{"id":"vidhyamitra:city-day:chicago:2004-07-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/chicago/2004-07-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2004-07-18","date_display":"July 18, 2004 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":2004,"month":7,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2453204.770833,"kali_year":5106,"ahargana":1864739.2708,"sun":{"sidereal_longitude":91.3866,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":98.6588,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":7.2722,"elapsed_within_tithi_degrees":7.2722},"nakshatra":{"number":8,"name":"Puṣya","pada":2,"moon_longitude":98.6588,"elapsed_within_degrees":5.3254},"yoga":{"number":15,"name":"Vajra","sum_longitude":190.0454},"karana":{"half_tithi_index":1,"name":"Bava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"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":2004,"month":7,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2453204.770833,"ahargana":1864739.2708,"kali_year":5106,"ayanamsa_lahiri":23.9165,"grahas":{"sun":{"sidereal_longitude":91.84819500000003,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":7,"name":"Punarvasu","pada":4},"retrograde":false},"moon":{"sidereal_longitude":98.12539500000003,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false,"latitude":4.4507},"mars":{"sidereal_longitude":111.25599499999998,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":117.14029499999998,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":142.33369499999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"venus":{"sidereal_longitude":51.02249499999999,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":84.01969500000001,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":17.1397,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":197.1397,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","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":2004,"month":7,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2453204.770833,"kali_year":5106,"ahargana":1864739.2708,"sun":{"sidereal_longitude":91.3866,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":98.6588,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":7.2722,"elapsed_within_tithi_degrees":7.2722},"nakshatra":{"number":8,"name":"Puṣya","pada":2,"moon_longitude":98.6588,"elapsed_within_degrees":5.3254},"yoga":{"number":15,"name":"Vajra","sum_longitude":190.0454},"karana":{"half_tithi_index":1,"name":"Bava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.451,"elongation":7.272},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.451,"opposition_distance":172.728}},"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":"19:22","solarNoonLocal":"11:56","dayLengthHours":14.853333070949674,"dayLengthDisplay":"14 Hours 51 Mins 12 Secs","nightLengthDisplay":"9 Hours 08 Mins 48 Secs","moonriseLocal":"05:03","moonsetLocal":"19:40","rahuKala":{"name":"Rāhu Kāla","start":"17:31","end":"19:22","startHours":17.50958517028128,"endHours":19.36625180414999,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"11:56","end":"13:48","startHours":11.939585268675152,"endHours":13.796251902543862,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:39","end":"17:31","startHours":15.652918536412571,"endHours":17.50958517028128,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"07:59","end":"08:28","startHours":7.978696449755239,"endHours":8.473807552120228,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:08","end":"05:32","startHours":5.131807611156551,"endHours":5.527896493048543,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:27","end":"12:26","startHours":11.444474166310163,"endHours":12.434696371040141,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"02:32","end":"03:31","startHours":2.532474323740358,"endHours":3.5226965284703367,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"03:17","end":"04:31","startHours":3.275140977287842,"endHours":4.512918733200315,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:25","end":"15:24","startHours":14.415140780500096,"endHours":15.405362985230074,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:10","end":"19:34","startHours":19.16625180414999,"endHours":19.56625180414999,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:22","end":"19:59","startHours":19.36625180414999,"endHours":19.985140682106227,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:07","end":"20:52","startHours":19.11625180414999,"endHours":20.86625180414999,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:27","end":"00:26","startHours":23.44447416631016,"endHours":24.434696371040143,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"04:31","end":"06:22","startHours":4.512918733200315,"endHours":6.369585367069024,"quality":"inauspicious"},{"name":"Chala","start":"06:22","end":"08:14","startHours":6.369585367069024,"endHours":8.226252000937734,"quality":"neutral"},{"name":"Labha","start":"08:14","end":"10:05","startHours":8.226252000937734,"endHours":10.082918634806443,"quality":"auspicious"},{"name":"Amṛta","start":"10:05","end":"11:56","startHours":10.082918634806443,"endHours":11.939585268675152,"quality":"auspicious"},{"name":"Kāla","start":"11:56","end":"13:48","startHours":11.939585268675152,"endHours":13.796251902543862,"quality":"inauspicious"},{"name":"Śubha","start":"13:48","end":"15:39","startHours":13.796251902543862,"endHours":15.652918536412571,"quality":"auspicious"},{"name":"Roga","start":"15:39","end":"17:31","startHours":15.652918536412571,"endHours":17.50958517028128,"quality":"inauspicious"},{"name":"Udveg","start":"17:31","end":"19:22","startHours":17.50958517028128,"endHours":19.36625180414999,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"19:22","end":"20:31","startHours":19.36625180414999,"endHours":20.50958517028128,"quality":"auspicious"},{"name":"Roga","start":"20:31","end":"21:39","startHours":20.50958517028128,"endHours":21.65291853641257,"quality":"inauspicious"},{"name":"Udveg","start":"21:39","end":"22:48","startHours":21.65291853641257,"endHours":22.79625190254386,"quality":"inauspicious"},{"name":"Chala","start":"22:48","end":"23:56","startHours":22.79625190254386,"endHours":23.939585268675152,"quality":"neutral"},{"name":"Labha","start":"23:56","end":"01:05","startHours":23.939585268675152,"endHours":25.082918634806443,"quality":"auspicious"},{"name":"Amṛta","start":"01:05","end":"02:14","startHours":25.082918634806443,"endHours":26.226252000937734,"quality":"auspicious"},{"name":"Kāla","start":"02:14","end":"03:22","startHours":26.226252000937734,"endHours":27.369585367069025,"quality":"inauspicious"},{"name":"Śubha","start":"03:22","end":"04:31","startHours":27.369585367069025,"endHours":28.512918733200316,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"04:31","end":"05:31","startHours":4.512918733200315,"endHours":5.512918733200315,"planetary_lord":"Sun"},{"name":"Hora 