{"id":"vidhyamitra:city-day:vrindavan:1998-01-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/vrindavan/1998-01-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1998-01-13","date_display":"January 13, 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":1,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450826.770833,"kali_year":5099,"ahargana":1862361.2708,"sun":{"sidereal_longitude":268.6926,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":94.1993,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":16,"name":"Pratipada","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Pratipada","elongation_degrees":185.5066,"elapsed_within_tithi_degrees":5.5066},"nakshatra":{"number":8,"name":"Puṣya","pada":1,"moon_longitude":94.1993,"elapsed_within_degrees":0.866},"yoga":{"number":1,"name":"Viṣkambha","sum_longitude":2.8919},"karana":{"half_tithi_index":30,"name":"Bālava"},"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":1,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2450826.770833,"ahargana":1862361.2708,"kali_year":5099,"ayanamsa_lahiri":23.8255,"grahas":{"sun":{"sidereal_longitude":268.8171520000001,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":92.50875200000002,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":7,"name":"Punarvasu","pada":4},"retrograde":false,"latitude":-3.3915},"mars":{"sidereal_longitude":296.44905199999994,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":246.573752,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":301.001452,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":274.32995200000005,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":true},"saturn":{"sidereal_longitude":350.370752,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":143.1376,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":323.1376,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva 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":1998,"month":1,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450826.770833,"kali_year":5099,"ahargana":1862361.2708,"sun":{"sidereal_longitude":268.6926,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":94.1993,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":16,"name":"Pratipada","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Pratipada","elongation_degrees":185.5066,"elapsed_within_tithi_degrees":5.5066},"nakshatra":{"number":8,"name":"Puṣya","pada":1,"moon_longitude":94.1993,"elapsed_within_degrees":0.866},"yoga":{"number":1,"name":"Viṣkambha","sum_longitude":2.8919},"karana":{"half_tithi_index":30,"name":"Bālava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.392,"elongation":174.493},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.392,"opposition_distance":5.507}},"eclipse_window_40days":[]},"city":{"slug":"vrindavan","name":"Vṛndāvana","lat":27.565,"lon":77.6593,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"tier2":{"city":{"slug":"vrindavan","name":"Vṛndāvana","lat":27.565,"lon":77.6593,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"sunriseLocal":"07:11","sunsetLocal":"17:45","solarNoonLocal":"12:28","dayLengthHours":10.552326764959641,"dayLengthDisplay":"10 Hours 33 Mins 08 Secs","nightLengthDisplay":"13 Hours 26 Mins 52 Secs","moonriseLocal":"17:54","moonsetLocal":"07:32","rahuKala":{"name":"Rāhu Kāla","start":"15:06","end":"16:25","startHours":15.104727216096137,"endHours":16.423768061716093,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:50","end":"11:09","startHours":9.828563833616316,"endHours":11.147604679236272,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:28","end":"13:47","startHours":12.466645524856226,"endHours":13.785686370476181,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:39","end":"10:00","startHours":9.65269172086699,"endHours":10.004435946365643,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:38","end":"07:55","startHours":7.630162424249725,"endHours":7.911557804648648,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:07","end":"12:49","startHours":12.114901299357573,"endHours":12.818389750354882,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:47","end":"06:29","startHours":5.783505240381787,"endHours":6.486993691379096,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:19","end":"07:11","startHours":6.311121578629769,"endHours":7.190482142376406,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:14","end":"14:56","startHours":14.2253666523495,"endHours":14.928855103346809,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:33","end":"17:57","startHours":17.54280890733605,"endHours":17.942808907336047,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:45","end":"18:11","startHours":17.742808907336048,"endHours":18.182489189209367,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:30","end":"19:15","startHours":17.492808907336048,"endHours":19.242808907336048,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:07","end":"00:49","startHours":24.11490129935757,"endHours":24.818389750354882,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"07:11","end":"08:31","startHours":7.190482142376406,"endHours":8.50952298799636,"quality":"inauspicious"},{"name":"Udveg","start":"08:31","end":"09:50","startHours":8.50952298799636,"endHours":9.828563833616316,"quality":"inauspicious"},{"name":"Chala","start":"09:50","end":"11:09","startHours":9.828563833616316,"endHours":11.147604679236272,"quality":"neutral"},{"name":"Labha","start":"11:09","end":"12:28","startHours":11.147604679236272,"endHours":12.466645524856226,"quality":"auspicious"},{"name":"Amṛta","start":"12:28","end":"13:47","startHours":12.466645524856226,"endHours":13.785686370476181,"quality":"auspicious"},{"name":"Kāla","start":"13:47","end":"15:06","startHours":13.785686370476181,"endHours":15.104727216096137,"quality":"inauspicious"},{"name":"Śubha","start":"15:06","end":"16:25","startHours":15.104727216096137,"endHours":16.423768061716093,"quality":"auspicious"},{"name":"Roga","start":"16:25","end":"17:45","startHours":16.423768061716093,"endHours":17.742808907336048,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"17:45","end":"19:25","startHours":17.742808907336048,"endHours":19.423768061716093,"quality":"inauspicious"},{"name":"Śubha","start":