{"id":"vidhyamitra:city-day:mathura:1997-08-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/mathura/1997-08-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1997-08-18","date_display":"August 18, 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":8,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450678.770833,"kali_year":5099,"ahargana":1862213.2708,"sun":{"sidereal_longitude":120.7056,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":294.1955,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":173.4899,"elapsed_within_tithi_degrees":5.4899},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1,"moon_longitude":294.1955,"elapsed_within_degrees":0.8621},"yoga":{"number":5,"name":"Śobhana","sum_longitude":54.9011},"karana":{"half_tithi_index":28,"name":"Viṣṭi"},"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":1997,"month":8,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2450678.770833,"ahargana":1862213.2708,"kali_year":5099,"ayanamsa_lahiri":23.8199,"grahas":{"sun":{"sidereal_longitude":121.32800700000001,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":295.33540700000003,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false,"latitude":2.6928},"mars":{"sidereal_longitude":188.482307,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":142.58790699999997,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":true},"jupiter":{"sidereal_longitude":292.098207,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":true},"venus":{"sidereal_longitude":156.72480700000006,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":356.266407,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":true},"rahu":{"sidereal_longitude":150.9793,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":330.9793,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","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":1997,"month":8,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450678.770833,"kali_year":5099,"ahargana":1862213.2708,"sun":{"sidereal_longitude":120.7056,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":294.1955,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":173.4899,"elapsed_within_tithi_degrees":5.4899},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1,"moon_longitude":294.1955,"elapsed_within_degrees":0.8621},"yoga":{"number":5,"name":"Śobhana","sum_longitude":54.9011},"karana":{"half_tithi_index":28,"name":"Viṣṭi"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.693,"elongation":173.49},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.693,"opposition_distance":6.51}},"eclipse_window_40days":[{"offset_days":15,"type":"solar","occurs":true,"moon_latitude":-1.043,"elongation":1.659}]},"city":{"slug":"mathura","name":"Mathurā","lat":27.4924,"lon":77.6737,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"tier2":{"city":{"slug":"mathura","name":"Mathurā","lat":27.4924,"lon":77.6737,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"sunriseLocal":"05:51","sunsetLocal":"18:55","solarNoonLocal":"12:23","dayLengthHours":13.059843600507193,"dayLengthDisplay":"13 Hours 03 Mins 35 Secs","nightLengthDisplay":"10 Hours 56 Mins 25 Secs","moonriseLocal":"18:28","moonsetLocal":"05:29","rahuKala":{"name":"Rāhu Kāla","start":"07:29","end":"09:07","startHours":7.48311294515831,"endHours":9.115593395221708,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:45","end":"12:23","startHours":10.74807384528511,"endHours":12.380554295348507,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"14:01","end":"15:39","startHours":14.013034745411908,"endHours":15.645515195475305,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:54","end":"09:20","startHours":8.897929335213256,"endHours":9.333257455230163,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:24","end":"06:45","startHours":6.394792645116044,"endHours":6.743055141129569,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:57","end":"12:49","startHours":11.9452261753316,"endHours":12.815882415365413,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:07","end":"04:59","startHours":4.109320015027285,"endHours":4.979976255061098,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:46","end":"05:51","startHours