{"id":"vidhyamitra:city-day:rishikesh:1997-05-01:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1997-05-01","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1997-05-01","date_display":"May 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":5,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450569.770833,"kali_year":5099,"ahargana":1862104.2708,"sun":{"sidereal_longitude":16.9656,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":300.8717,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":24,"name":"Navamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Navamī","elongation_degrees":283.906,"elapsed_within_tithi_degrees":7.906},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3,"moon_longitude":300.8717,"elapsed_within_degrees":7.5383},"yoga":{"number":24,"name":"Śukla","sum_longitude":317.8373},"karana":{"half_tithi_index":47,"name":"Gara"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"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":5,"day":1,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2450569.770833,"ahargana":1862104.2708,"kali_year":5099,"ayanamsa_lahiri":23.8157,"grahas":{"sun":{"sidereal_longitude":16.89877100000001,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":299.093171,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false,"latitude":2.6358},"mars":{"sidereal_longitude":142.987171,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":true},"mercury":{"sidereal_longitude":8.041471000000001,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":3},"retrograde":true},"jupiter":{"sidereal_longitude":295.73197099999993,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":24.318470999999988,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":350.240971,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":156.7547,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":336.7547,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2},"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":5,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450569.770833,"kali_year":5099,"ahargana":1862104.2708,"sun":{"sidereal_longitude":16.9656,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":300.8717,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":24,"name":"Navamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Navamī","elongation_degrees":283.906,"elapsed_within_tithi_degrees":7.906},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3,"moon_longitude":300.8717,"elapsed_within_degrees":7.5383},"yoga":{"number":24,"name":"Śukla","sum_longitude":317.8373},"karana":{"half_tithi_index":47,"name":"Gara"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.636,"elongation":76.094},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.636,"opposition_distance":103.906}},"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":"05:34","sunsetLocal":"18:54","solarNoonLocal":"12:14","dayLengthHours":13.32859797120027,"dayLengthDisplay":"13 Hours 19 Mins 43 Secs","nightLengthDisplay":"10 Hours 40 Mins 17 Secs","moonriseLocal":"01:33","moonsetLocal":"12:33","rahuKala":{"name":"Rāhu Kāla","start":"13:54","end":"15:34","startHours":13.899601290917253,"endHours":15.565676037317289,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"05:34","end":"07:14","startHours":5.569227558917085,"endHours":7.235302305317118,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:54","end":"10:34","startHours":8.901377051717152,"endHours":10.567451798117187,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:41","end":"09:07","startHours":8.679233752197147,"endHours":9.123520351237158,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:07","end":"06:29","startHours":6.1245858077170965,"endHours":6.480015086949104,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:47","end":"12:41","startHours":11.789239945477211,"endHours":12.677813143557229,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:48","end":"04:41","startHours":3.7920811627570488,"endHours":4.6806543608370665,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:28","end":"05:34","startHours":4.458511061317062,"endHours":5.569227558917085,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:27","end":"15:21","startHours":14.454959539717265,"endHours":15.343532737797283,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:42","end":"19:06","startHours":18.697825530117356,"endHours":19.097825530117355,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:54","end":"19:27","startHours":18.897825530117355,"endHours":19.453183778917367,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:39","end":"20:24","startHours":18.647825530117355,"endHours":20.397825530117355,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:47","end":"00:41","startHours":23.78923994547721,"endHours":24.677813143557227,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"05:34","end":"07:14","startHours":5.569227558917085,"endHours":7.235302305317118,"quality":"auspicious"},{"name":"Roga","start":"07:14","end