{"id":"vidhyamitra:city-day:chicago:1981-08-10:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/chicago/1981-08-10","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-08-10","date_display":"August 10, 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":8,"day":10,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444826.770833,"kali_year":5083,"ahargana":1856361.2708,"sun":{"sidereal_longitude":113.1968,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":227.3432,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":114.1464,"elapsed_within_tithi_degrees":6.1464},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1,"moon_longitude":227.3432,"elapsed_within_degrees":0.6766},"yoga":{"number":26,"name":"Indra","sum_longitude":340.54},"karana":{"half_tithi_index":19,"name":"Gara"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"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":8,"day":10,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444826.770833,"ahargana":1856361.2708,"kali_year":5083,"ayanamsa_lahiri":23.5961,"grahas":{"sun":{"sidereal_longitude":113.74059599999998,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":228.12649599999997,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1},"retrograde":false,"latitude":3.6255},"mars":{"sidereal_longitude":81.759996,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":113.78459600000002,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":164.29979600000001,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"venus":{"sidereal_longitude":146.47029600000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":162.47909600000003,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":101.0464,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":281.0464,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"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":8,"day":10,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444826.770833,"kali_year":5083,"ahargana":1856361.2708,"sun":{"sidereal_longitude":113.1968,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":227.3432,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":114.1464,"elapsed_within_tithi_degrees":6.1464},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1,"moon_longitude":227.3432,"elapsed_within_degrees":0.6766},"yoga":{"number":26,"name":"Indra","sum_longitude":340.54},"karana":{"half_tithi_index":19,"name":"Gara"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.626,"elongation":114.146},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.626,"opposition_distance":65.854}},"eclipse_window_40days":[{"offset_days":-10,"type":"solar","occurs":true,"moon_latitude":0.181,"elongation":0.207}]},"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":"04:53","sunsetLocal":"18:59","solarNoonLocal":"11:56","dayLengthHours":14.098258637448621,"dayLengthDisplay":"14 Hours 05 Mins 54 Secs","nightLengthDisplay":"9 Hours 54 Mins 06 Secs","moonriseLocal":"14:55","moonsetLocal":"00:11","rahuKala":{"name":"Rāhu Kāla","start":"06:38","end":"08:24","startHours":6.639548071079412,"endHours":8.40183040076049,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:10","end":"11:56","startHours":10.164112730441566,"endHours":11.926395060122644,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:41","end":"15:27","startHours":13.688677389803722,"endHours":15.4509597194848,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:10","end":"08:38","startHours":8.16685942346968,"endHours":8.636801378051299,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:28","end":"05:50","startHours":5.46469318462536,"endHours":5.8406467482906566,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:27","end":"12:24","startHours":11.456453105541023,"endHours":12.396337014704265,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:00","end":"03:56","startHours":2.9974979230718515,"endHours":3.9373818322350926,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"03:42","end":"04:53","startHours":3.7024108549442825,"endHours":4.877265741398334,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:17","end":"15:13","startHours":14.276104833030749,"endHours":15.21598874219399,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:47","end":"19:11","startHours":18.775524378846956,"endHours":19.175524378846955,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:59","end":"19:34","startHours":18.975524378846956,"endHours":19.56295182207398,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:44","end":"20:29","startHours":18.725524378846956,"endHours":20.475524378846956,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:27","end":"00:24","startHours":23.456453105541023,"endHours":24.396337014704265,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"04:53","end":"06:38","startHours":4.877265741398334,"endHours":6.639548071079412,"quality":"auspicious"},{"name":"Kāla","start":"06:38","end":"08:24","startHours":6.639548071079412,"endHours":8.40183040076049,"quality":"inauspicious"},{"name":"Śubha","start":"08:24","end":"10:10","startHours":8.40183040076049,"endHours":10.164112730441566,"quality":"auspicious"},{"name":"Roga","start":"10:10","end":"11:56","startHours":10.164112730441566,"endHours":11.926395060122644,"quality":"inauspicious"},{"name":"Udveg","start":"11:56","end":"13:41","startHours":11.926395060122644,"endHours":13.688677389803722,"quality":"inauspicious"},{"name":"Chala","start":"13:41","end":"15:27","startHours":13.688677389803722,"endHours":15.4509597194848,"quality":"neutral"},{"name":"Labha","start":"15:27","end":"17:13","startHours":15.4509597194848,"endHours":17.213242049165878,"quality":"auspicious"},{"name":"Amṛta","start":"17:13","end":"18:59","startHours":17.213242049165878,"endHours":18.975524378846956,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:59","end":"20:13","startHours":18.975524378846956,"endHours":20.213242049165878,"quality":"neutral"},{"name":"Labha","start":"20:13","end":"21:27","startHours":20.213242049165878,"endHours":21.4509597194848,"quality":"auspicious"},{"name":"Amṛta","start":"21:27","end":"22:41","startHours":21.4509597194848,"endHours":22.688677389803722,"quality":"auspicious"},{"name":"Kāla","start":"22:41","end":"23:56","startHours":22.688677389803722,"endHours":23.926395060122644,"quality":"inauspicious"},{"name":"Śubha","start":"23:56","end":"01:10","startHours":23.926395060122644,"endHours":25.164112730441566,"quality":"auspicious"},{"name":"Roga","start":"01:10","end":"02:24","startHours":25.164112730441566,"endHours":26.40183040076049,"quality":"inauspicious"},{"name":"Udveg","start":"02:24","end":"03:38","startHours":26.40183040076049,"endHours":27.63954807107941,"quality":"inauspicious"},{"name":"Chala","start":"03:38","end":"04:53","startHours":27.63954807107941,"endHours":28.877265741398332,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"04:53","end":"05:53","startHours":4.877265741398334,"endHours":5.877265741398334,"planetary_lord":"Moon"},{"name":"Hora 