{"id":"vidhyamitra:city-day:mathura:1998-12-01:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/mathura/1998-12-01","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1998-12-01","date_display":"December 1, 1998 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":1998,"month":12,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2451148.770833,"kali_year":5100,"ahargana":1862683.2708,"sun":{"sidereal_longitude":224.2959,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":10.0574,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":145.7615,"elapsed_within_tithi_degrees":1.7615},"nakshatra":{"number":1,"name":"Aśvinī","pada":4,"moon_longitude":10.0574,"elapsed_within_degrees":10.0574},"yoga":{"number":18,"name":"Varīyān","sum_longitude":234.3532},"karana":{"half_tithi_index":24,"name":"Kaulava"},"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":1998,"month":12,"day":1,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2451148.770833,"ahargana":1862683.2708,"kali_year":5100,"ayanamsa_lahiri":23.8378,"grahas":{"sun":{"sidereal_longitude":224.79604900000004,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":8.051648999999998,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":3},"retrograde":false,"latitude":-4.0431},"mars":{"sidereal_longitude":158.18714899999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":226.316549,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":true},"jupiter":{"sidereal_longitude":324.837949,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":232.72224899999992,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":3.592948999999976,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":126.0765,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":306.0765,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","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":1998,"month":12,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2451148.770833,"kali_year":5100,"ahargana":1862683.2708,"sun":{"sidereal_longitude":224.2959,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":10.0574,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":145.7615,"elapsed_within_tithi_degrees":1.7615},"nakshatra":{"number":1,"name":"Aśvinī","pada":4,"moon_longitude":10.0574,"elapsed_within_degrees":10.0574},"yoga":{"number":18,"name":"Varīyān","sum_longitude":234.3532},"karana":{"half_tithi_index":24,"name":"Kaulava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.043,"elongation":145.761},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.043,"opposition_distance":34.239}},"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":"06:53","sunsetLocal":"17:25","solarNoonLocal":"12:09","dayLengthHours":10.540641563979591,"dayLengthDisplay":"10 Hours 32 Mins 26 Secs","nightLengthDisplay":"13 Hours 27 Mins 34 Secs","moonriseLocal":"15:14","moonsetLocal":"04:11","rahuKala":{"name":"Rāhu Kāla","start":"14:47","end":"16:06","startHours":14.788062880988225,"endHours":16.105643076485674,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:31","end":"10:50","startHours":9.51774209899843,"endHours":10.835322294495878,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:09","end":"13:28","startHours":12.152902489993327,"endHours":13.470482685490776,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:21","end":"09:42","startHours":9.34206473959877,"endHours":9.69341945839809,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:19","end":"07:36","startHours":7.321775106502682,"endHours":7.602858881542137,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:48","end":"12:30","startHours":11.801547771194008,"endHours":12.504257208792646,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:29","end":"06:11","startHours":5.477162832806254,"endHours":6.179872270404893,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:00","end":"06:53","startHours":6.004194911005233,"endHours":6.882581708003532,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:55","end":"14:37","startHours":13.909676083989925,"endHours":14.612385521588564,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:13","end":"17:37","startHours":17.223223271983123,"endHours":17.62322327198312,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:25","end":"17:52","startHours":17.423223271983122,"endHours":17.862416670482272,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:10","end":"18:55","startHours":17.173223271983122,"endHours":18.923223271983122,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:48","end":"00:30","startHours":23.801547771194006,"endHours":24.504257208792648,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"06:53","end":"08:12","startHours":6.882581708003532,"endHours":8.20016190350098,"quality":"inauspicious"},{"name":"Udveg","start":"08:12","end":"09:31","startHours":8.20016190350098,"endHours":9.51774209899843,"quality":"inauspicious"},{"name":"Chala","start":"09:31","end":"10:50","startHours":9.51774209899843,"endHours":10.835322294495878,"quality":"neutral"},{"name":"Labha","start":"10:50","end":"12:09","startHours":10.835322294495878,"endHours":12.152902489993327,"quality":"auspicious"},{"name":"Amṛta","start":"12:09","end":"13:28","startHours":12.152902489993327,"endHours":13.470482685490776,"quality":"auspicious"},{"name":"Kāla","start":"13:28","end":"14:47","startHours":13.470482685490776,"endHours":14.788062880988225,"quality":"inauspicious"},{"name":"Śubha","start":"14:47","end":"16:06","startHours":14.788062880988225,"endHours":16.105643076485674,"quality":"auspicious"},{"name":"Roga","start":"16:06","end":"17:25","startHours":16.105643076485674,"endHours":17.423223271983122,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"17:25","end":"19:06","startHours":17.423223271983122,"endHours":19.105643076485674,"quality":"inauspicious"},{"name":"Śubha","start":"19:06","end":"20:47","startHours":19.105643076485674,"endHours":20.788062880988225,"quality":"auspicious"},{"name":"Roga","start":"20:47","end":"22:28","startHours":20.788062880988225,"endHours":22.470482685490776,"quality":"inauspicious"},{"name":"Udveg","start":"22:28","end":"00:09","startHours":22.470482685490776,"endHours":24.152902489993327,"quality":"inauspicious"},{"name":"Chala","start":"00:09","end":"01:50","startHours":24.152902489993327,"endHours":25.835322294495878,"quality":"neutral"},{"name":"Labha","start":"01:50","end":"03:31","startHours":25.835322294495878,"endHours":27.51774209899843,"quality":"auspicious"},{"name":"Amṛta","start":"03:31","end":"05:12","startHours":27.51774209899843,"endHours":29.20016190350098,"quality":"auspicious"},{"name":"Kāla","start":"05:12","end":"06:53","startHours":29.20016190350098,"endHours":30.88258170800353,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:53","end":"07:53","startHours":6.882581708003532,"endHours":7.882581708003532,"planetary_lord":"Mars"},{"name":"Hora 