{"id":"vidhyamitra:city-day:mathura:1997-02-01:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/mathura/1997-02-01","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1997-02-01","date_display":"February 1, 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":2,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450480.770833,"kali_year":5098,"ahargana":1862015.2708,"sun":{"sidereal_longitude":288.4297,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":204.7145,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":24,"name":"Navamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Navamī","elongation_degrees":276.2848,"elapsed_within_tithi_degrees":0.2848},"nakshatra":{"number":16,"name":"Viśākhā","pada":2,"moon_longitude":204.7145,"elapsed_within_degrees":4.7145},"yoga":{"number":10,"name":"Gaṇḍa","sum_longitude":133.1442},"karana":{"half_tithi_index":46,"name":"Taitila"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"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":2,"day":1,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2450480.770833,"ahargana":1862015.2708,"kali_year":5098,"ayanamsa_lahiri":23.8123,"grahas":{"sun":{"sidereal_longitude":288.40397200000007,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"moon":{"sidereal_longitude":200.98607200000004,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":1},"retrograde":false,"latitude":3.0813},"mars":{"sidereal_longitude":161.90907200000004,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":265.01357200000007,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":278.687272,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":273.57657199999994,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":339.786772,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":161.4703,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":341.4703,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":3},"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":2,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450480.770833,"kali_year":5098,"ahargana":1862015.2708,"sun":{"sidereal_longitude":288.4297,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":204.7145,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":24,"name":"Navamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Navamī","elongation_degrees":276.2848,"elapsed_within_tithi_degrees":0.2848},"nakshatra":{"number":16,"name":"Viśākhā","pada":2,"moon_longitude":204.7145,"elapsed_within_degrees":4.7145},"yoga":{"number":10,"name":"Gaṇḍa","sum_longitude":133.1442},"karana":{"half_tithi_index":46,"name":"Taitila"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.081,"elongation":83.715},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.081,"opposition_distance":96.285}},"eclipse_window_40days":[]},"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":"07:06","sunsetLocal":"18:00","solarNoonLocal":"12:33","dayLengthHours":10.901801911043208,"dayLengthDisplay":"10 Hours 54 Mins 06 Secs","nightLengthDisplay":"13 Hours 05 Mins 54 Secs","moonriseLocal":"01:16","moonsetLocal":"12:11","rahuKala":{"name":"Rāhu Kāla","start":"09:49","end":"11:11","startHours":9.824458657529124,"endHours":11.187183896409525,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:55","end":"15:17","startHours":13.912634374170327,"endHours":15.275359613050728,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:06","end":"08:28","startHours":7.099008179768322,"endHours":8.461733418648723,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:39","end":"10:00","startHours":9.642761959011738,"endHours":10.006155356046511,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:33","end":"07:51","startHours":7.553249926061789,"endHours":7.843964643689608,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:11","end":"12:55","startHours":12.186515738255153,"endHours":12.9133025323247,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:39","end":"06:22","startHours":5.645434591629228,"endHours":6.372221385698776,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:11","end":"07:06","startHours":6.190524687181388,"endHours":7.099008179768322,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:22","end":"15:06","startHours":14.366876120463793,"endHours":15.09366291