{"id":"vidhyamitra:city-day:chicago:1981-09-29:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/chicago/1981-09-29","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-09-29","date_display":"September 29, 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":29,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444876.770833,"kali_year":5083,"ahargana":1856411.2708,"sun":{"sidereal_longitude":161.5174,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":173.7077,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":2,"name":"Dvitīyā","paksha":"Śukla","full_name":"Śukla Dvitīyā","elongation_degrees":12.1903,"elapsed_within_tithi_degrees":0.1903},"nakshatra":{"number":14,"name":"Citrā","pada":1,"moon_longitude":173.7077,"elapsed_within_degrees":0.3744},"yoga":{"number":26,"name":"Indra","sum_longitude":335.2251},"karana":{"half_tithi_index":2,"name":"Bālava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"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":29,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444876.770833,"ahargana":1856411.2708,"kali_year":5083,"ayanamsa_lahiri":23.598,"grahas":{"sun":{"sidereal_longitude":162.21818600000006,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"moon":{"sidereal_longitude":172.14478600000007,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":false,"latitude":4.3526},"mars":{"sidereal_longitude":113.472286,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":188.006486,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":174.224286,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":205.33788600000003,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":168.05348600000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":98.3972,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":278.3972,"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":29,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444876.770833,"kali_year":5083,"ahargana":1856411.2708,"sun":{"sidereal_longitude":161.5174,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":173.7077,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":2,"name":"Dvitīyā","paksha":"Śukla","full_name":"Śukla Dvitīyā","elongation_degrees":12.1903,"elapsed_within_tithi_degrees":0.1903},"nakshatra":{"number":14,"name":"Citrā","pada":1,"moon_longitude":173.7077,"elapsed_within_degrees":0.3744},"yoga":{"number":26,"name":"Indra","sum_longitude":335.2251},"karana":{"half_tithi_index":2,"name":"Bālava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.353,"elongation":12.19},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.353,"opposition_distance":167.81}},"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":"05:44","sunsetLocal":"17:36","solarNoonLocal":"11:40","dayLengthHours":11.87299692841087,"dayLengthDisplay":"11 Hours 52 Mins 23 Secs","nightLengthDisplay":"12 Hours 07 Mins 37 Secs","moonriseLocal":"06:39","moonsetLocal":"18:01","rahuKala":{"name":"Rāhu Kāla","start":"14:38","end":"16:07","startHours":14.634976626039247,"endHours":16.119101242090608,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"08:42","end":"10:11","startHours":8.698478161833812,"endHours":10.182602777885172,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"11:40","end":"13:09","startHours":11.66672739393653,"endHours":13.15085200998789,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:30","end":"08:54","startHours":8.500594879693631,"endHours":8.896361443973994,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:13","end":"06:32","startHours":6.224937135081548,"endHours":6.541550386505838,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:16","end":"12:04","startHours":11.270960829656167,"endHours":12.062493958216892,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:09","end":"04:56","startHours":4.147162672609646,"endHours":4.93869580117037,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:44","end":"05:44","startHours":4.7408125190301895,"endHours":5.730228929731095,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:39","end":"14:26","startHours":13.645560215338342,"endHours":14.437093343899067,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:24","end":"17:48","startHours":17.403225858141965,"endHours":17.803225858141964,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:36","end":"18:06","startHours":17.603225858141965,"endHours":18.097934063492417,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:21","end":"19:06","startHours":17.353225858141965,"endHours":19.103225858141965,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:16","end":"00:04","startHours":23.27096082965617,"endHours":24.06249395821689,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"05:44","end":"07:13","startHours":5.730228929731095,"endHours":7.214353545782454,"quality":"inauspicious"},{"name":"Udveg","start":"07:13","end":"08:42","startHours":7.214353545782454,"endHours":8.698478161833812,"quality":"inauspicious"},{"name":"Chala","start":"08:42","end":"10:11","startHours":8.698478161833812,"endHours":10.182602777885172,"quality":"neutral"},{"name":"Labha","start":"10:11","end":"11:40","startHours":10.182602777885172,"endHours":11.66672739393653,"quality":"auspicious"},{"name":"Amṛta","start":"11:40","end":"13:09","startHours":11.66672739393653,"endHours":13.15085200998789,"quality":"auspicious"},{"name":"Kāla","start":"13:09","end":"14:38","startHours":13.15085200998789,"endHours":14.634976626039247,"quality":"inauspicious"},{"name":"Śubha","start":"14:38","end":"16:07","startHours":14.634976626039247,"endHours":16.119101242090608,"quality":"auspicious"},{"name":"Roga","start":"16:07","end":"17:36","startHours":16.119101242090608,"endHours":17.603225858141965,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"17:36","end":"19:07","startHours":17.603225858141965,"endHours":19.119101242090608,"quality":"inauspicious"},{"name":"Śubha","start":"19:07","end":"20:38","startHours