{"id":"vidhyamitra:city-day:chicago:1981-05-27:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/chicago/1981-05-27","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-05-27","date_display":"May 27, 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":5,"day":27,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444751.770833,"kali_year":5083,"ahargana":1856286.2708,"sun":{"sidereal_longitude":42.0344,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":317.7363,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":23,"name":"Aṣṭamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Aṣṭamī","elongation_degrees":275.7019,"elapsed_within_tithi_degrees":11.7019},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4,"moon_longitude":317.7363,"elapsed_within_degrees":11.0696},"yoga":{"number":27,"name":"Vaidhṛti","sum_longitude":359.7707},"karana":{"half_tithi_index":45,"name":"Kaulava"},"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":5,"day":27,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444751.770833,"ahargana":1856286.2708,"kali_year":5083,"ayanamsa_lahiri":23.5932,"grahas":{"sun":{"sidereal_longitude":42.084362,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1},"retrograde":false},"moon":{"sidereal_longitude":314.201362,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3},"retrograde":false,"latitude":-2.4304},"mars":{"sidereal_longitude":30.04356200000001,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":65.29626200000001,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":157.03576199999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":true},"venus":{"sidereal_longitude":55.37686200000002,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":159.22886199999994,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":true},"rahu":{"sidereal_longitude":105.0203,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":285.0203,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"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":5,"day":27,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444751.770833,"kali_year":5083,"ahargana":1856286.2708,"sun":{"sidereal_longitude":42.0344,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":317.7363,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":23,"name":"Aṣṭamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Aṣṭamī","elongation_degrees":275.7019,"elapsed_within_tithi_degrees":11.7019},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4,"moon_longitude":317.7363,"elapsed_within_degrees":11.0696},"yoga":{"number":27,"name":"Vaidhṛti","sum_longitude":359.7707},"karana":{"half_tithi_index":45,"name":"Kaulava"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.43,"elongation":84.298},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.43,"opposition_distance":95.702}},"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":"04:21","sunsetLocal":"19:14","solarNoonLocal":"11:48","dayLengthHours":14.892080222551025,"dayLengthDisplay":"14 Hours 53 Mins 31 Secs","nightLengthDisplay":"9 Hours 06 Mins 29 Secs","moonriseLocal":"00:24","moonsetLocal":"11:28","rahuKala":{"name":"Rāhu Kāla","start":"11:48","end":"13:39","startHours":11.7918504944676,"endHours":13.653360522286476,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"06:12","end":"08:04","startHours":6.207320411010964,"endHours":8.068830438829842,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:56","end":"11:48","startHours":9.93034046664872,"endHours":11.7918504944676,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"07:49","end":"08:19","startHours":7.8206291017873255,"endHours":8.317031775872358,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"04:58","end":"05:22","startHours":4.966313725798379,"endHours":5.363435865066407,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:18","end":"12:17","startHours":11.295447820382565,"endHours":12.288253168552634,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"02:22","end":"03:21","startHours":2.3601996868519497,"endHours":3.3530050350220177,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"03:06","end":"04:21","startHours":3.104803697979501,"endHours":4.345810383192086,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:16","end":"15:16","startHours":14.27386386489277,"endHours":15.266669213062837,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:02","end":"19:26","startHours":19.03789060574311,"endHours":19.43789060574311,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:14","end":"19:52","startHours":19.23789060574311,"endHours":19.858393948349402,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:59","end":"20:44","startHours":18.98789060574311,"endHours":20.73789060574311,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:18","end":"00:17","startHours":23.295447820382567,"endHours":24.288253168552632,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"04:21","end":"06:12","startHours":4.345810383192086,"endHours":6.207320411010964,"quality":"auspicious"},{"name":"Amṛta","start":"06:12","end":"08:04","startHours":6.207320411010964,"endHours":8.068830438829842,"quality":"auspicious"},{"name":"Kāla","start":"08:04","end":"09:56","startHours":8.068830438829842,"endHours":9.93034046664872,"quality":"inauspicious"},{"name":"Śubha","start":"09:56","end":"11:48","startHours":9.93034046664872,"endHours":11.7918504944676,"quality":"auspicious"},{"name":"Roga","start":"11:48","end":"13:39","startHours":11.7918504944676,"endHours":13.653360522286476,"quality":"inauspicious"},{"name":"Udveg","start":"13:39","end":"15:31","startHours":13.653360522286476,"endHours":15.514870550105355,"quality":"inauspicious"},{"name":"Chala","start":"15:31","end":"17:23","startHours":15.514870550105355,"endHours":17.37638057792423,"quality":"neutral"},{"name":"Labha","start":"17:23","end":"19:14","startHours":17.37638057792423,"endHours":19.23789060574311,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"19:14","end":"20:23","startHours":19.23789060574311,"endHours":20.376380577924234,"quality":"inauspicious"},{"name":"Chala","start":"20:23","end":