2","start":"05:53","end":"06:53","startHours":5.877265741398334,"endHours":6.877265741398334,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"06:53","end":"07:53","startHours":6.877265741398334,"endHours":7.877265741398334,"planetary_lord":"Venus"},{"name":"Hora 4","start":"07:53","end":"08:53","startHours":7.877265741398334,"endHours":8.877265741398334,"planetary_lord":"Sun"},{"name":"Hora 5","start":"08:53","end":"09:53","startHours":8.877265741398334,"endHours":9.877265741398334,"planetary_lord":"Mars"},{"name":"Hora 6","start":"09:53","end":"10:53","startHours":9.877265741398334,"endHours":10.877265741398334,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"10:53","end":"11:53","startHours":10.877265741398334,"endHours":11.877265741398334,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"11:53","end":"12:53","startHours":11.877265741398334,"endHours":12.877265741398334,"planetary_lord":"Moon"},{"name":"Hora 9","start":"12:53","end":"13:53","startHours":12.877265741398334,"endHours":13.877265741398334,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"13:53","end":"14:53","startHours":13.877265741398334,"endHours":14.877265741398334,"planetary_lord":"Venus"},{"name":"Hora 11","start":"14:53","end":"15:53","startHours":14.877265741398334,"endHours":15.877265741398334,"planetary_lord":"Sun"},{"name":"Hora 12","start":"15:53","end":"16:53","startHours":15.877265741398334,"endHours":16.877265741398332,"planetary_lord":"Mars"},{"name":"Hora 13","start":"16:53","end":"17:53","startHours":16.877265741398332,"endHours":17.877265741398332,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"17:53","end":"18:53","startHours":17.877265741398332,"endHours":18.877265741398332,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"18:53","end":"19:53","startHours":18.877265741398332,"endHours":19.877265741398332,"planetary_lord":"Moon"},{"name":"Hora 16","start":"19:53","end":"20:53","startHours":19.877265741398332,"endHours":20.877265741398332,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"20:53","end":"21:53","startHours":20.877265741398332,"endHours":21.877265741398332,"planetary_lord":"Venus"},{"name":"Hora 18","start":"21:53","end":"22:53","startHours":21.877265741398332,"endHours":22.877265741398332,"planetary_lord":"Sun"},{"name":"Hora 19","start":"22:53","end":"23:53","startHours":22.877265741398332,"endHours":23.877265741398332,"planetary_lord":"Mars"},{"name":"Hora 20","start":"23:53","end":"00:53","startHours":23.877265741398332,"endHours":24.877265741398332,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"00:53","end":"01:53","startHours":24.877265741398332,"endHours":25.877265741398332,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"01:53","end":"02:53","startHours":25.877265741398332,"endHours":26.877265741398332,"planetary_lord":"Moon"},{"name":"Hora 23","start":"02:53","end":"03:53","startHours":26.877265741398332,"endHours":27.877265741398332,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"03:53","end":"04:53","startHours":27.877265741398332,"endHours":28.877265741398332,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"unfavorable_nakshatras":["Ārdrā","Punarvasu","Puṣya","Aśleṣā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Vṛścika","Makara"],"unfavorable_rashis":["Mithuna","Karka","Tulā","Dhanu","Kumbha","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"North-East","rahuVasa":"North-East","anandadiYoga":{"name":"Mausala","quality":"Inauspicious"},"tropicalRitu":"Varṣā (Monsoon) (tropical)","vedicRitu":"Grīṣma (Summer)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":15.63682767511427,"eotMinutes":-5.064503607358518,"ayanamsa":23.5961}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Śrāvaṇa","lunar_month_paksha_full":"Śrāvaṇa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Śrāvaṇa","lunar_month_amanta":"Śrāvaṇa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Karkaṭa (Āḍi)","ritu":"Varṣā (Monsoon)","display_summary":"Śrāvaṇa Śukla Daśamī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[],"todays_walk":{"walk":{"id":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7.","step_count":5,"url":"/walk/chandra-walk"},"reason":"Somavāra (Monday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3137-10-20","event":"Karṇa-Vadha (Mahābhārata Day 17)","chart_id":"karna","shared_marker":"same Jyeṣṭhā","url":"/day/-3137-10-20","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 August 10, 1981 CE · Chicago, USA · Vidhyamitra","description":"August 10, 1981 CE for Chicago, USA: Śukla Daśamī, sūryodaya 04:53, sūryāsta 18:59.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/chicago/1981-08-10","hreflang_alternates":{"en":"https://vidhyamitra.com/city/chicago/1981-08-10","sa":"https://sa.vidhyamitra.com/city/chicago/1981-08-10","hi":"https://hi.vidhyamitra.com/city/chicago/1981-08-10","x-default":"https://vidhyamitra.com/city/chicago/1981-08-10"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T19:36:43.981Z","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":"2026-06-01T19:36:43.981Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T19:36:43.981Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}