{"id":"vidhyamitra:city-day:lucknow:1997-05-20:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/lucknow/1997-05-20","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1997-05-20","date_display":"May 20, 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":"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":1997,"month":5,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450588.770833,"kali_year":5099,"ahargana":1862123.2708,"sun":{"sidereal_longitude":35.218,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":186.3887,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":151.1707,"elapsed_within_tithi_degrees":7.1707},"nakshatra":{"number":14,"name":"Citrā","pada":4,"moon_longitude":186.3887,"elapsed_within_degrees":13.0554},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":221.6068},"karana":{"half_tithi_index":25,"name":"Taitila"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"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":20,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2450588.770833,"ahargana":1862123.2708,"kali_year":5099,"ayanamsa_lahiri":23.8164,"grahas":{"sun":{"sidereal_longitude":35.260144999999966,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":187.14884499999994,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false,"latitude":2.2917},"mars":{"sidereal_longitude":145.73074499999996,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":true},"mercury":{"sidereal_longitude":10.237745000000018,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":297.4680450000001,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":47.700244999999995,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":352.33394499999997,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":155.7479,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":335.7479,"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":"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":1997,"month":5,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450588.770833,"kali_year":5099,"ahargana":1862123.2708,"sun":{"sidereal_longitude":35.218,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":186.3887,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":151.1707,"elapsed_within_tithi_degrees":7.1707},"nakshatra":{"number":14,"name":"Citrā","pada":4,"moon_longitude":186.3887,"elapsed_within_degrees":13.0554},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":221.6068},"karana":{"half_tithi_index":25,"name":"Taitila"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.292,"elongation":151.171},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.292,"opposition_distance":28.829}},"eclipse_window_40days":[]},"city":{"slug":"lucknow","name":"Lucknow, Uttar Pradesh","lat":26.8467,"lon":80.9462,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tier-1"},"tier2":{"city":{"slug":"lucknow","name":"Lucknow, Uttar Pradesh","lat":26.8467,"lon":80.9462,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tier-1"},"sunriseLocal":"05:16","sunsetLocal":"18:49","solarNoonLocal":"12:03","dayLengthHours":13.546523190508372,"dayLengthDisplay":"13 Hours 32 Mins 47 Secs","nightLengthDisplay":"10 Hours 27 Mins 13 Secs","moonriseLocal":"16:32","moonsetLocal":"03:49","rahuKala":{"name":"Rāhu Kāla","start":"15:26","end":"17:07","startHours":15.430245580690672,"endHours":17.12356097950422,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"08:39","end":"10:21","startHours":8.656983985436487,"endHours":10.350299384250032,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:03","end":"13:44","startHours":12.043614783063578,"endHours":13.736930181877126,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:26","end":"08:53","startHours":8.431208598928013,"endHours":8.882759371944958,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:50","end":"06:12","startHours":5.8347916540805755,"endHours":6.196032272494132,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:36","end":"12:30","startHours":11.592064010046634,"endHours":12.495165556080526,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:28","end":"04:22","startHours":3.4641500957416103,"endHours":4.367251641775502,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:08","end":"05:16","startHours":4.141476255267029,"endHours":5.270353187809393,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:18","end":"15:12","startHours":14.301368648148308,"endHours":15.2044701941822,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:37","end":"19:01","startHours":18.616876378317766,"endHours":19.016876378317765,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:49","end":"19:23","startHours":18.816876378317765,"endHours":19.381314844588946,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:34","end":"20:19","startHours":18.566876378317765,"endHours":20.316876378317765,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:36","end":"00:30","startHours":23.592064010046634,"endHours":24.49516555608053,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"05:16","end":"06:58","startHours":5.270353187809393,"endHours":6.96366858662294,"quality":"inauspicious"},{"name":"Udveg","start":"06:58","end":"08:39","startHours":6.96366858662294,"endHours":8.656983985436487,"quality":"inauspicious"},{"name":"Chala","start":"08:39","end":"10:21","startHours":8.656983985436487,"endHours":10.350299384250032,"quality":"neutral"},{"name":"Labha","start":"10:21","end":"12:03","startHours":10.350299384250032,"endHours":12.043614783063578,"quality":"auspicious"},{"name":"Amṛta","start":"12:03","end":"13:44","startHours":12.043614783063578,"endHours":13.736930181877126,"quality":"auspicious"},{"name":"Kāla","start":"13:44","end":"15:26","startHours":13.736930181877126,"endHours":15.430245580690672,"quality":"inauspicious"},{"name":"Śubha","start":"15:26","end":"17:07","startHours":15.430245580690672,"endHours":17.12356097950422,"quality":"auspicious"},{"name":"Roga","start":"17:07","end":"18:49","startHours":17.12356097950422,"endHours":18.816876378317765,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"18:49","end":"20:07","startHours":18.816876378317765,"endHours":20.12356097950422,"quality":"inauspicious