{"id":"vidhyamitra:city-day:chicago:1981-09-19:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/chicago/1981-09-19","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-09-19","date_display":"September 19, 1981 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":1981,"month":9,"day":19,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444866.770833,"kali_year":5083,"ahargana":1856401.2708,"sun":{"sidereal_longitude":151.7341,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":35.7959,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":21,"name":"Ṣaṣṭhī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ṣaṣṭhī","elongation_degrees":244.0617,"elapsed_within_tithi_degrees":4.0617},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3,"moon_longitude":35.7959,"elapsed_within_degrees":9.1292},"yoga":{"number":15,"name":"Vajra","sum_longitude":187.53},"karana":{"half_tithi_index":40,"name":"Gara"},"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":1981,"month":9,"day":19,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444866.770833,"ahargana":1856401.2708,"kali_year":5083,"ayanamsa_lahiri":23.5976,"grahas":{"sun":{"sidereal_longitude":152.42436799999996,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":38.809267999999975,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4},"retrograde":false,"latitude":-4.0134},"mars":{"sidereal_longitude":107.31736799999999,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":178.48246800000004,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":172.08986800000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":false},"venus":{"sidereal_longitude":193.77236800000003,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":166.84096799999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":98.927,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":278.927,"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":1981,"month":9,"day":19,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444866.770833,"kali_year":5083,"ahargana":1856401.2708,"sun":{"sidereal_longitude":151.7341,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":35.7959,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":21,"name":"Ṣaṣṭhī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ṣaṣṭhī","elongation_degrees":244.0617,"elapsed_within_tithi_degrees":4.0617},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3,"moon_longitude":35.7959,"elapsed_within_degrees":9.1292},"yoga":{"number":15,"name":"Vajra","sum_longitude":187.53},"karana":{"half_tithi_index":40,"name":"Gara"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.013,"elongation":115.938},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.013,"opposition_distance":64.062}},"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":"05:33","sunsetLocal":"17:54","solarNoonLocal":"11:44","dayLengthHours":12.338388969287394,"dayLengthDisplay":"12 Hours 20 Mins 18 Secs","nightLengthDisplay":"11 Hours 39 Mins 42 Secs","moonriseLocal":"20:47","moonsetLocal":"11:32","rahuKala":{"name":"Rāhu Kāla","start":"08:38","end":"10:11","startHours":8.641068156220655,"endHours":10.183366777381579,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:16","end":"14:49","startHours":13.267964019703427,"endHours":14.810262640864352,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"05:33","end":"07:06","startHours":5.5564709138988055,"endHours":7.09876953505973,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:26","end":"08:51","startHours":8.435428340065865,"endHours":8.846707972375444,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:04","end":"06:24","startHours":6.070570454285781,"endHours":6.399594160133445,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:19","end":"12:08","startHours":11.314385766232924,"endHours":12.136945030852083,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:55","end":"04:44","startHours":3.9113523846604865,"endHours":4.733911649279646,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:32","end":"05:33","startHours":4.528271833124856,"endHours":5.5564709138988055,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:47","end":"14:36","startHours":13.782063560090403,"endHours":14.604622824709564,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:42","end":"18:06","startHours":17.6948598831862,"endHours":18.0948598831862,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:54","end":"18:25","startHours":17.8948598831862,"endHours":18.408959423573176,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:39","end":"19:24","startHours":17.6448598831862,"endHours":19.3948598831862,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:19","end":"00:08","startHours":23.314385766232924,"endHours":24.136945030852083,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"05:33","end":"07:06","startHours":5.5564709138988055,"endHours":7.09876953505973,"quality":"inauspicious"},{"name":"Śubha","start":"07:06","end":"08:38","startHours":7.09876953505973,"endHours":8.641068156220655,"quality":"auspicious"},{"name":"Roga","start":"08:38","end":"10:11","startHours":8.641068156220655,"endHours":10.183366777381579,"quality":"inauspicious"},{"name":"Udveg","start":"10:11","end":"11:44","startHours":10.183366777381579,"endHours":11.725665398542503,"quality":"inauspicious"},{"name":"Chala","start":"11:44","end":"13:16","startHours":11.725665398542503,"endHours":13.267964019703427,"quality":"neutral"},{"name":"Labha","start":"13:16","end":"14:49","startHours":13.267964019703427,"endHours":14.810262640864352,"quality":"auspicious"},{"name":"Amṛta","start":"14:49","end":"16:21","startHours":14.810262640864352,"endHours":16.352561262025276,"quality":"auspicious"},{"name":"Kāla","start":"16:21","end":"17:54","startHours":16.352561262025276,"endHours":17.8948598831862,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"17:54","end":"19:21","startHours":17.8948598831862,"endHours":19.352561262025276,"quality":"auspicious"},{"name":"Amṛta","start":"19:21","end":"20:49","startHours":19.352561262025276,