":4.762312195052645,"endHours":5.850632495094911,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:33","end":"15:26","startHours":14.557194895433039,"endHours":15.427851135466852,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:43","end":"19:07","startHours":18.710476095602104,"endHours":19.110476095602102,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:55","end":"19:27","startHours":18.910476095602103,"endHours":19.454636245623234,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:40","end":"20:25","startHours":18.660476095602103,"endHours":20.410476095602103,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:57","end":"00:49","startHours":23.9452261753316,"endHours":24.81588241536541,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"05:51","end":"07:29","startHours":5.850632495094911,"endHours":7.48311294515831,"quality":"auspicious"},{"name":"Kāla","start":"07:29","end":"09:07","startHours":7.48311294515831,"endHours":9.115593395221708,"quality":"inauspicious"},{"name":"Śubha","start":"09:07","end":"10:45","startHours":9.115593395221708,"endHours":10.74807384528511,"quality":"auspicious"},{"name":"Roga","start":"10:45","end":"12:23","startHours":10.74807384528511,"endHours":12.380554295348507,"quality":"inauspicious"},{"name":"Udveg","start":"12:23","end":"14:01","startHours":12.380554295348507,"endHours":14.013034745411908,"quality":"inauspicious"},{"name":"Chala","start":"14:01","end":"15:39","startHours":14.013034745411908,"endHours":15.645515195475305,"quality":"neutral"},{"name":"Labha","start":"15:39","end":"17:17","startHours":15.645515195475305,"endHours":17.277995645538706,"quality":"auspicious"},{"name":"Amṛta","start":"17:17","end":"18:55","startHours":17.277995645538706,"endHours":18.910476095602103,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:55","end":"20:17","startHours":18.910476095602103,"endHours":20.277995645538702,"quality":"neutral"},{"name":"Labha","start":"20:17","end":"21:39","startHours":20.277995645538702,"endHours":21.645515195475305,"quality":"auspicious"},{"name":"Amṛta","start":"21:39","end":"23:01","startHours":21.645515195475305,"endHours":23.013034745411908,"quality":"auspicious"},{"name":"Kāla","start":"23:01","end":"00:23","startHours":23.013034745411908,"endHours":24.380554295348507,"quality":"inauspicious"},{"name":"Śubha","start":"00:23","end":"01:45","startHours":24.380554295348507,"endHours":25.748073845285106,"quality":"auspicious"},{"name":"Roga","start":"01:45","end":"03:07","startHours":25.748073845285106,"endHours":27.11559339522171,"quality":"inauspicious"},{"name":"Udveg","start":"03:07","end":"04:29","startHours":27.11559339522171,"endHours":28.48311294515831,"quality":"inauspicious"},{"name":"Chala","start":"04:29","end":"05:51","startHours":28.48311294515831,"endHours":29.85063249509491,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"05:51","end":"06:51","startHours":5.850632495094911,"endHours":6.850632495094911,"planetary_lord":"Moon"},{"name":"Hora 2","start":"06:51","end":"07:51","startHours":6.850632495094911,"endHours":7.850632495094911,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"07:51","end":"08:51","startHours":7.850632495094911,"endHours":8.85063249509491,"planetary_lord":"Venus"},{"name":"Hora 4","start":"08:51","end":"09:51","startHours":8.85063249509491,"endHours":9.85063249509491,"planetary_lord":"Sun"},{"name":"Hora 5","start":"09:51","end":"10:51","startHours":9.85063249509491,"endHours":10.85063249509491,"planetary_lord":"Mars"},{"name":"Hora 6","start":"10:51","end":"11:51","startHours":10.85063249509491,"endHours":11.85063249509491,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"11:51","end":"12:51","startHours":11.85063249509491,"endHours":12.85063249509491,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"12:51","end":"13:51","startHours":12.85063249509491,"endHours":13.85063249509491,"planetary_lord":"Moon"},{"name":"Hora 9","start":"13:51","end":"14:51","startHours":13.85063249509491,"endHours":14.85063249509491,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"14:51","end":"15:51","startHours":14.85063249509491,"endHours":15.85063249509491,"planetary_lord":"Venus"},{"name":"Hora 