{"id":"vidhyamitra:city-day:rishikesh:1997-02-07:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1997-02-07","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1997-02-07","date_display":"February 7, 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":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450486.770833,"kali_year":5098,"ahargana":1862021.2708,"sun":{"sidereal_longitude":294.5519,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":285.8537,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":30,"name":"Amāvasyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Amāvasyā","elongation_degrees":351.3018,"elapsed_within_tithi_degrees":3.3018},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2,"moon_longitude":285.8537,"elapsed_within_degrees":5.8537},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":220.4056},"karana":{"half_tithi_index":58,"name":"Catuṣpāda"},"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":1997,"month":2,"day":7,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2450486.770833,"ahargana":1862021.2708,"kali_year":5098,"ayanamsa_lahiri":23.8125,"grahas":{"sun":{"sidereal_longitude":294.4884420000001,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":286.035742,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false,"latitude":3.6984},"mars":{"sidereal_longitude":162.05094199999996,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":273.1161420000001,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":280.08454200000006,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"venus":{"sidereal_longitude":281.092042,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":340.367042,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":161.1524,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":341.1524,"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":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450486.770833,"kali_year":5098,"ahargana":1862021.2708,"sun":{"sidereal_longitude":294.5519,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":285.8537,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":30,"name":"Amāvasyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Amāvasyā","elongation_degrees":351.3018,"elapsed_within_tithi_degrees":3.3018},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2,"moon_longitude":285.8537,"elapsed_within_degrees":5.8537},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":220.4056},"karana":{"half_tithi_index":58,"name":"Catuṣpāda"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.698,"elongation":8.698},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.698,"opposition_distance":171.302}},"eclipse_window_40days":[]},"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":"07:04","sunsetLocal":"17:59","solarNoonLocal":"12:31","dayLengthHours":10.91513303434383,"dayLengthDisplay":"10 Hours 54 Mins 54 Secs","nightLengthDisplay":"13 Hours 05 Mins 06 Secs","moonriseLocal":"06:37","moonsetLocal":"17:18","rahuKala":{"name":"Rāhu Kāla","start":"11:09","end":"12:31","startHours":11.1573959125298,"endHours":12.521787541822778,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:15","end":"16:37","startHours":15.250570800408736,"endHours":16.614962429701716,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:26","end":"09:48","startHours":8.428612653943842,"endHours":9.793004283236822,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:37","end":"09:58","startHours":9.611085399331092,"endHours":9.974923167142553,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:31","end":"07:49","startHours":7.51901823441519,"endHours":7.810088448664359,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:09","end":"12:53","startHours":12.157949774011318,"endHours":12.88562530963424,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:37","end":"06:20","startHours":5.60886995340502,"endHours":6.336545489027943,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:09","end":"07:04","startHours":6.154626605122212,"endHours":7.064221024650864,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:20","end":"15:04","startHours":14.340976380880084,"endHours":15.068651916503006,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:47","end":"18:11","startHours":17.779354058994695,"endHours":18.179354058994694,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:59","end":"18:26","startHours":17.979354058994694,"endHours":18.43415126875902,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:44","end":"19:29","startHours":17.729354058994694,"endHours":19.479354058994694,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:09","end":"00:53","startHours":24.157949774011318,"endHours":24.88562530963424,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"07:04","end":"08:26","startHours":7.064221024650864,"endHours":8.428612653943842,"quality":"neutral"},{"name":"Labha","start":"08:26","end":"09:48","startHours":8.428612653943842,"endHours":9.793004283236822,"quality":"auspicious"},{"name":"Amṛta","start":"09:48","end":"11:09","startHours":9.793004283236822,"endHours":11.1573959125298,"quality":"auspicious"},{"name":"Kāla","start":"11:09","end":"12:31","startHours":11.1573959125298,"endHours":12.521787541822778,"quality":"inauspicious"},{"name":"Śubha","start":"12:31","end":"13:53","startHours":12.521787541822778,"endHours":13.886179171115758,"quality":"auspicious"},{"name":"Roga","start":"13:53","end":"15:15","startHours":13.886179171115758,"endHours":15.250570800408736,"quality":"inauspicious"},{"name":"Udveg","start":"15:15","end":"16:37","startHours":15.250570800408736,"endHours":16.614962429701716,"quality":"inauspicious"},{"name":"Chala","start":"16:37","end":"17:59","startHours":16.614962429701716,"endHours":17.979354058994694,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"17:59","