2","start":"07:53","end":"08:53","startHours":7.882581708003532,"endHours":8.882581708003531,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"08:53","end":"09:53","startHours":8.882581708003531,"endHours":9.882581708003531,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"09:53","end":"10:53","startHours":9.882581708003531,"endHours":10.882581708003531,"planetary_lord":"Moon"},{"name":"Hora 5","start":"10:53","end":"11:53","startHours":10.882581708003531,"endHours":11.882581708003531,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"11:53","end":"12:53","startHours":11.882581708003531,"endHours":12.882581708003531,"planetary_lord":"Venus"},{"name":"Hora 7","start":"12:53","end":"13:53","startHours":12.882581708003531,"endHours":13.882581708003531,"planetary_lord":"Sun"},{"name":"Hora 8","start":"13:53","end":"14:53","startHours":13.882581708003531,"endHours":14.882581708003531,"planetary_lord":"Mars"},{"name":"Hora 9","start":"14:53","end":"15:53","startHours":14.882581708003531,"endHours":15.882581708003531,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"15:53","end":"16:53","startHours":15.882581708003531,"endHours":16.88258170800353,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"16:53","end":"17:53","startHours":16.88258170800353,"endHours":17.88258170800353,"planetary_lord":"Moon"},{"name":"Hora 12","start":"17:53","end":"18:53","startHours":17.88258170800353,"endHours":18.88258170800353,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"18:53","end":"19:53","startHours":18.88258170800353,"endHours":19.88258170800353,"planetary_lord":"Venus"},{"name":"Hora 14","start":"19:53","end":"20:53","startHours":19.88258170800353,"endHours":20.88258170800353,"planetary_lord":"Sun"},{"name":"Hora 15","start":"20:53","end":"21:53","startHours":20.88258170800353,"endHours":21.88258170800353,"planetary_lord":"Mars"},{"name":"Hora 16","start":"21:53","end":"22:53","startHours":21.88258170800353,"endHours":22.88258170800353,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"22:53","end":"23:53","startHours":22.88258170800353,"endHours":23.88258170800353,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"23:53","end":"00:53","startHours":23.88258170800353,"endHours":24.88258170800353,"planetary_lord":"Moon"},{"name":"Hora 19","start":"00:53","end":"01:53","startHours":24.88258170800353,"endHours":25.88258170800353,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"01:53","end":"02:53","startHours":25.88258170800353,"endHours":26.88258170800353,"planetary_lord":"Venus"},{"name":"Hora 21","start":"02:53","end":"03:53","startHours":26.88258170800353,"endHours":27.88258170800353,"planetary_lord":"Sun"},{"name":"Hora 22","start":"03:53","end":"04:53","startHours":27.88258170800353,"endHours":28.88258170800353,"planetary_lord":"Mars"},{"name":"Hora 23","start":"04:53","end":"05:53","startHours":28.88258170800353,"endHours":29.88258170800353,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"05:53","end":"06:53","startHours":29.88258170800353,"endHours":30.88258170800353,"planetary_lord":"Saturn"}],"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":["Meṣa","Mithuna","Kanyā","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Karka","Siṃha","Vṛścika","Dhanu","Mīna"]},"dishaShool":"North (Uttara)","chandraVasa":"East","rahuVasa":"North","anandadiYoga":{"name":"Vajra","quality":"Inauspicious"},"drikRitu":"Hemanta (Pre-winter) (Drik)","vedicRitu":"Śarad (Autumn)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-21.740090547025332,"eotMinutes":10.131050600400467,"ayanamsa":23.8378}},"calendars":{"vikram_samvat":2055,"vikram_samvatsara":"Khara","saka_samvat":1920,"saka_samvatsara":"Bahudhānya","bengali_samvat":1405,"malayalam_era":1174,"nanakshahi_year":529,"lunar_month":"Mārgaśīrṣa","lunar_month_paksha_full":"Mārgaśīrṣa Śukla Pakṣa","solar_month":"Vṛścika (Kārttikai)","ritu":"Hemanta (Pre-winter)","display_summary":"Mārgaśīrṣa Śukla Trayodaśī · Vikram 2055 Khara · Śaka 1920 Bahudhānya"},"festivals":[{"id":"vrischika-sankranti","name":"Vṛścika Saṅkrānti","name_sanskrit":"वृश्चिक सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Scorpio.","vrata":false,"detection":{"sun_rashi":"Vṛścika"},"precedence":5},{"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":[{"historical_date":"-3101-02-18","event":"Kali Yuga Epoch","chart_id":"kali-yuga-epoch","shared_marker":"same Aśvinī","url":"/day/-3101-02-18","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 December 1, 1998 CE · Mathurā · Vidhyamitra","description":"December 1, 1998 CE for Mathurā: Śukla Trayodaśī, sūryodaya 06:53, sūryāsta 17:25.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/mathura/1998-12-01","hreflang_alternates":{"en":"https://vidhyamitra.com/city/mathura/1998-12-01","sa":"https://sa.vidhyamitra.com/city/mathura/1998-12-01","hi":"https://hi.vidhyamitra.com/city/mathura/1998-12-01","x-default":"https://vidhyamitra.com/city/mathura/1998-12-01"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-14T18:51:52.515Z","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":"2026-05-14T18:51:52.515Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-14T18:51:52.515Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}