"},{"name":"Śubha","start":"20:07","end":"21:26","startHours":20.12356097950422,"endHours":21.430245580690674,"quality":"auspicious"},{"name":"Roga","start":"21:26","end":"22:44","startHours":21.430245580690674,"endHours":22.736930181877128,"quality":"inauspicious"},{"name":"Udveg","start":"22:44","end":"00:03","startHours":22.736930181877128,"endHours":24.04361478306358,"quality":"inauspicious"},{"name":"Chala","start":"00:03","end":"01:21","startHours":24.04361478306358,"endHours":25.350299384250032,"quality":"neutral"},{"name":"Labha","start":"01:21","end":"02:39","startHours":25.350299384250032,"endHours":26.656983985436487,"quality":"auspicious"},{"name":"Amṛta","start":"02:39","end":"03:58","startHours":26.656983985436487,"endHours":27.963668586622937,"quality":"auspicious"},{"name":"Kāla","start":"03:58","end":"05:16","startHours":27.963668586622937,"endHours":29.27035318780939,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:16","end":"06:16","startHours":5.270353187809393,"endHours":6.270353187809393,"planetary_lord":"Mars"},{"name":"Hora 2","start":"06:16","end":"07:16","startHours":6.270353187809393,"endHours":7.270353187809393,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"07:16","end":"08:16","startHours":7.270353187809393,"endHours":8.270353187809393,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"08:16","end":"09:16","startHours":8.270353187809393,"endHours":9.270353187809393,"planetary_lord":"Moon"},{"name":"Hora 5","start":"09:16","end":"10:16","startHours":9.270353187809393,"endHours":10.270353187809393,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"10:16","end":"11:16","startHours":10.270353187809393,"endHours":11.270353187809393,"planetary_lord":"Venus"},{"name":"Hora 7","start":"11:16","end":"12:16","startHours":11.270353187809393,"endHours":12.270353187809393,"planetary_lord":"Sun"},{"name":"Hora 8","start":"12:16","end":"13:16","startHours":12.270353187809393,"endHours":13.270353187809393,"planetary_lord":"Mars"},{"name":"Hora 9","start":"13:16","end":"14:16","startHours":13.270353187809393,"endHours":14.270353187809393,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"14:16","end":"15:16","startHours":14.270353187809393,"endHours":15.270353187809393,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"15:16","end":"16:16","startHours":15.270353187809393,"endHours":16.27035318780939,"planetary_lord":"Moon"},{"name":"Hora 12","start":"16:16","end":"17:16","startHours":16.27035318780939,"endHours":17.27035318780939,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"17:16","end":"18:16","startHours":17.27035318780939,"endHours":18.27035318780939,"planetary_lord":"Venus"},{"name":"Hora 14","start":"18:16","end":"19:16","startHours":18.27035318780939,"endHours":19.27035318780939,"planetary_lord":"Sun"},{"name":"Hora 15","start":"19:16","end":"20:16","startHours":19.27035318780939,"endHours":20.27035318780939,"planetary_lord":"Mars"},{"name":"Hora 16","start":"20:16","end":"21:16","startHours":20.27035318780939,"endHours":21.27035318780939,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"21:16","end":"22:16","startHours":21.27035318780939,"endHours":22.27035318780939,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"22:16","end":"23:16","startHours":22.27035318780939,"endHours":23.27035318780939,"planetary_lord":"Moon"},{"name":"Hora 19","start":"23:16","end":"00:16","startHours":23.27035318780939,"endHours":24.27035318780939,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"00:16","end":"01:16","startHours":24.27035318780939,"endHours":25.27035318780939,"planetary_lord":"Venus"},{"name":"Hora 21","start":"01:16","end":"02:16","startHours":25.27035318780939,"endHours":26.27035318780939,"planetary_lord":"Sun"},{"name":"Hora 22","start":"02:16","end":"03:16","startHours":26.27035318780939,"endHours":27.27035318780939,"planetary_lord":"Mars"},{"name":"Hora 23","start":"03:16","end":"04:16","startHours":27.27035318780939,"endHours":28.27035318780939,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"04:16","end":"05:16","startHours":28.27035318780939,"endHours":29.27035318780939,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Maghā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Karka","Siṃha","Tulā","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Vṛścika","Makara","Kumbha"]},"dishaShool":"North (Uttara)","chandraVasa":"North","rahuVasa":"North","anandadiYoga":{"name":"Mausala","quality":"Inauspicious"},"tropicalRitu":"Vasanta (Spring)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":19.949795651954346,"eotMinutes":3.5983130161851964,"ayanamsa":23.8164}},"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 Trayodaśī · Vikram 2054 Vikṛti · Śaka 1919 Īśvara"},"festivals":[{"id":"pradosha-vrata","name":"Pradoṣa Vrata","name_sanskrit":"प्रदोष व्रत","tradition":"Shaiva","associated_deity":"Śiva","significance":"Twilight worship of Śiva on Trayodaśī.","vrata":true,"detection":{"any_of":[{"tithi_number":13},{"tithi_number":28}]},"precedence":7}],"todays_walk":{"walk":{"id":"mangala-walk","name":"Maṅgala Walk","name_sanskrit":"मङ्गल यात्रा","type":"graha","description":"Right action + BG 2.31-38 (kṣatriya-dharma).","step_count":7,"url":"/walk/mangala-walk"},"reason":"Maṅgalavāra (Tuesday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":false,"location_specific":"lucknow"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga May 20, 1997 CE · Lucknow, Uttar Pradesh · Vidhyamitra","description":"May 20, 1997 CE for Lucknow, Uttar Pradesh: Śukla Trayodaśī, sūryodaya 05:16, sūryāsta 18:49.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/lucknow/1997-05-20","hreflang_alternates":{"en":"https://vidhyamitra.com/city/lucknow/1997-05-20","sa":"https://sa.vidhyamitra.com/city/lucknow/1997-05-20","hi":"https://hi.vidhyamitra.com/city/lucknow/1997-05-20","x-default":"https://vidhyamitra.com/city/lucknow/1997-05-20"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T18:43:05.743Z","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":"2026-06-01T18:43:05.743Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T18:43:05.743Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}