end":"19:37","startHours":17.979354058994694,"endHours":19.614962429701716,"quality":"inauspicious"},{"name":"Udveg","start":"19:37","end":"21:15","startHours":19.614962429701716,"endHours":21.250570800408738,"quality":"inauspicious"},{"name":"Chala","start":"21:15","end":"22:53","startHours":21.250570800408738,"endHours":22.886179171115757,"quality":"neutral"},{"name":"Labha","start":"22:53","end":"00:31","startHours":22.886179171115757,"endHours":24.52178754182278,"quality":"auspicious"},{"name":"Amṛta","start":"00:31","end":"02:09","startHours":24.52178754182278,"endHours":26.1573959125298,"quality":"auspicious"},{"name":"Kāla","start":"02:09","end":"03:48","startHours":26.1573959125298,"endHours":27.793004283236822,"quality":"inauspicious"},{"name":"Śubha","start":"03:48","end":"05:26","startHours":27.793004283236822,"endHours":29.428612653943844,"quality":"auspicious"},{"name":"Roga","start":"05:26","end":"07:04","startHours":29.428612653943844,"endHours":31.064221024650863,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:04","end":"08:04","startHours":7.064221024650864,"endHours":8.064221024650864,"planetary_lord":"Venus"},{"name":"Hora 2","start":"08:04","end":"09:04","startHours":8.064221024650864,"endHours":9.064221024650864,"planetary_lord":"Sun"},{"name":"Hora 3","start":"09:04","end":"10:04","startHours":9.064221024650864,"endHours":10.064221024650864,"planetary_lord":"Mars"},{"name":"Hora 4","start":"10:04","end":"11:04","startHours":10.064221024650864,"endHours":11.064221024650864,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"11:04","end":"12:04","startHours":11.064221024650864,"endHours":12.064221024650864,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"12:04","end":"13:04","startHours":12.064221024650864,"endHours":13.064221024650864,"planetary_lord":"Moon"},{"name":"Hora 7","start":"13:04","end":"14:04","startHours":13.064221024650864,"endHours":14.064221024650864,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"14:04","end":"15:04","startHours":14.064221024650864,"endHours":15.064221024650864,"planetary_lord":"Venus"},{"name":"Hora 9","start":"15:04","end":"16:04","startHours":15.064221024650864,"endHours":16.064221024650863,"planetary_lord":"Sun"},{"name":"Hora 10","start":"16:04","end":"17:04","startHours":16.064221024650863,"endHours":17.064221024650863,"planetary_lord":"Mars"},{"name":"Hora 11","start":"17:04","end":"18:04","startHours":17.064221024650863,"endHours":18.064221024650863,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"18:04","end":"19:04","startHours":18.064221024650863,"endHours":19.064221024650863,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"19:04","end":"20:04","startHours":19.064221024650863,"endHours":20.064221024650863,"planetary_lord":"Moon"},{"name":"Hora 14","start":"20:04","end":"21:04","startHours":20.064221024650863,"endHours":21.064221024650863,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"21:04","end":"22:04","startHours":21.064221024650863,"endHours":22.064221024650863,"planetary_lord":"Venus"},{"name":"Hora 16","start":"22:04","end":"23:04","startHours":22.064221024650863,"endHours":23.064221024650863,"planetary_lord":"Sun"},{"name":"Hora 17","start":"23:04","end":"00:04","startHours":23.064221024650863,"endHours":24.064221024650863,"planetary_lord":"Mars"},{"name":"Hora 18","start":"00:04","end":"01:04","startHours":24.064221024650863,"endHours":25.064221024650863,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"01:04","end":"02:04","startHours":25.064221024650863,"endHours":26.064221024650863,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"02:04","end":"03:04","startHours":26.064221024650863,"endHours":27.064221024650863,"planetary_lord":"Moon"},{"name":"Hora 21","start":"03:04","end":"04:04","startHours":27.064221024650863,"endHours":28.064221024650863,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"04:04","end":"05:04","startHours":28.064221024650863,"endHours":29.064221024650863,"planetary_lord":"Venus"},{"name":"Hora 23","start":"05:04","end":"06:04","startHours":29.064221024650863,"endHours":30.064221024650863,"planetary_lord":"Sun"},{"name":"Hora 24","start":"06:04","end":"07:04","startHours":30.064221024650863,"endHours":31.064221024650863,"planetary_lord":"Mars"}],"taraBala":{"favorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Citrā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa"],"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":"West (Paścim)","chandraVasa":"South-East","rahuVasa":"South-East","anandadiYoga":{"name":"Padma","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":-15.341927948854886,"eotMinutes":-14.37765250936663,"ayanamsa":23.8125}},"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 Amāvasyā · 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":"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":[{"historical_date":"-3137-10-20","event":"Karṇa-Vadha (Mahābhārata Day 17)","chart_id":"karna","shared_marker":"same Kṛṣṇa Amāvasyā","url":"/day/-3137-10-20","relevance":0.5}]},"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 7, 1997 CE · Ṛṣikeśa · Vidhyamitra","description":"February 7, 1997 CE for Ṛṣikeśa: Kṛṣṇa Amāvasyā, sūryodaya 07:04, sūryāsta 17:59.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1997-02-07","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1997-02-07","sa":"https://sa.vidhyamitra.com/city/rishikesh/1997-02-07","hi":"https://hi.vidhyamitra.com/city/rishikesh/1997-02-07","x-default":"https://vidhyamitra.com/city/rishikesh/1997-02-07"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-17T02:06:22.319Z","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":"2026-05-17T02:06:22.319Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-17T02:06:22.319Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}