"endHours":20.81026264086435,"quality":"auspicious"},{"name":"Kāla","start":"20:49","end":"22:16","startHours":20.81026264086435,"endHours":22.267964019703427,"quality":"inauspicious"},{"name":"Śubha","start":"22:16","end":"23:44","startHours":22.267964019703427,"endHours":23.725665398542503,"quality":"auspicious"},{"name":"Roga","start":"23:44","end":"01:11","startHours":23.725665398542503,"endHours":25.18336677738158,"quality":"inauspicious"},{"name":"Udveg","start":"01:11","end":"02:38","startHours":25.18336677738158,"endHours":26.641068156220655,"quality":"inauspicious"},{"name":"Chala","start":"02:38","end":"04:06","startHours":26.641068156220655,"endHours":28.09876953505973,"quality":"neutral"},{"name":"Labha","start":"04:06","end":"05:33","startHours":28.09876953505973,"endHours":29.556470913898806,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:33","end":"06:33","startHours":5.5564709138988055,"endHours":6.5564709138988055,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"06:33","end":"07:33","startHours":6.5564709138988055,"endHours":7.5564709138988055,"planetary_lord":"Moon"},{"name":"Hora 3","start":"07:33","end":"08:33","startHours":7.5564709138988055,"endHours":8.556470913898806,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"08:33","end":"09:33","startHours":8.556470913898806,"endHours":9.556470913898806,"planetary_lord":"Venus"},{"name":"Hora 5","start":"09:33","end":"10:33","startHours":9.556470913898806,"endHours":10.556470913898806,"planetary_lord":"Sun"},{"name":"Hora 6","start":"10:33","end":"11:33","startHours":10.556470913898806,"endHours":11.556470913898806,"planetary_lord":"Mars"},{"name":"Hora 7","start":"11:33","end":"12:33","startHours":11.556470913898806,"endHours":12.556470913898806,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"12:33","end":"13:33","startHours":12.556470913898806,"endHours":13.556470913898806,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"13:33","end":"14:33","startHours":13.556470913898806,"endHours":14.556470913898806,"planetary_lord":"Moon"},{"name":"Hora 10","start":"14:33","end":"15:33","startHours":14.556470913898806,"endHours":15.556470913898806,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"15:33","end":"16:33","startHours":15.556470913898806,"endHours":16.556470913898806,"planetary_lord":"Venus"},{"name":"Hora 12","start":"16:33","end":"17:33","startHours":16.556470913898806,"endHours":17.556470913898806,"planetary_lord":"Sun"},{"name":"Hora 13","start":"17:33","end":"18:33","startHours":17.556470913898806,"endHours":18.556470913898806,"planetary_lord":"Mars"},{"name":"Hora 14","start":"18:33","end":"19:33","startHours":18.556470913898806,"endHours":19.556470913898806,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"19:33","end":"20:33","startHours":19.556470913898806,"endHours":20.556470913898806,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"20:33","end":"21:33","startHours":20.556470913898806,"endHours":21.556470913898806,"planetary_lord":"Moon"},{"name":"Hora 17","start":"21:33","end":"22:33","startHours":21.556470913898806,"endHours":22.556470913898806,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"22:33","end":"23:33","startHours":22.556470913898806,"endHours":23.556470913898806,"planetary_lord":"Venus"},{"name":"Hora 19","start":"23:33","end":"00:33","startHours":23.556470913898806,"endHours":24.556470913898806,"planetary_lord":"Sun"},{"name":"Hora 20","start":"00:33","end":"01:33","startHours":24.556470913898806,"endHours":25.556470913898806,"planetary_lord":"Mars"},{"name":"Hora 21","start":"01:33","end":"02:33","startHours":25.556470913898806,"endHours":26.556470913898806,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"02:33","end":"03:33","startHours":26.556470913898806,"endHours":27.556470913898806,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"03:33","end":"04:33","startHours":27.556470913898806,"endHours":28.556470913898806,"planetary_lord":"Moon"},{"name":"Hora 24","start":"04:33","end":"05:33","startHours":28.556470913898806,"endHours":29.556470913898806,"planetary_lord":"Mercury"}],"taraBala":{"favorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Hasta","Citrā","Svātī","Viśākhā","Anurādhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Karka","Tulā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Siṃha","Kanyā","Dhanu","Makara"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-East","rahuVasa":"East","anandadiYoga":{"name":"Sushira","quality":"Auspicious"},"tropicalRitu":"Varṣā (Monsoon)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":1.581122277279312,"eotMinutes":6.979276087449932,"ayanamsa":23.5976}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Āśvina","lunar_month_amanta":"Bhādrapada","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Kṛṣṇa Ṣaṣṭhī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"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":"-3137-10-04","event":"Mahābhārata Day 1 (Bhagavad Gītā delivered)","chart_id":"krishna","shared_marker":"same Kṛttikā","url":"/day/-3137-10-04","relevance":0.5},{"historical_date":"-3137-12-25","event":"Bhīṣma's Mahaprasthan","chart_id":"bhishma","shared_marker":"same Kṛttikā","url":"/day/-3137-12-25","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 September 19, 1981 CE · Chicago, USA · Vidhyamitra","description":"September 19, 1981 CE for Chicago, USA: Kṛṣṇa Ṣaṣṭhī, sūryodaya 05:33, sūryāsta 17:54.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/chicago/1981-09-19","hreflang_alternates":{"en":"https://vidhyamitra.com/city/chicago/1981-09-19","sa":"https://sa.vidhyamitra.com/city/chicago/1981-09-19","hi":"https://hi.vidhyamitra.com/city/chicago/1981-09-19","x-default":"https://vidhyamitra.com/city/chicago/1981-09-19"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-03T03:50:02.414Z","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":"2026-06-03T03:50:02.414Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-03T03:50:02.414Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}