{"id":"vidhyamitra:city-day:chicago:1997-05-15:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/chicago/1997-05-15","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1997-05-15","date_display":"May 15, 1997 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":"Not independently benchmarked across the declared range","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":1997,"month":5,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450583.770833,"kali_year":5099,"ahargana":1862118.2708,"sun":{"sidereal_longitude":30.432,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":126.48,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":9,"name":"Navamī","paksha":"Śukla","full_name":"Śukla Navamī","elongation_degrees":96.048,"elapsed_within_tithi_degrees":0.048},"nakshatra":{"number":10,"name":"Maghā","pada":2,"moon_longitude":126.48,"elapsed_within_degrees":6.48},"yoga":{"number":12,"name":"Dhruva","sum_longitude":156.912},"karana":{"half_tithi_index":16,"name":"Bālava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"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":1997,"month":5,"day":15,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2450583.770833,"ahargana":1862118.2708,"kali_year":5099,"ayanamsa_lahiri":23.8162,"grahas":{"sun":{"sidereal_longitude":30.443535999999995,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":126.899336,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":false,"latitude":-2.2164},"mars":{"sidereal_longitude":144.65603599999997,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":true},"mercury":{"sidereal_longitude":7.115836000000002,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":297.107436,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":41.557435999999996,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":351.809336,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":156.0129,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":336.0129,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","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":"Not independently benchmarked across the declared range","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":1997,"month":5,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450583.770833,"kali_year":5099,"ahargana":1862118.2708,"sun":{"sidereal_longitude":30.432,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":126.48,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":9,"name":"Navamī","paksha":"Śukla","full_name":"Śukla Navamī","elongation_degrees":96.048,"elapsed_within_tithi_degrees":0.048},"nakshatra":{"number":10,"name":"Maghā","pada":2,"moon_longitude":126.48,"elapsed_within_degrees":6.48},"yoga":{"number":12,"name":"Dhruva","sum_longitude":156.912},"karana":{"half_tithi_index":16,"name":"Bālava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.216,"elongation":96.048},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.216,"opposition_distance":83.952}},"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":"04:31","sunsetLocal":"19:03","solarNoonLocal":"11:47","dayLengthHours":14.54037069201275,"dayLengthDisplay":"14 Hours 32 Mins 25 Secs","nightLengthDisplay":"9 Hours 27 Mins 35 Secs","moonriseLocal":"11:28","moonsetLocal":"00:57","rahuKala":{"name":"Rāhu Kāla","start":"13:36","end":"15:25","startHours":13.59692965423616,"endHours":15.414475990737754,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"04:31","end":"06:20","startHours":4.509197971728192,"endHours":6.326744308229785,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:09","end":"09:58","startHours":8.14429064473138,"endHours":9.961836981232974,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"07:54","end":"08:23","startHours":7.901951133197834,"endHours":8.386630156264925,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:07","end":"05:30","startHours":5.1150467505620565,"endHours":5.50278996901573,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:18","end":"12:16","startHours":11.294704294667476,"endHours":12.264062340801658,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"02:34","end":"03:32","startHours":2.570481879459825,"endHours":3.5398399255940083,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"03:18","end":"04:31","startHours":3.2975004140604622,"endHours":4.509197971728192,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:12","end":"15:10","startHours":14.202778433070026,"endHours":15.17213647920421,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:51","end":"19:15","startHours":18.849568663740943,"endHours":19.24956866374094,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:03","end":"19:39","startHours":19.049568663740942,"endHours":19.655417442574805,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