453334,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:48","end":"18:12","startHours":17.80081009081153,"endHours":18.20081009081153,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:00","end":"18:27","startHours":18.00081009081153,"endHours":18.455051837104996,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:45","end":"19:30","startHours":17.75081009081153,"endHours":19.50081009081153,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:11","end":"00:55","startHours":24.186515738255153,"endHours":24.9133025323247,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"07:06","end":"08:28","startHours":7.099008179768322,"endHours":8.461733418648723,"quality":"inauspicious"},{"name":"Śubha","start":"08:28","end":"09:49","startHours":8.461733418648723,"endHours":9.824458657529124,"quality":"auspicious"},{"name":"Roga","start":"09:49","end":"11:11","startHours":9.824458657529124,"endHours":11.187183896409525,"quality":"inauspicious"},{"name":"Udveg","start":"11:11","end":"12:33","startHours":11.187183896409525,"endHours":12.549909135289926,"quality":"inauspicious"},{"name":"Chala","start":"12:33","end":"13:55","startHours":12.549909135289926,"endHours":13.912634374170327,"quality":"neutral"},{"name":"Labha","start":"13:55","end":"15:17","startHours":13.912634374170327,"endHours":15.275359613050728,"quality":"auspicious"},{"name":"Amṛta","start":"15:17","end":"16:38","startHours":15.275359613050728,"endHours":16.63808485193113,"quality":"auspicious"},{"name":"Kāla","start":"16:38","end":"18:00","startHours":16.63808485193113,"endHours":18.00081009081153,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"18:00","end":"19:38","startHours":18.00081009081153,"endHours":19.63808485193113,"quality":"auspicious"},{"name":"Amṛta","start":"19:38","end":"21:17","startHours":19.63808485193113,"endHours":21.27535961305073,"quality":"auspicious"},{"name":"Kāla","start":"21:17","end":"22:55","startHours":21.27535961305073,"endHours":22.912634374170327,"quality":"inauspicious"},{"name":"Śubha","start":"22:55","end":"00:33","startHours":22.912634374170327,"endHours":24.549909135289926,"quality":"auspicious"},{"name":"Roga","start":"00:33","end":"02:11","startHours":24.549909135289926,"endHours":26.187183896409525,"quality":"inauspicious"},{"name":"Udveg","start":"02:11","end":"03:49","startHours":26.187183896409525,"endHours":27.824458657529124,"quality":"inauspicious"},{"name":"Chala","start":"03:49","end":"05:28","startHours":27.824458657529124,"endHours":29.461733418648723,"quality":"neutral"},{"name":"Labha","start":"05:28","end":"07:06","startHours":29.461733418648723,"endHours":31.099008179768322,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:06","end":"08:06","startHours":7.099008179768322,"endHours":8.099008179768322,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"08:06","end":"09:06","startHours":8.099008179768322,"endHours":9.099008179768322,"planetary_lord":"Moon"},{"name":"Hora 3","start":"09:06","end":"10:06","startHours":9.099008179768322,"endHours":10.099008179768322,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"10:06","end":"11:06","startHours":10.099008179768322,"endHours":11.099008179768322,"planetary_lord":"Venus"},{"name":"Hora 5","start":"11:06","end":"12:06","startHours":11.099008179768322,"endHours":12.099008179768322,"planetary_lord":"Sun"},{"name":"Hora 6","start":"12:06","end":"13:06","startHours":12.099008179768322,"endHours":13.099008179768322,"planetary_lord":"Mars"},{"name":"Hora 7","start":"13:06","end":"14:06","startHours":13.099008179768322,"endHours":14.099008179768322,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"14:06","end":"15:06","startHours":14.099008179768322,"endHours":15.099008179768322,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"15:06","end":"16:06","startHours":15.099008179768322,"endHours":16.099008179768322,"planetary_lord":"Moon"},{"name":"Hora 10","start":"16:06","end":"17:06","startHours":16.099008179768322,"endHours":17.099008179768322,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"17:06","end":"18:06","startHours":17.099008179768322,"endHours":18.099008179768322,"planetary_lord":"Venus"},{"name":"Hora 12","start":"18:06","end":"19:06","startHours":18.099008179768322,"endHours":19.099008179768322,"planetary_lord":"Sun"},{"name":"Hora 