"21:31","startHours":20.376380577924234,"endHours":21.514870550105353,"quality":"neutral"},{"name":"Labha","start":"21:31","end":"22:39","startHours":21.514870550105353,"endHours":22.653360522286476,"quality":"auspicious"},{"name":"Amṛta","start":"22:39","end":"23:48","startHours":22.653360522286476,"endHours":23.7918504944676,"quality":"auspicious"},{"name":"Kāla","start":"23:48","end":"00:56","startHours":23.7918504944676,"endHours":24.930340466648722,"quality":"inauspicious"},{"name":"Śubha","start":"00:56","end":"02:04","startHours":24.930340466648722,"endHours":26.068830438829842,"quality":"auspicious"},{"name":"Roga","start":"02:04","end":"03:12","startHours":26.068830438829842,"endHours":27.207320411010965,"quality":"inauspicious"},{"name":"Udveg","start":"03:12","end":"04:21","startHours":27.207320411010965,"endHours":28.345810383192088,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"04:21","end":"05:21","startHours":4.345810383192086,"endHours":5.345810383192086,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"05:21","end":"06:21","startHours":5.345810383192086,"endHours":6.345810383192086,"planetary_lord":"Venus"},{"name":"Hora 3","start":"06:21","end":"07:21","startHours":6.345810383192086,"endHours":7.345810383192086,"planetary_lord":"Sun"},{"name":"Hora 4","start":"07:21","end":"08:21","startHours":7.345810383192086,"endHours":8.345810383192086,"planetary_lord":"Mars"},{"name":"Hora 5","start":"08:21","end":"09:21","startHours":8.345810383192086,"endHours":9.345810383192086,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"09:21","end":"10:21","startHours":9.345810383192086,"endHours":10.345810383192086,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"10:21","end":"11:21","startHours":10.345810383192086,"endHours":11.345810383192086,"planetary_lord":"Moon"},{"name":"Hora 8","start":"11:21","end":"12:21","startHours":11.345810383192086,"endHours":12.345810383192086,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"12:21","end":"13:21","startHours":12.345810383192086,"endHours":13.345810383192086,"planetary_lord":"Venus"},{"name":"Hora 10","start":"13:21","end":"14:21","startHours":13.345810383192086,"endHours":14.345810383192086,"planetary_lord":"Sun"},{"name":"Hora 11","start":"14:21","end":"15:21","startHours":14.345810383192086,"endHours":15.345810383192086,"planetary_lord":"Mars"},{"name":"Hora 12","start":"15:21","end":"16:21","startHours":15.345810383192086,"endHours":16.345810383192088,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"16:21","end":"17:21","startHours":16.345810383192088,"endHours":17.345810383192088,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"17:21","end":"18:21","startHours":17.345810383192088,"endHours":18.345810383192088,"planetary_lord":"Moon"},{"name":"Hora 15","start":"18:21","end":"19:21","startHours":18.345810383192088,"endHours":19.345810383192088,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"19:21","end":"20:21","startHours":19.345810383192088,"endHours":20.345810383192088,"planetary_lord":"Venus"},{"name":"Hora 17","start":"20:21","end":"21:21","startHours":20.345810383192088,"endHours":21.345810383192088,"planetary_lord":"Sun"},{"name":"Hora 18","start":"21:21","end":"22:21","startHours":21.345810383192088,"endHours":22.345810383192088,"planetary_lord":"Mars"},{"name":"Hora 19","start":"22:21","end":"23:21","startHours":22.345810383192088,"endHours":23.345810383192088,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"23:21","end":"00:21","startHours":23.345810383192088,"endHours":24.345810383192088,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"00:21","end":"01:21","startHours":24.345810383192088,"endHours":25.345810383192088,"planetary_lord":"Moon"},{"name":"Hora 22","start":"01:21","end":"02:21","startHours":25.345810383192088,"endHours":26.345810383192088,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"02:21","end":"03:21","startHours":26.345810383192088,"endHours":27.345810383192088,"planetary_lord":"Venus"},{"name":"Hora 24","start":"03:21","end":"04:21","startHours":27.345810383192088,"endHours":28.345810383192088,"planetary_lord":"Sun"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Punarvasu","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Uttara Phalgunī","Hasta","Citrā","Svātī","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Dhanu","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Makara","Mīna"]},"dishaShool":"North (Uttara)","chandraVasa":"South","rahuVasa":"South-West","anandadiYoga":{"name":"Śrīvatsa","quality":"Auspicious"},"tropicalRitu":"Grīṣma (Summer) (tropical)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":21.249539257798766,"eotMinutes":3.008170331944147,"ayanamsa":23.5932}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Jyeṣṭha","lunar_month_paksha_full":"Jyeṣṭha Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Jyeṣṭha","lunar_month_amanta":"Vaiśākha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Vṛṣabha (Vaikāsi)","ritu":"Grīṣma (Summer)","display_summary":"Jyeṣṭha Kṛṣṇa Aṣṭamī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[],"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":"-3226-07-09","event":"Bhagavān Krishna's birth at Mathurā","chart_id":"krishna","shared_marker":"same Kṛṣṇa Aṣṭamī","url":"/day/-3226-07-09","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 May 27, 1981 CE · Chicago, USA · Vidhyamitra","description":"May 27, 1981 CE for Chicago, USA: Kṛṣṇa Aṣṭamī, sūryodaya 04:21, sūryāsta 19:14.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/chicago/1981-05-27","hreflang_alternates":{"en":"https://vidhyamitra.com/city/chicago/1981-05-27","sa":"https://sa.vidhyamitra.com/city/chicago/1981-05-27","hi":"https://hi.vidhyamitra.com/city/chicago/1981-05-27","x-default":"https://vidhyamitra.com/city/chicago/1981-05-27"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T18:54:24.915Z","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":"2026-06-01T18:54:24.915Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T18:54:24.915Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}