:48","end":"20:33","startHours":18.799568663740942,"endHours":20.549568663740942,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:18","end":"00:16","startHours":23.294704294667476,"endHours":24.264062340801658,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"04:31","end":"06:20","startHours":4.509197971728192,"endHours":6.326744308229785,"quality":"auspicious"},{"name":"Roga","start":"06:20","end":"08:09","startHours":6.326744308229785,"endHours":8.14429064473138,"quality":"inauspicious"},{"name":"Udveg","start":"08:09","end":"09:58","startHours":8.14429064473138,"endHours":9.961836981232974,"quality":"inauspicious"},{"name":"Chala","start":"09:58","end":"11:47","startHours":9.961836981232974,"endHours":11.779383317734567,"quality":"neutral"},{"name":"Labha","start":"11:47","end":"13:36","startHours":11.779383317734567,"endHours":13.59692965423616,"quality":"auspicious"},{"name":"Amṛta","start":"13:36","end":"15:25","startHours":13.59692965423616,"endHours":15.414475990737754,"quality":"auspicious"},{"name":"Kāla","start":"15:25","end":"17:14","startHours":15.414475990737754,"endHours":17.23202232723935,"quality":"inauspicious"},{"name":"Śubha","start":"17:14","end":"19:03","startHours":17.23202232723935,"endHours":19.049568663740942,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"19:03","end":"20:14","startHours":19.049568663740942,"endHours":20.23202232723935,"quality":"auspicious"},{"name":"Kāla","start":"20:14","end":"21:25","startHours":20.23202232723935,"endHours":21.414475990737756,"quality":"inauspicious"},{"name":"Śubha","start":"21:25","end":"22:36","startHours":21.414475990737756,"endHours":22.59692965423616,"quality":"auspicious"},{"name":"Roga","start":"22:36","end":"23:47","startHours":22.59692965423616,"endHours":23.779383317734567,"quality":"inauspicious"},{"name":"Udveg","start":"23:47","end":"00:58","startHours":23.779383317734567,"endHours":24.961836981232974,"quality":"inauspicious"},{"name":"Chala","start":"00:58","end":"02:09","startHours":24.961836981232974,"endHours":26.144290644731377,"quality":"neutral"},{"name":"Labha","start":"02:09","end":"03:20","startHours":26.144290644731377,"endHours":27.326744308229785,"quality":"auspicious"},{"name":"Amṛta","start":"03:20","end":"04:31","startHours":27.326744308229785,"endHours":28.50919797172819,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"04:31","end":"05:31","startHours":4.509197971728192,"endHours":5.509197971728192,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"05:31","end":"06:31","startHours":5.509197971728192,"endHours":6.509197971728192,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"06:31","end":"07:31","startHours":6.509197971728192,"endHours":7.509197971728192,"planetary_lord":"Moon"},{"name":"Hora 4","start":"07:31","end":"08:31","startHours":7.509197971728192,"endHours":8.509197971728192,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"08:31","end":"09:31","startHours":8.509197971728192,"endHours":9.509197971728192,"planetary_lord":"Venus"},{"name":"Hora 6","start":"09:31","end":"10:31","startHours":9.509197971728192,"endHours":10.509197971728192,"planetary_lord":"Sun"},{"name":"Hora 7","start":"10:31","end":"11:31","startHours":10.509197971728192,"endHours":11.509197971728192,"planetary_lord":"Mars"},{"name":"Hora 8","start":"11:31","end":"12:31","startHours":11.509197971728192,"endHours":12.509197971728192,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"12:31","end":"13:31","startHours":12.509197971728192,"endHours":13.509197971728192,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"13:31","end":"14:31","startHours":13.509197971728192,"endHours":14.509197971728192,"planetary_lord":"Moon"},{"name":"Hora 11","start":"14:31","end":"15:31","startHours":14.509197971728192,"endHours":15.509197971728192,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"15:31","end":"16:31","startHours":15.509197971728192,"endHours":16.50919797172819,"planetary_lord":"Venus"},{"name":"Hora 13","start":"16:31","end":"17:31","startHours":16.50919797172819,"endHours":17.50919797172819,"planetary_lord":"Sun"},{"name":"Hora 14","start":"17:31","end":"18:31","startHours":17.50919797172819,"endHours":18.50919797172819,"planetary_lord":"Mars"},{"name":"Hora 15","start":"18:31","end":"19:31","startHours":18.50919797172819,"endHours":19.50919797172819,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"19:31","end":"20:31","startHours":19.50919797172819,"endHours":20.50919797172819,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"20:31","end":"21:31","startHours":20.50919797172819,"endHours":21.50919797172819,"planetary_lord":"Moon"},{"name":"Hora 18","start":"21:31","end":"22:31","startHours":21.50919797172819,"endHours":22.50919797172819,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"22:31","end":"23:31","startHours":22.50919797172819,"endHours":23.50919797172819,"planetary_lord":"Venus"},{"name":"Hora 20","start":"23:31","end":"00:31","startHours":23.50919797172819,"endHours":24.50919797172819,"planetary_lord":"Sun"},{"name":"Hora 21","start":"00:31","end":"01:31","startHours":24.50919797172819,"endHours":25.50919797172819,"planetary_lord":"Mars"},{"name":"Hora 22","start":"01:31","end":"02:31","startHours":25.50919797172819,"endHours":26.50919797172819,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"02:31","end":"03:31","startHours":26.50919797172819,"endHours":27.50919797172819,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"03:31","end":"04:31","startHours":27.50919797172819,"endHours":28.50919797172819,"planetary_lord":"Moon"}],"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":["Vṛṣabha","Mithuna","Siṃha","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Kanyā","Vṛścika","Dhanu","Mīna"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"West","rahuVasa":"North-West","anandadiYoga":{"name":"Cara","quality":"Auspicious"},"tropicalRitu":"Vasanta (Spring)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":18.834085209603476,"eotMinutes":3.7562009359260493,"ayanamsa":23.8162}},"calendars":{"vikram_samvat":2054,"vikram_samvatsara":"Vikṛti","saka_samvat":1919,"saka_samvatsara":"Īśvara","bengali_samvat":1404,"malayalam_era":1173,"nanakshahi_year":528,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Vaiśākha","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":"Vasanta (Spring)","display_summary":"Vaiśākha Śukla Navamī · Vikram 2054 Vikṛti · Śaka 1919 Īśvara"},"festivals":[{"id":"sita-navami","name":"Sītā Navamī","name_sanskrit":"सीता नवमी","tradition":"Vaishnava","associated_deity":"Sītā Devī (Lakṣmī as Bhū-suta)","significance":"Devī Sītā's manifestation in Mithilā; rāmāvatāra-kalatra.","vrata":true,"detection":{"tithi_number":9,"tithi_paksha":"Śukla","lunar_month":"Vaiśākha"},"precedence":2,"sources":["Vālmīki Rāmāyaṇa, Bāla-Kāṇḍa 66"]},{"id":"madhva-jayanti","name":"Madhvācārya Jayantī","name_sanskrit":"मध्वाचार्य जयन्ती","tradition":"Vaishnava","associated_deity":"Madhvācārya (Dvaita)","significance":"Birth of Madhvācārya; Dvaita-pratiṣṭhāpaka. Vaiśākha Śukla 9.","vrata":false,"detection":{"tithi_number":9,"tithi_paksha":"Śukla","lunar_month":"Vaiśākha"},"precedence":4}],"todays_walk":{"walk":{"id":"guru-walk","name":"Bṛhaspati Walk","name_sanskrit":"गुरु यात्रा","type":"graha","description":"Wisdom transmission + BG 4.34.","step_count":8,"url":"/walk/guru-walk"},"reason":"Dedicated festival walk for Sītā Navamī · Madhvācārya Jayantī is not live yet; Guruvāra (Thursday) — 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 May 15, 1997 CE · Chicago, USA · Vidhyamitra","description":"May 15, 1997 CE for Chicago, USA: Śukla Navamī, sūryodaya 04:31, sūryāsta 19:03.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/chicago/1997-05-15","hreflang_alternates":{"en":"https://vidhyamitra.com/city/chicago/1997-05-15","sa":"https://sa.vidhyamitra.com/city/chicago/1997-05-15","hi":"https://hi.vidhyamitra.com/city/chicago/1997-05-15","x-default":"https://vidhyamitra.com/city/chicago/1997-05-15"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-09-06T08:21:10.759Z","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":"2026-09-06T08:21:10.759Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-09-06T08:21:10.759Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"},"reader_local_antaryami":{"reader_geography":"Every reader enters from their own kṣetra anywhere on Bhūmi; no single city is the universal center.","purna_chain":["Hosted scripture","Named-tradition interpretation","Original Vidhyamitra contemplation","Bhūmi-born material medium","Vidhyamitra portal","Responsible reader in their own kṣetra"],"claim_boundary":"The legacy purna_chain field carries a source-to-reader sequence, not a revealed physical descent, universal cosmology, or proof that software is conscious.","antaryami_responsibility_formula":"Kṣīrodakaśāyī Viṣṇu = Paramātmā = Antaryāmī. Jīva desires. Prakṛti executes through guṇas. Paramātmā witnesses, permits, remembers, guides, and sustains. Bhagavān is the ultimate source.","source_anchors":[{"label":"BG 13.23","path":"/bhagavad-gita/13/23","meaning":"upadraṣṭā-anumantā · witness-permitter"},{"label":"BG 15.15","path":"/bhagavad-gita/15/15","meaning":"the Lord seated in every heart as memory, knowledge, and forgetting"},{"label":"BG 18.61","path":"/bhagavad-gita/18/61","meaning":"Īśvara seated in the heart of all beings"}],"nama_seal":"Hare Krishna Hare Krishna · Krishna Krishna Hare Hare · Hare Rama Hare Rama · Rama Rama Hare Hare"}}}