{"id":"vidhyamitra:city-day:rishikesh:1998-02-20:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1998-02-20","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1998-02-20","date_display":"February 20, 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":2,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450864.770833,"kali_year":5099,"ahargana":1862399.2708,"sun":{"sidereal_longitude":307.4938,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":224.8859,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":24,"name":"Navamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Navamī","elongation_degrees":277.3921,"elapsed_within_tithi_degrees":1.3921},"nakshatra":{"number":17,"name":"Anurādhā","pada":4,"moon_longitude":224.8859,"elapsed_within_degrees":11.5526},"yoga":{"number":13,"name":"Vyāghāta","sum_longitude":172.3797},"karana":{"half_tithi_index":46,"name":"Taitila"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"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":2,"day":20,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2450864.770833,"ahargana":1862399.2708,"kali_year":5099,"ayanamsa_lahiri":23.827,"grahas":{"sun":{"sidereal_longitude":307.3674,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":221.76009999999997,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":false,"latitude":4.4733},"mars":{"sidereal_longitude":326.361,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":305.4978,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":309.8903,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":268.1848,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":353.3092,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":141.1241,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":321.1241,"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":2,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450864.770833,"kali_year":5099,"ahargana":1862399.2708,"sun":{"sidereal_longitude":307.4938,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":224.8859,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":24,"name":"Navamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Navamī","elongation_degrees":277.3921,"elapsed_within_tithi_degrees":1.3921},"nakshatra":{"number":17,"name":"Anurādhā","pada":4,"moon_longitude":224.8859,"elapsed_within_degrees":11.5526},"yoga":{"number":13,"name":"Vyāghāta","sum_longitude":172.3797},"karana":{"half_tithi_index":46,"name":"Taitila"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.473,"elongation":82.608},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.473,"opposition_distance":97.392}},"eclipse_window_40days":[{"offset_days":7,"type":"solar","occurs":true,"moon_latitude":0.255,"elongation":2.931}]},"city":{"slug":"rishikesh","name":"Ṛṣikeśa","lat":30.0869,"lon":78.2676,"tz_offset_hours":5.5,"state":"Uttarakhand","country":"IN","tier":"tirtha"},"tier2":{"city":{"slug":"rishikesh","name":"Ṛṣikeśa","lat":30.0869,"lon":78.2676,"tz_offset_hours":5.5,"state":"Uttarakhand","country":"IN","tier":"tirtha"},"sunriseLocal":"06:53","sunsetLocal":"18:09","solarNoonLocal":"12:31","dayLengthHours":11.26539964990582,"dayLengthDisplay":"11 Hours 15 Mins 55 Secs","nightLengthDisplay":"12 Hours 44 Mins 05 Secs","moonriseLocal":"01:38","moonsetLocal":"12:00","rahuKala":{"name":"Rāhu Kāla","start":"11:07","end":"12:31","startHours":11.112040794507141,"endHours":12.520215750745368,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:20","end":"16:45","startHours":15.336565663221826,"endHours":16.744740619460053,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:18","end":"09:42","startHours":8.295690882030687,"endHours":9.703865838268914,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:31","end":"09:53","startHours":9.516109177437151,"endHours":9.891622499100677,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:21","end":"07:39","startHours":7.356907577871868,"endHours":7.65731823520269,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:09","end":"12:54","startHours":12.144702429081843,"endHours":12.895729072408898,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:23","end":"06:08","startHours":5.38546263913835,"endHours":6.136489282465405,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:57","end":"06:53","startHours":5.948732621633641,"endHours":6.887515925792459,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:24","end":"15:09","startHours":14.397782359063006,"endHours":15.148809002390061,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:57","end":"18:21","startHours":17.95291557569828,"endHours":18.35291557569828,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:09","end":"18:37","startHours":18.15291557569828,"endHours":18.62230722777769,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:54","end":"19:39","startHours":17.90291557569828,"endHours":19.65291557569828,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:09","end":"00:54","startHours":24.144702429081846,"endHours":24.895729072408898,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"06:53","end":"08:18","startHours":6.887515925792459,"endHours":8.295690882030687,"quality":"neutral"},{"name":"Labha","start":"08:18","end":"09:42","startHours":8.295690882030687,"endHours":9.703865838268914,"quality":"auspicious"},{"name":"Amṛta","start":"09:42","end":"11:07","startHours":9.703865838268914,"endHours":11.112040794507141,"quality":"auspicious"},{"name":"Kāla","start":"11:07","end":"12:31","startHours":11.112040794507141,"endHours":12.520215750745368,"quality":"inauspicious"},{"name":"Śubha","start":"12:31","end":"13:56","startHours":12.520215750745368,"endHours":13.928390706983595,"quality":"auspicious"},{"name":"Roga","start":"13:56","end":"15:20","startHours":13.928390706983595,"endHours":15.336565663221826,"quality":"inauspicious"},{"name":"Udveg","start":"15:20","end":"16:45","startHours":15.336565663221826,"endHours":16.744740619460053,"quality":"inauspicious"},{"name":"Chala","start":"16:45","end":"18:09","startHours":16.744740619460053,"endHours":18.15291557569828,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"18:09","end":"19:45","startHours":18.15291557569828,"endHours":19.744740619460053,"quality":"inauspicious"},{"name":"Udveg","start":"19:45","end":"21:20","startHours":19.744740619460053,"endHours":21.336565663221826,"quality":"inauspicious"},{"name":"Chala","start":"21:20","end":"22:56","startHours":21.336565663221826,"endHours":22.9283907069836,"quality":"neutral"},{"name":"Labha","start":"22:56","end":"00:31","startHours":22.9283907069836,"endHours":24.520215750745372,"quality":"auspicious"},{"name":"Amṛta","start":"00:31","end":"02:07","startHours":24.520215750745372,"endHours":26.112040794507145,"quality":"auspicious"},{"name":"Kāla","start":"02:07","end":"03:42","startHours":26.112040794507145,"endHours":27.703865838268914,"quality":"inauspicious"},{"name":"Śubha","start":"03:42","end":"05:18","startHours":27.703865838268914,"endHours":29.295690882030687,"quality":"auspicious"},{"name":"Roga","start":"05:18","end":"06:53","startHours":29.295690882030687,"endHours":30.88751592579246,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:53","end":"07:53","startHours":6.887515925792459,"endHours":7.887515925792459,"planetary_lord":"Venus"},{"name":"Hora 2","start":"07:53","end":"08:53","startHours":7.887515925792459,"endHours":8.88751592579246,"planetary_lord":"Sun"},{"name":"Hora 3","start":"08:53","end":"09:53","startHours":8.88751592579246,"endHours":9.88751592579246,"planetary_lord":"Mars"},{"name":"Hora 4","start":"09:53","end":"10:53","startHours":9.88751592579246,"endHours":10.88751592579246,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"10:53","end":"11:53","startHours":10.88751592579246,"endHours":11.88751592579246,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"11:53","end":"12:53","startHours":11.88751592579246,"endHours":12.88751592579246,"planetary_lord":"Moon"},{"name":"Hora 7","start":"12:53","end":"13:53","startHours":12.88751592579246,"endHours":13.88751592579246,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"13:53","end":"14:53","startHours":13.88751592579246,"endHours":14.88751592579246,"planetary_lord":"Venus"},{"name":"Hora 9","start":"14:53","end":"15:53","startHours":14.88751592579246,"endHours":15.88751592579246,"planetary_lord":"Sun"},{"name":"Hora 