":19.119101242090608,"endHours":20.634976626039247,"quality":"auspicious"},{"name":"Roga","start":"20:38","end":"22:09","startHours":20.634976626039247,"endHours":22.150852009987887,"quality":"inauspicious"},{"name":"Udveg","start":"22:09","end":"23:40","startHours":22.150852009987887,"endHours":23.66672739393653,"quality":"inauspicious"},{"name":"Chala","start":"23:40","end":"01:11","startHours":23.66672739393653,"endHours":25.182602777885172,"quality":"neutral"},{"name":"Labha","start":"01:11","end":"02:42","startHours":25.182602777885172,"endHours":26.698478161833812,"quality":"auspicious"},{"name":"Amṛta","start":"02:42","end":"04:13","startHours":26.698478161833812,"endHours":28.21435354578245,"quality":"auspicious"},{"name":"Kāla","start":"04:13","end":"05:44","startHours":28.21435354578245,"endHours":29.730228929731094,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:44","end":"06:44","startHours":5.730228929731095,"endHours":6.730228929731095,"planetary_lord":"Mars"},{"name":"Hora 2","start":"06:44","end":"07:44","startHours":6.730228929731095,"endHours":7.730228929731095,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"07:44","end":"08:44","startHours":7.730228929731095,"endHours":8.730228929731094,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"08:44","end":"09:44","startHours":8.730228929731094,"endHours":9.730228929731094,"planetary_lord":"Moon"},{"name":"Hora 5","start":"09:44","end":"10:44","startHours":9.730228929731094,"endHours":10.730228929731094,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"10:44","end":"11:44","startHours":10.730228929731094,"endHours":11.730228929731094,"planetary_lord":"Venus"},{"name":"Hora 7","start":"11:44","end":"12:44","startHours":11.730228929731094,"endHours":12.730228929731094,"planetary_lord":"Sun"},{"name":"Hora 8","start":"12:44","end":"13:44","startHours":12.730228929731094,"endHours":13.730228929731094,"planetary_lord":"Mars"},{"name":"Hora 9","start":"13:44","end":"14:44","startHours":13.730228929731094,"endHours":14.730228929731094,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"14:44","end":"15:44","startHours":14.730228929731094,"endHours":15.730228929731094,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"15:44","end":"16:44","startHours":15.730228929731094,"endHours":16.730228929731094,"planetary_lord":"Moon"},{"name":"Hora 12","start":"16:44","end":"17:44","startHours":16.730228929731094,"endHours":17.730228929731094,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"17:44","end":"18:44","startHours":17.730228929731094,"endHours":18.730228929731094,"planetary_lord":"Venus"},{"name":"Hora 14","start":"18:44","end":"19:44","startHours":18.730228929731094,"endHours":19.730228929731094,"planetary_lord":"Sun"},{"name":"Hora 15","start":"19:44","end":"20:44","startHours":19.730228929731094,"endHours":20.730228929731094,"planetary_lord":"Mars"},{"name":"Hora 16","start":"20:44","end":"21:44","startHours":20.730228929731094,"endHours":21.730228929731094,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"21:44","end":"22:44","startHours":21.730228929731094,"endHours":22.730228929731094,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"22:44","end":"23:44","startHours":22.730228929731094,"endHours":23.730228929731094,"planetary_lord":"Moon"},{"name":"Hora 19","start":"23:44","end":"00:44","startHours":23.730228929731094,"endHours":24.730228929731094,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"00:44","end":"01:44","startHours":24.730228929731094,"endHours":25.730228929731094,"planetary_lord":"Venus"},{"name":"Hora 21","start":"01:44","end":"02:44","startHours":25.730228929731094,"endHours":26.730228929731094,"planetary_lord":"Sun"},{"name":"Hora 22","start":"02:44","end":"03:44","startHours":26.730228929731094,"endHours":27.730228929731094,"planetary_lord":"Mars"},{"name":"Hora 23","start":"03:44","end":"04:44","startHours":27.730228929731094,"endHours":28.730228929731094,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"04:44","end":"05:44","startHours":28.730228929731094,"endHours":29.730228929731094,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Maghā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Mithuna","Karka","Kanyā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Tulā","Dhanu","Makara"]},"dishaShool":"North (Uttara)","chandraVasa":"North-West","rahuVasa":"North","anandadiYoga":{"name":"Mausala","quality":"Inauspicious"},"tropicalRitu":"Śarad (Autumn) (tropical)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-2.309940809462085,"eotMinutes":10.515556363808276,"ayanamsa":23.598}},"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 Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Āśvina","lunar_month_amanta":"Āśvina","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 Śukla Dvitīyā · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[],"todays_walk":{"walk":{"id":"mangala-walk","name":"Maṅgala Walk","name_sanskrit":"मङ्गल यात्रा","type":"graha","description":"Right action + BG 2.31-38 (kṣatriya-dharma).","step_count":7,"url":"/walk/mangala-walk"},"reason":"Maṅgalavāra (Tuesday) — 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 September 29, 1981 CE · Chicago, USA · Vidhyamitra","description":"September 29, 1981 CE for Chicago, USA: Śukla Dvitīyā, sūryodaya 05:44, sūryāsta 17:36.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/chicago/1981-09-29","hreflang_alternates":{"en":"https://vidhyamitra.com/city/chicago/1981-09-29","sa":"https://sa.vidhyamitra.com/city/chicago/1981-09-29","hi":"https://hi.vidhyamitra.com/city/chicago/1981-09-29","x-default":"https://vidhyamitra.com/city/chicago/1981-09-29"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T00:40:00.820Z","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":"2026-06-02T00:40:00.820Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T00:40:00.820Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}