575868413,"endHours":27.410741570175723,"quality":"inauspicious"},{"name":"Chala","start":"03:25","end":"05:15","startHours":27.410741570175723,"endHours":29.255937564483038,"quality":"neutral"},{"name":"Labha","start":"05:15","end":"07:06","startHours":29.255937564483038,"endHours":31.101133558790348,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:06","end":"08:06","startHours":7.101133558790349,"endHours":8.101133558790348,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"08:06","end":"09:06","startHours":8.101133558790348,"endHours":9.101133558790348,"planetary_lord":"Moon"},{"name":"Hora 3","start":"09:06","end":"10:06","startHours":9.101133558790348,"endHours":10.101133558790348,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"10:06","end":"11:06","startHours":10.101133558790348,"endHours":11.101133558790348,"planetary_lord":"Venus"},{"name":"Hora 5","start":"11:06","end":"12:06","startHours":11.101133558790348,"endHours":12.101133558790348,"planetary_lord":"Sun"},{"name":"Hora 6","start":"12:06","end":"13:06","startHours":12.101133558790348,"endHours":13.101133558790348,"planetary_lord":"Mars"},{"name":"Hora 7","start":"13:06","end":"14:06","startHours":13.101133558790348,"endHours":14.101133558790348,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"14:06","end":"15:06","startHours":14.101133558790348,"endHours":15.101133558790348,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"15:06","end":"16:06","startHours":15.101133558790348,"endHours":16.101133558790348,"planetary_lord":"Moon"},{"name":"Hora 10","start":"16:06","end":"17:06","startHours":16.101133558790348,"endHours":17.101133558790348,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"17:06","end":"18:06","startHours":17.101133558790348,"endHours":18.101133558790348,"planetary_lord":"Venus"},{"name":"Hora 12","start":"18:06","end":"19:06","startHours":18.101133558790348,"endHours":19.101133558790348,"planetary_lord":"Sun"},{"name":"Hora 13","start":"19:06","end":"20:06","startHours":19.101133558790348,"endHours":20.101133558790348,"planetary_lord":"Mars"},{"name":"Hora 14","start":"20:06","end":"21:06","startHours":20.101133558790348,"endHours":21.101133558790348,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"21:06","end":"22:06","startHours":21.101133558790348,"endHours":22.101133558790348,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"22:06","end":"23:06","startHours":22.101133558790348,"endHours":23.101133558790348,"planetary_lord":"Moon"},{"name":"Hora 17","start":"23:06","end":"00:06","startHours":23.101133558790348,"endHours":24.101133558790348,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"00:06","end":"01:06","startHours":24.101133558790348,"endHours":25.101133558790348,"planetary_lord":"Venus"},{"name":"Hora 19","start":"01:06","end":"02:06","startHours":25.101133558790348,"endHours":26.101133558790348,"planetary_lord":"Sun"},{"name":"Hora 20","start":"02:06","end":"03:06","startHours":26.101133558790348,"endHours":27.101133558790348,"planetary_lord":"Mars"},{"name":"Hora 21","start":"03:06","end":"04:06","startHours":27.101133558790348,"endHours":28.101133558790348,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"04:06","end":"05:06","startHours":28.101133558790348,"endHours":29.101133558790348,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"05:06","end":"06:06","startHours":29.101133558790348,"endHours":30.101133558790348,"planetary_lord":"Moon"},{"name":"Hora 24","start":"06:06","end":"07:06","startHours":30.101133558790348,"endHours":31.101133558790348,"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","Mithuna","Kanyā","Tulā","Dhanu","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Makara","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"East","rahuVasa":"East","anandadiYoga":{"name":"Lumba","quality":"Auspicious"},"drikRitu":"Hemanta (Pre-winter) (Drik)","vedicRitu":"Śarad (Autumn)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-22.6886520910597,"eotMinutes":7.298225106333945,"ayanamsa":24.1175}},"calendars":{"vikram_samvat":2075,"vikram_samvatsara":"Virodhakṛt","saka_samvat":1940,"saka_samvatsara":"Vilambī","bengali_samvat":1425,"malayalam_era":1194,"nanakshahi_year":549,"lunar_month":"Mārgaśīrṣa","lunar_month_paksha_full":"Mārgaśīrṣa Śukla Pakṣa","solar_month":"Vṛścika (Kārttikai)","ritu":"Hemanta (Pre-winter)","display_summary":"Mārgaśīrṣa Śukla Pratipada · Vikram 2075 Virodhakṛt · Śaka 1940 Vilambī"},"festivals":[{"id":"vrischika-sankranti","name":"Vṛścika Saṅkrānti","name_sanskrit":"वृश्चिक सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Scorpio.","vrata":false,"detection":{"sun_rashi":"Vṛścika"},"precedence":5}],"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":[]},"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 December 8, 2018 CE · Chicago, USA · Vidhyamitra","description":"December 8, 2018 CE for Chicago, USA: Śukla Pratipada, sūryodaya 07:06, sūryāsta 16:20.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/chicago/2018-12-08","hreflang_alternates":{"en":"https://vidhyamitra.com/city/chicago/2018-12-08","sa":"https://sa.vidhyamitra.com/city/chicago/2018-12-08","hi":"https://hi.vidhyamitra.com/city/chicago/2018-12-08","x-default":"https://vidhyamitra.com/city/chicago/2018-12-08"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T14:48:16.262Z","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":"2026-05-15T14:48:16.262Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T14:48:16.262Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}