13","start":"19:06","end":"20:06","startHours":19.099008179768322,"endHours":20.099008179768322,"planetary_lord":"Mars"},{"name":"Hora 14","start":"20:06","end":"21:06","startHours":20.099008179768322,"endHours":21.099008179768322,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"21:06","end":"22:06","startHours":21.099008179768322,"endHours":22.099008179768322,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"22:06","end":"23:06","startHours":22.099008179768322,"endHours":23.099008179768322,"planetary_lord":"Moon"},{"name":"Hora 17","start":"23:06","end":"00:06","startHours":23.099008179768322,"endHours":24.099008179768322,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"00:06","end":"01:06","startHours":24.099008179768322,"endHours":25.099008179768322,"planetary_lord":"Venus"},{"name":"Hora 19","start":"01:06","end":"02:06","startHours":25.099008179768322,"endHours":26.099008179768322,"planetary_lord":"Sun"},{"name":"Hora 20","start":"02:06","end":"03:06","startHours":26.099008179768322,"endHours":27.099008179768322,"planetary_lord":"Mars"},{"name":"Hora 21","start":"03:06","end":"04:06","startHours":27.099008179768322,"endHours":28.099008179768322,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"04:06","end":"05:06","startHours":28.099008179768322,"endHours":29.099008179768322,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"05:06","end":"06:06","startHours":29.099008179768322,"endHours":30.099008179768322,"planetary_lord":"Moon"},{"name":"Hora 24","start":"06:06","end":"07:06","startHours":30.099008179768322,"endHours":31.099008179768322,"planetary_lord":"Mercury"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Hasta","Citrā","Svātī","Viśākhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"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":"East (Pūrva)","chandraVasa":"North","rahuVasa":"East","anandadiYoga":{"name":"Maitra","quality":"Auspicious"},"drikRitu":"Śiśira (Winter) (Drik)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-17.131523571280432,"eotMinutes":-13.689348117395623,"ayanamsa":23.8123}},"calendars":{"vikram_samvat":2054,"vikram_samvatsara":"Vikṛti","saka_samvat":1919,"saka_samvatsara":"Īśvara","bengali_samvat":1404,"malayalam_era":1173,"nanakshahi_year":528,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Kṛṣṇa Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Kṛṣṇa Navamī · Vikram 2054 Vikṛti · Śaka 1919 Īśvara"},"festivals":[{"id":"makara-sankranti","name":"Makara Saṅkrānti (Uttarāyaṇa)","name_sanskrit":"मकर सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Capricorn; Uttarāyaṇa (north-going) begins. Bhīṣma's chosen mahaprasthāna time.","vrata":true,"detection":{"sun_rashi":"Makara"},"precedence":1,"sources":["Mahābhārata Bhīṣma-Stuti","Sūrya-Siddhānta"]},{"id":"pongal","name":"Pongal / Thai Pongal","name_sanskrit":"पोङ्गल","tradition":"Regional","associated_deity":"Sūrya Bhagavān","significance":"Tamil 4-day harvest festival; coincides with Makara Saṅkrānti.","vrata":false,"detection":{"sun_rashi":"Makara"},"precedence":2}],"todays_walk":{"walk":{"id":"shani-walk","name":"Śani Walk","name_sanskrit":"शनि यात्रा","type":"graha","description":"Tapas + endurance + BG 17.14-19.","step_count":7,"url":"/walk/shani-walk"},"reason":"Śanivāra (Saturday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-0562-04-11","event":"Bhagavān Buddha's birth at Lumbinī","chart_id":"buddha","shared_marker":"same Viśākhā","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 February 1, 1997 CE · Mathurā · Vidhyamitra","description":"February 1, 1997 CE for Mathurā: Kṛṣṇa Navamī, sūryodaya 07:06, sūryāsta 18:00.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/mathura/1997-02-01","hreflang_alternates":{"en":"https://vidhyamitra.com/city/mathura/1997-02-01","sa":"https://sa.vidhyamitra.com/city/mathura/1997-02-01","hi":"https://hi.vidhyamitra.com/city/mathura/1997-02-01","x-default":"https://vidhyamitra.com/city/mathura/1997-02-01"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-14T17:30:22.056Z","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":"2026-05-14T17:30:22.056Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-14T17:30:22.056Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}