2","start":"05:31","end":"06:31","startHours":5.512918733200315,"endHours":6.512918733200315,"planetary_lord":"Mars"},{"name":"Hora 3","start":"06:31","end":"07:31","startHours":6.512918733200315,"endHours":7.512918733200315,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"07:31","end":"08:31","startHours":7.512918733200315,"endHours":8.512918733200316,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"08:31","end":"09:31","startHours":8.512918733200316,"endHours":9.512918733200316,"planetary_lord":"Moon"},{"name":"Hora 6","start":"09:31","end":"10:31","startHours":9.512918733200316,"endHours":10.512918733200316,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"10:31","end":"11:31","startHours":10.512918733200316,"endHours":11.512918733200316,"planetary_lord":"Venus"},{"name":"Hora 8","start":"11:31","end":"12:31","startHours":11.512918733200316,"endHours":12.512918733200316,"planetary_lord":"Sun"},{"name":"Hora 9","start":"12:31","end":"13:31","startHours":12.512918733200316,"endHours":13.512918733200316,"planetary_lord":"Mars"},{"name":"Hora 10","start":"13:31","end":"14:31","startHours":13.512918733200316,"endHours":14.512918733200316,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"14:31","end":"15:31","startHours":14.512918733200316,"endHours":15.512918733200316,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"15:31","end":"16:31","startHours":15.512918733200316,"endHours":16.512918733200316,"planetary_lord":"Moon"},{"name":"Hora 13","start":"16:31","end":"17:31","startHours":16.512918733200316,"endHours":17.512918733200316,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"17:31","end":"18:31","startHours":17.512918733200316,"endHours":18.512918733200316,"planetary_lord":"Venus"},{"name":"Hora 15","start":"18:31","end":"19:31","startHours":18.512918733200316,"endHours":19.512918733200316,"planetary_lord":"Sun"},{"name":"Hora 16","start":"19:31","end":"20:31","startHours":19.512918733200316,"endHours":20.512918733200316,"planetary_lord":"Mars"},{"name":"Hora 17","start":"20:31","end":"21:31","startHours":20.512918733200316,"endHours":21.512918733200316,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"21:31","end":"22:31","startHours":21.512918733200316,"endHours":22.512918733200316,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"22:31","end":"23:31","startHours":22.512918733200316,"endHours":23.512918733200316,"planetary_lord":"Moon"},{"name":"Hora 20","start":"23:31","end":"00:31","startHours":23.512918733200316,"endHours":24.512918733200316,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"00:31","end":"01:31","startHours":24.512918733200316,"endHours":25.512918733200316,"planetary_lord":"Venus"},{"name":"Hora 22","start":"01:31","end":"02:31","startHours":25.512918733200316,"endHours":26.512918733200316,"planetary_lord":"Sun"},{"name":"Hora 23","start":"02:31","end":"03:31","startHours":26.512918733200316,"endHours":27.512918733200316,"planetary_lord":"Mars"},{"name":"Hora 24","start":"03:31","end":"04:31","startHours":27.512918733200316,"endHours":28.512918733200316,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Revatī"],"unfavorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Citrā","Svātī","Viśākhā","Anurādhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Vṛṣabha","Karka","Kanyā","Dhanu","Makara"],"unfavorable_rashis":["Mithuna","Siṃha","Tulā","Vṛścika","Kumbha","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"South-West","rahuVasa":"North-East","anandadiYoga":{"name":"Śrīvatsa","quality":"Auspicious"},"tropicalRitu":"Grīṣma (Summer)","vedicRitu":"Grīṣma (Summer)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":20.989238724292157,"eotMinutes":-5.85591612050904,"ayanamsa":23.9165}},"calendars":{"vikram_samvat":2061,"vikram_samvatsara":"Hemalambī","saka_samvat":1926,"saka_samvatsara":"Tāraṇa","bengali_samvat":1411,"malayalam_era":1180,"nanakshahi_year":535,"lunar_month":"Śrāvaṇa","lunar_month_paksha_full":"Śrāvaṇa (Adhika) Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Śrāvaṇa","lunar_month_amanta":"Śrāvaṇa","lunar_month_is_adhika":true,"lunar_month_purnimanta_is_adhika":true,"lunar_month_amanta_is_adhika":true,"solar_month":"Karkaṭa (Āḍi)","ritu":"Varṣā (Monsoon)","display_summary":"Śrāvaṇa (Adhika) Śukla Pratipada · Vikram 2061 Hemalambī · Śaka 1926 Tāraṇa"},"festivals":[],"todays_walk":{"walk":{"id":"surya-walk","name":"Sūrya Walk","name_sanskrit":"सूर्य यात्रा","type":"graha","description":"Self-illumination + BG 4.1 (Sun-lineage of Gītā transmission).","step_count":6,"url":"/walk/surya-walk"},"reason":"Ravivāra (Sunday) — 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 July 18, 2004 CE · Chicago, USA · Vidhyamitra","description":"July 18, 2004 CE for Chicago, USA: Śukla Pratipada, sūryodaya 04:31, sūryāsta 19:22.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/chicago/2004-07-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/chicago/2004-07-18","sa":"https://sa.vidhyamitra.com/city/chicago/2004-07-18","hi":"https://hi.vidhyamitra.com/city/chicago/2004-07-18","x-default":"https://vidhyamitra.com/city/chicago/2004-07-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T07:22:12.087Z","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":"2026-06-01T07:22:12.087Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T07:22:12.087Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}