{"id":"vidhyamitra:city-day:chicago:1981-01-14:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/chicago/1981-01-14","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-01-14","date_display":"January 14, 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":1,"day":14,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444618.770833,"kali_year":5082,"ahargana":1856153.2708,"sun":{"sidereal_longitude":270.1294,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":9.0067,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":9,"name":"Navamī","paksha":"Śukla","full_name":"Śukla Navamī","elongation_degrees":98.8773,"elapsed_within_tithi_degrees":2.8773},"nakshatra":{"number":1,"name":"Aśvinī","pada":3,"moon_longitude":9.0067,"elapsed_within_degrees":9.0067},"yoga":{"number":21,"name":"Siddha","sum_longitude":279.1361},"karana":{"half_tithi_index":16,"name":"Bālava"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"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":1,"day":14,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444618.770833,"ahargana":1856153.2708,"kali_year":5082,"ayanamsa_lahiri":23.5881,"grahas":{"sun":{"sidereal_longitude":270.203043,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":8.293043000000011,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":3},"retrograde":false,"latitude":-4.3834},"mars":{"sidereal_longitude":287.8249430000001,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":279.05324300000007,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":166.66484300000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"venus":{"sidereal_longitude":250.1337430000001,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":165.94134299999996,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":112.0673,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":292.0673,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","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":1,"day":14,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444618.770833,"kali_year":5082,"ahargana":1856153.2708,"sun":{"sidereal_longitude":270.1294,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":9.0067,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":9,"name":"Navamī","paksha":"Śukla","full_name":"Śukla Navamī","elongation_degrees":98.8773,"elapsed_within_tithi_degrees":2.8773},"nakshatra":{"number":1,"name":"Aśvinī","pada":3,"moon_longitude":9.0067,"elapsed_within_degrees":9.0067},"yoga":{"number":21,"name":"Siddha","sum_longitude":279.1361},"karana":{"half_tithi_index":16,"name":"Bālava"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.383,"elongation":98.877},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.383,"opposition_distance":81.123}},"eclipse_window_40days":[{"offset_days":6,"type":"lunar","occurs":true,"moon_latitude":-1.332,"opposition_distance":1.776}]},"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":"07:16","sunsetLocal":"16:43","solarNoonLocal":"12:00","dayLengthHours":9.436107266843223,"dayLengthDisplay":"9 Hours 26 Mins 10 Secs","nightLengthDisplay":"14 Hours 33 Mins 50 Secs","moonriseLocal":"11:44","moonsetLocal":"01:20","rahuKala":{"name":"Rāhu Kāla","start":"12:00","end":"13:10","startHours":11.991945416655806,"endHours":13.17145882501121,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"08:27","end":"09:38","startHours":8.4534051915896,"endHours":9.632918599945,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:49","end":"12:00","startHours":10.812432008300405,"endHours":11.991945416655806,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:29","end":"09:47","startHours":9.475650145497614,"endHours":9.790187054392389,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:40","end":"07:55","startHours":7.667062919352663,"endHours":7.918692446468482,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:41","end":"12:18","startHours":11.677408507761031,"endHours":12.306482325550581,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"06:01","end":"06:39","startHours":6.0157441476550995,"endHours":6.6448179654446475,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:29","end":"07:16","startHours":6.48754951099726,"endHours":7.273891783234196,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:34","end":"14:12","startHours":13.564629961129677,"endHours":14.193703778919225,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"16:31","end":"16:55","startHours":16.50999905007742,"endHours":16.909999050077417,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"16:43","end":"17:06","startHours":16.709999050077418,"endHours":17.103170186195886,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"16:28","end":"18:13","startHours":16.459999050077418,"endHours":18.209999050077418,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:41","end":"00:18","startHours":23.677408507761033,"endHours":24.30648232555058,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"07:16","end":"08:27","startHours":7.273891783234196,"endHours":8.4534051915896,"quality":"auspicious"},{"name":"Amṛta","start":"08:27","end":"09:38","startHours":8.4534051915896,"endHours":9.632918599945,"quality":"auspicious"},{"name":"Kāla","start":"09:38","end":"10:49","startHours":9.632918599945,"endHours":10.812432008300405,"quality":"inauspicious"},{"name":"Śubha","start":"10:49","end":"12:00","startHours":10.812432008300405,"endHours":11.991945416655806,"quality":"auspicious"},{"name":"Roga","start":"12:00","end":"13:10","startHours":11.991945416655806,"endHours":13.17145882501121,"quality":"inauspicious"},{"name":"Udveg","start":"13:10","end":"14:21","startHours":13.17145882501121,"endHours":14.350972233366612,"quality":"inauspicious"},{"name":"Chala","start":"14:21","end":"15:32","startHours":14.350972233366612,"endHours":15.530485641722017,"quality":"neutral"},{"name":"Labha","start":"15:32","end":"16:43","startHours":15.530485641722017,"endHours":16.709999050077418,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"16:43","end":"18:32","startHours":16.709999050077418,"endHours":18.530485641722017,"quality":"inauspicious"},{"name":"Chala","start":"18:32","end":"20:21","startHours":18.530485641722017,"endHours":20.350972233366612,"quality":"neutral"},{"name":"Labha","start":"20