10","start":"15:53","end":"16:53","startHours":15.88751592579246,"endHours":16.88751592579246,"planetary_lord":"Mars"},{"name":"Hora 11","start":"16:53","end":"17:53","startHours":16.88751592579246,"endHours":17.88751592579246,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"17:53","end":"18:53","startHours":17.88751592579246,"endHours":18.88751592579246,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"18:53","end":"19:53","startHours":18.88751592579246,"endHours":19.88751592579246,"planetary_lord":"Moon"},{"name":"Hora 14","start":"19:53","end":"20:53","startHours":19.88751592579246,"endHours":20.88751592579246,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"20:53","end":"21:53","startHours":20.88751592579246,"endHours":21.88751592579246,"planetary_lord":"Venus"},{"name":"Hora 16","start":"21:53","end":"22:53","startHours":21.88751592579246,"endHours":22.88751592579246,"planetary_lord":"Sun"},{"name":"Hora 17","start":"22:53","end":"23:53","startHours":22.88751592579246,"endHours":23.88751592579246,"planetary_lord":"Mars"},{"name":"Hora 18","start":"23:53","end":"00:53","startHours":23.88751592579246,"endHours":24.88751592579246,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"00:53","end":"01:53","startHours":24.88751592579246,"endHours":25.88751592579246,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"01:53","end":"02:53","startHours":25.88751592579246,"endHours":26.88751592579246,"planetary_lord":"Moon"},{"name":"Hora 21","start":"02:53","end":"03:53","startHours":26.88751592579246,"endHours":27.88751592579246,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"03:53","end":"04:53","startHours":27.88751592579246,"endHours":28.88751592579246,"planetary_lord":"Venus"},{"name":"Hora 23","start":"04:53","end":"05:53","startHours":28.88751592579246,"endHours":29.88751592579246,"planetary_lord":"Sun"},{"name":"Hora 24","start":"05:53","end":"06:53","startHours":29.88751592579246,"endHours":30.88751592579246,"planetary_lord":"Mars"}],"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","Siṃha","Kanyā","Vṛścika","Makara"],"unfavorable_rashis":["Mithuna","Karka","Tulā","Dhanu","Kumbha","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"North-East","rahuVasa":"South-East","anandadiYoga":{"name":"Vajra","quality":"Inauspicious"},"drikRitu":"Śiśira (Winter) (Drik)","vedicRitu":"Śiśira (Winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-11.048691455395366,"eotMinutes":-14.28334504472219,"ayanamsa":23.827}},"calendars":{"vikram_samvat":2055,"vikram_samvatsara":"Khara","saka_samvat":1920,"saka_samvatsara":"Bahudhānya","bengali_samvat":1405,"malayalam_era":1174,"nanakshahi_year":529,"lunar_month":"Phālguna","lunar_month_paksha_full":"Phālguna Kṛṣṇa Pakṣa","solar_month":"Kumbha (Māsi)","ritu":"Śiśira (Winter)","display_summary":"Phālguna Kṛṣṇa Navamī · Vikram 2055 Khara · Śaka 1920 Bahudhānya"},"festivals":[{"id":"kumbha-sankranti","name":"Kumbha Saṅkrānti","name_sanskrit":"कुम्भ सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Aquarius; Kumbha-māsa begins.","vrata":false,"detection":{"sun_rashi":"Kumbha"},"precedence":5}],"todays_walk":{"walk":{"id":"shukra-walk","name":"Śukra Walk","name_sanskrit":"शुक्र यात्रा","type":"graha","description":"Beauty + creativity in dharma + BG 10.36.","step_count":5,"url":"/walk/shukra-walk"},"reason":"Śukravāra (Friday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":false,"location_specific":"rishikesh"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga February 20, 1998 CE · Ṛṣikeśa · Vidhyamitra","description":"February 20, 1998 CE for Ṛṣikeśa: Kṛṣṇa Navamī, sūryodaya 06:53, sūryāsta 18:09.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1998-02-20","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1998-02-20","sa":"https://sa.vidhyamitra.com/city/rishikesh/1998-02-20","hi":"https://hi.vidhyamitra.com/city/rishikesh/1998-02-20","x-default":"https://vidhyamitra.com/city/rishikesh/1998-02-20"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-17T08:46:56.940Z","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":"2026-05-17T08:46:56.941Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-17T08:46:56.941Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}