"19:25","end":"21:06","startHours":19.423768061716093,"endHours":21.104727216096137,"quality":"auspicious"},{"name":"Roga","start":"21:06","end":"22:47","startHours":21.104727216096137,"endHours":22.785686370476185,"quality":"inauspicious"},{"name":"Udveg","start":"22:47","end":"00:28","startHours":22.785686370476185,"endHours":24.466645524856226,"quality":"inauspicious"},{"name":"Chala","start":"00:28","end":"02:09","startHours":24.466645524856226,"endHours":26.147604679236274,"quality":"neutral"},{"name":"Labha","start":"02:09","end":"03:50","startHours":26.147604679236274,"endHours":27.828563833616318,"quality":"auspicious"},{"name":"Amṛta","start":"03:50","end":"05:31","startHours":27.828563833616318,"endHours":29.509522987996363,"quality":"auspicious"},{"name":"Kāla","start":"05:31","end":"07:11","startHours":29.509522987996363,"endHours":31.190482142376407,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:11","end":"08:11","startHours":7.190482142376406,"endHours":8.190482142376407,"planetary_lord":"Mars"},{"name":"Hora 2","start":"08:11","end":"09:11","startHours":8.190482142376407,"endHours":9.190482142376407,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"09:11","end":"10:11","startHours":9.190482142376407,"endHours":10.190482142376407,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"10:11","end":"11:11","startHours":10.190482142376407,"endHours":11.190482142376407,"planetary_lord":"Moon"},{"name":"Hora 5","start":"11:11","end":"12:11","startHours":11.190482142376407,"endHours":12.190482142376407,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"12:11","end":"13:11","startHours":12.190482142376407,"endHours":13.190482142376407,"planetary_lord":"Venus"},{"name":"Hora 7","start":"13:11","end":"14:11","startHours":13.190482142376407,"endHours":14.190482142376407,"planetary_lord":"Sun"},{"name":"Hora 8","start":"14:11","end":"15:11","startHours":14.190482142376407,"endHours":15.190482142376407,"planetary_lord":"Mars"},{"name":"Hora 9","start":"15:11","end":"16:11","startHours":15.190482142376407,"endHours":16.190482142376407,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"16:11","end":"17:11","startHours":16.190482142376407,"endHours":17.190482142376407,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"17:11","end":"18:11","startHours":17.190482142376407,"endHours":18.190482142376407,"planetary_lord":"Moon"},{"name":"Hora 12","start":"18:11","end":"19:11","startHours":18.190482142376407,"endHours":19.190482142376407,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"19:11","end":"20:11","startHours":19.190482142376407,"endHours":20.190482142376407,"planetary_lord":"Venus"},{"name":"Hora 14","start":"20:11","end":"21:11","startHours":20.190482142376407,"endHours":21.190482142376407,"planetary_lord":"Sun"},{"name":"Hora 15","start":"21:11","end":"22:11","startHours":21.190482142376407,"endHours":22.190482142376407,"planetary_lord":"Mars"},{"name":"Hora 16","start":"22:11","end":"23:11","startHours":22.190482142376407,"endHours":23.190482142376407,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"23:11","end":"00:11","startHours":23.190482142376407,"endHours":24.190482142376407,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"00:11","end":"01:11","startHours":24.190482142376407,"endHours":25.190482142376407,"planetary_lord":"Moon"},{"name":"Hora 19","start":"01:11","end":"02:11","startHours":25.190482142376407,"endHours":26.190482142376407,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"02:11","end":"03:11","startHours":26.190482142376407,"endHours":27.190482142376407,"planetary_lord":"Venus"},{"name":"Hora 21","start":"03:11","end":"04:11","startHours":27.190482142376407,"endHours":28.190482142376407,"planetary_lord":"Sun"},{"name":"Hora 22","start":"04:11","end":"05:11","startHours":28.190482142376407,"endHours":29.190482142376407,"planetary_lord":"Mars"},{"name":"Hora 23","start":"05:11","end":"06:11","startHours":29.190482142376407,"endHours":30.190482142376407,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"06:11","end":"07:11","startHours":30.190482142376407,"endHours":31.190482142376407,"planetary_lord":"Saturn"}],"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":"North (Uttara)","chandraVasa":"South-West","rahuVasa":"North","anandadiYoga":{"name":"Utpāta","quality":"Inauspicious"},"drikRitu":"Hemanta (Pre-winter) (Drik)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-21.535447813369256,"eotMinutes":-8.635931491373626,"ayanamsa":23.8255}},"calendars":{"vikram_samvat":2055,"vikram_samvatsara":"Khara","saka_samvat":1920,"saka_samvatsara":"Bahudhānya","bengali_samvat":1405,"malayalam_era":1174,"nanakshahi_year":529,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Kṛṣṇa Pakṣa","solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Kṛṣṇa Pratipada · Vikram 2055 Khara · Śaka 1920 Bahudhānya"},"festivals":[{"id":"lohri","name":"Lohri","name_sanskrit":"लोहड़ी","tradition":"Regional","significance":"Punjab harvest festival; eve of Makara Saṅkrānti. (Approximated as 13/14 January annually; correct via Sun in Dhanu/Makara cusp.)","vrata":false,"detection":{"sun_rashi":"Dhanu"},"precedence":4},{"id":"dhanu-sankranti","name":"Dhanu Saṅkrānti","name_sanskrit":"धनु सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Sagittarius; Dhanu-māsa (Khara-māsa).","vrata":false,"detection":{"sun_rashi":"Dhanu"},"precedence":5}],"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":"vrindavan"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga January 13, 1998 CE · Vṛndāvana · Vidhyamitra","description":"January 13, 1998 CE for Vṛndāvana: Kṛṣṇa Pratipada, sūryodaya 07:11, sūryāsta 17:45.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/vrindavan/1998-01-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/vrindavan/1998-01-13","sa":"https://sa.vidhyamitra.com/city/vrindavan/1998-01-13","hi":"https://hi.vidhyamitra.com/city/vrindavan/1998-01-13","x-default":"https://vidhyamitra.com/city/vrindavan/1998-01-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-17T09:15:14.104Z","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":"2026-05-17T09:15:14.104Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-17T09:15:14.104Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}