:21","end":"22:10","startHours":20.350972233366612,"endHours":22.171458825011207,"quality":"auspicious"},{"name":"Amṛta","start":"22:10","end":"00:00","startHours":22.171458825011207,"endHours":23.991945416655806,"quality":"auspicious"},{"name":"Kāla","start":"00:00","end":"01:49","startHours":23.991945416655806,"endHours":25.812432008300405,"quality":"inauspicious"},{"name":"Śubha","start":"01:49","end":"03:38","startHours":25.812432008300405,"endHours":27.632918599945,"quality":"auspicious"},{"name":"Roga","start":"03:38","end":"05:27","startHours":27.632918599945,"endHours":29.453405191589596,"quality":"inauspicious"},{"name":"Udveg","start":"05:27","end":"07:16","startHours":29.453405191589596,"endHours":31.273891783234195,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:16","end":"08:16","startHours":7.273891783234196,"endHours":8.273891783234195,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"08:16","end":"09:16","startHours":8.273891783234195,"endHours":9.273891783234195,"planetary_lord":"Venus"},{"name":"Hora 3","start":"09:16","end":"10:16","startHours":9.273891783234195,"endHours":10.273891783234195,"planetary_lord":"Sun"},{"name":"Hora 4","start":"10:16","end":"11:16","startHours":10.273891783234195,"endHours":11.273891783234195,"planetary_lord":"Mars"},{"name":"Hora 5","start":"11:16","end":"12:16","startHours":11.273891783234195,"endHours":12.273891783234195,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"12:16","end":"13:16","startHours":12.273891783234195,"endHours":13.273891783234195,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"13:16","end":"14:16","startHours":13.273891783234195,"endHours":14.273891783234195,"planetary_lord":"Moon"},{"name":"Hora 8","start":"14:16","end":"15:16","startHours":14.273891783234195,"endHours":15.273891783234195,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"15:16","end":"16:16","startHours":15.273891783234195,"endHours":16.273891783234195,"planetary_lord":"Venus"},{"name":"Hora 10","start":"16:16","end":"17:16","startHours":16.273891783234195,"endHours":17.273891783234195,"planetary_lord":"Sun"},{"name":"Hora 11","start":"17:16","end":"18:16","startHours":17.273891783234195,"endHours":18.273891783234195,"planetary_lord":"Mars"},{"name":"Hora 12","start":"18:16","end":"19:16","startHours":18.273891783234195,"endHours":19.273891783234195,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"19:16","end":"20:16","startHours":19.273891783234195,"endHours":20.273891783234195,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"20:16","end":"21:16","startHours":20.273891783234195,"endHours":21.273891783234195,"planetary_lord":"Moon"},{"name":"Hora 15","start":"21:16","end":"22:16","startHours":21.273891783234195,"endHours":22.273891783234195,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"22:16","end":"23:16","startHours":22.273891783234195,"endHours":23.273891783234195,"planetary_lord":"Venus"},{"name":"Hora 17","start":"23:16","end":"00:16","startHours":23.273891783234195,"endHours":24.273891783234195,"planetary_lord":"Sun"},{"name":"Hora 18","start":"00:16","end":"01:16","startHours":24.273891783234195,"endHours":25.273891783234195,"planetary_lord":"Mars"},{"name":"Hora 19","start":"01:16","end":"02:16","startHours":25.273891783234195,"endHours":26.273891783234195,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"02:16","end":"03:16","startHours":26.273891783234195,"endHours":27.273891783234195,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"03:16","end":"04:16","startHours":27.273891783234195,"endHours":28.273891783234195,"planetary_lord":"Moon"},{"name":"Hora 22","start":"04:16","end":"05:16","startHours":28.273891783234195,"endHours":29.273891783234195,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"05:16","end":"06:16","startHours":29.273891783234195,"endHours":30.273891783234195,"planetary_lord":"Venus"},{"name":"Hora 24","start":"06:16","end":"07:16","startHours":30.273891783234195,"endHours":31.273891783234195,"planetary_lord":"Sun"}],"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":"North (Uttara)","chandraVasa":"East","rahuVasa":"South-West","anandadiYoga":{"name":"Mānasa","quality":"Auspicious"},"tropicalRitu":"Hemanta (Pre-winter)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-21.341991955971398,"eotMinutes":-8.99752499934842,"ayanamsa":23.5881}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"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":"Makara (Tai)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Śukla Navamī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"makara-sankranti","name":"Makara Saṅkrānti (Uttarāyaṇa)","name_sanskrit":"मकर सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Capricorn; Uttarāyaṇa (north-going) begins. Bhīṣma's chosen mahaprasthāna time.","vrata":true,"detection":{"sun_rashi_ingress":"Makara"},"precedence":1,"sources":["Mahābhārata Bhīṣma-Stuti","Sūrya-Siddhānta"]},{"id":"pongal","name":"Pongal / Thai Pongal","name_sanskrit":"पोङ्गल","tradition":"Regional","associated_deity":"Sūrya Bhagavān","significance":"Tamil 4-day harvest festival; coincides with Makara Saṅkrānti.","vrata":false,"detection":{"sun_rashi_ingress":"Makara"},"precedence":2}],"todays_walk":{"walk":{"id":"budha-walk","name":"Budha Walk","name_sanskrit":"बुध यात्रा","type":"graha","description":"Discrimination + BG 2.41 (vyavasāyātmikā buddhi).","step_count":6,"url":"/walk/budha-walk"},"reason":"Budhavāra (Wednesday) — 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 14, 1981 CE · Chicago, USA · Vidhyamitra","description":"January 14, 1981 CE for Chicago, USA: Śukla Navamī, sūryodaya 07:16, sūryāsta 16:43.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/chicago/1981-01-14","hreflang_alternates":{"en":"https://vidhyamitra.com/city/chicago/1981-01-14","sa":"https://sa.vidhyamitra.com/city/chicago/1981-01-14","hi":"https://hi.vidhyamitra.com/city/chicago/1981-01-14","x-default":"https://vidhyamitra.com/city/chicago/1981-01-14"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T08:13:03.697Z","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":"2026-06-02T08:13:03.697Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T08:13:03.697Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}