11","start":"15:51","end":"16:51","startHours":15.85063249509491,"endHours":16.85063249509491,"planetary_lord":"Sun"},{"name":"Hora 12","start":"16:51","end":"17:51","startHours":16.85063249509491,"endHours":17.85063249509491,"planetary_lord":"Mars"},{"name":"Hora 13","start":"17:51","end":"18:51","startHours":17.85063249509491,"endHours":18.85063249509491,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"18:51","end":"19:51","startHours":18.85063249509491,"endHours":19.85063249509491,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"19:51","end":"20:51","startHours":19.85063249509491,"endHours":20.85063249509491,"planetary_lord":"Moon"},{"name":"Hora 16","start":"20:51","end":"21:51","startHours":20.85063249509491,"endHours":21.85063249509491,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"21:51","end":"22:51","startHours":21.85063249509491,"endHours":22.85063249509491,"planetary_lord":"Venus"},{"name":"Hora 18","start":"22:51","end":"23:51","startHours":22.85063249509491,"endHours":23.85063249509491,"planetary_lord":"Sun"},{"name":"Hora 19","start":"23:51","end":"00:51","startHours":23.85063249509491,"endHours":24.85063249509491,"planetary_lord":"Mars"},{"name":"Hora 20","start":"00:51","end":"01:51","startHours":24.85063249509491,"endHours":25.85063249509491,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"01:51","end":"02:51","startHours":25.85063249509491,"endHours":26.85063249509491,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"02:51","end":"03:51","startHours":26.85063249509491,"endHours":27.85063249509491,"planetary_lord":"Moon"},{"name":"Hora 23","start":"03:51","end":"04:51","startHours":27.85063249509491,"endHours":28.85063249509491,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"04:51","end":"05:51","startHours":28.85063249509491,"endHours":29.85063249509491,"planetary_lord":"Venus"}],"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":["Mithuna","Karka","Tulā","Vṛścika","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Dhanu","Kumbha"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-East","rahuVasa":"North-East","anandadiYoga":{"name":"Sushira","quality":"Auspicious"},"drikRitu":"Varṣā (Monsoon)","vedicRitu":"Varṣā (Monsoon)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":13.137466710510866,"eotMinutes":-3.5280577209103767,"ayanamsa":23.8199}},"calendars":{"vikram_samvat":2054,"vikram_samvatsara":"Vikṛti","saka_samvat":1919,"saka_samvatsara":"Īśvara","bengali_samvat":1404,"malayalam_era":1173,"nanakshahi_year":528,"lunar_month":"Bhādrapada","lunar_month_paksha_full":"Bhādrapada Śukla Pakṣa","solar_month":"Siṃha (Āvaṇi)","ritu":"Varṣā (Monsoon)","display_summary":"Bhādrapada Śukla Pūrṇimā · Vikram 2054 Vikṛti · Śaka 1919 Īśvara"},"festivals":[{"id":"simha-sankranti","name":"Siṁha Saṅkrānti","name_sanskrit":"सिंह सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Leo.","vrata":false,"detection":{"sun_rashi":"Siṃha"},"precedence":5}],"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":"-3137-10-04","event":"Mahābhārata Day 1 (Bhagavad Gītā delivered)","chart_id":"krishna","shared_marker":"same Śukla Pūrṇimā","url":"/day/-3137-10-04","relevance":0.5},{"historical_date":"-0562-04-11","event":"Bhagavān Buddha's birth at Lumbinī","chart_id":"buddha","shared_marker":"same Śukla Pūrṇimā","url":"/day/-0562-04-11","relevance":0.5}]},"validity":{"eternal":false,"location_specific":"mathura"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga August 18, 1997 CE · Mathurā · Vidhyamitra","description":"August 18, 1997 CE for Mathurā: Śukla Pūrṇimā, sūryodaya 05:51, sūryāsta 18:55.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/mathura/1997-08-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/mathura/1997-08-18","sa":"https://sa.vidhyamitra.com/city/mathura/1997-08-18","hi":"https://hi.vidhyamitra.com/city/mathura/1997-08-18","x-default":"https://vidhyamitra.com/city/mathura/1997-08-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-14T09:56:21.203Z","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":"2026-05-14T09:56:21.203Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-14T09:56:21.203Z","pillar_versions":{"BOB-History":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}