":"08:54","startHours":7.235302305317118,"endHours":8.901377051717152,"quality":"inauspicious"},{"name":"Udveg","start":"08:54","end":"10:34","startHours":8.901377051717152,"endHours":10.567451798117187,"quality":"inauspicious"},{"name":"Chala","start":"10:34","end":"12:14","startHours":10.567451798117187,"endHours":12.23352654451722,"quality":"neutral"},{"name":"Labha","start":"12:14","end":"13:54","startHours":12.23352654451722,"endHours":13.899601290917253,"quality":"auspicious"},{"name":"Amṛta","start":"13:54","end":"15:34","startHours":13.899601290917253,"endHours":15.565676037317289,"quality":"auspicious"},{"name":"Kāla","start":"15:34","end":"17:14","startHours":15.565676037317289,"endHours":17.231750783717324,"quality":"inauspicious"},{"name":"Śubha","start":"17:14","end":"18:54","startHours":17.231750783717324,"endHours":18.897825530117355,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"18:54","end":"20:14","startHours":18.897825530117355,"endHours":20.23175078371732,"quality":"auspicious"},{"name":"Kāla","start":"20:14","end":"21:34","startHours":20.23175078371732,"endHours":21.56567603731729,"quality":"inauspicious"},{"name":"Śubha","start":"21:34","end":"22:54","startHours":21.56567603731729,"endHours":22.899601290917253,"quality":"auspicious"},{"name":"Roga","start":"22:54","end":"00:14","startHours":22.899601290917253,"endHours":24.23352654451722,"quality":"inauspicious"},{"name":"Udveg","start":"00:14","end":"01:34","startHours":24.23352654451722,"endHours":25.567451798117187,"quality":"inauspicious"},{"name":"Chala","start":"01:34","end":"02:54","startHours":25.567451798117187,"endHours":26.90137705171715,"quality":"neutral"},{"name":"Labha","start":"02:54","end":"04:14","startHours":26.90137705171715,"endHours":28.23530230531712,"quality":"auspicious"},{"name":"Amṛta","start":"04:14","end":"05:34","startHours":28.23530230531712,"endHours":29.569227558917085,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:34","end":"06:34","startHours":5.569227558917085,"endHours":6.569227558917085,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"06:34","end":"07:34","startHours":6.569227558917085,"endHours":7.569227558917085,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"07:34","end":"08:34","startHours":7.569227558917085,"endHours":8.569227558917085,"planetary_lord":"Moon"},{"name":"Hora 4","start":"08:34","end":"09:34","startHours":8.569227558917085,"endHours":9.569227558917085,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"09:34","end":"10:34","startHours":9.569227558917085,"endHours":10.569227558917085,"planetary_lord":"Venus"},{"name":"Hora 6","start":"10:34","end":"11:34","startHours":10.569227558917085,"endHours":11.569227558917085,"planetary_lord":"Sun"},{"name":"Hora 7","start":"11:34","end":"12:34","startHours":11.569227558917085,"endHours":12.569227558917085,"planetary_lord":"Mars"},{"name":"Hora 8","start":"12:34","end":"13:34","startHours":12.569227558917085,"endHours":13.569227558917085,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"13:34","end":"14:34","startHours":13.569227558917085,"endHours":14.569227558917085,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"14:34","end":"15:34","startHours":14.569227558917085,"endHours":15.569227558917085,"planetary_lord":"Moon"},{"name":"Hora 11","start":"15:34","end":"16:34","startHours":15.569227558917085,"endHours":16.569227558917085,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"16:34","end":"17:34","startHours":16.569227558917085,"endHours":17.569227558917085,"planetary_lord":"Venus"},{"name":"Hora 13","start":"17:34","end":"18:34","startHours":17.569227558917085,"endHours":18.569227558917085,"planetary_lord":"Sun"},{"name":"Hora 14","start":"18:34","end":"19:34","startHours":18.569227558917085,"endHours":19.569227558917085,"planetary_lord":"Mars"},{"name":"Hora 15","start":"19:34","end":"20:34","startHours":19.569227558917085,"endHours":20.569227558917085,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"20:34","end":"21:34","startHours":20.569227558917085,"endHours":21.569227558917085,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"21:34","end":"22:34","startHours":21.569227558917085,"endHours":22.569227558917085,"planetary_lord":"Moon"},{"name":"Hora 18","start":"22:34","end":"23:34","startHours":22.569227558917085,"endHours":23.569227558917085,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"23:34","end":"00:34","startHours":23.569227558917085,"endHours":24.569227558917085,"planetary_lord":"Venus"},{"name":"Hora 20","start":"00:34","end":"01:34","startHours":24.569227558917085,"endHours":25.569227558917085,"planetary_lord":"Sun"},{"name":"Hora 21","start":"01:34","end":"02:34","startHours":25.569227558917085,"endHours":26.569227558917085,"planetary_lord":"Mars"},{"name":"Hora 22","start":"02:34","end":"03:34","startHours":26.569227558917085,"endHours":27.569227558917085,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"03:34","end":"04:34","startHours":27.569227558917085,"endHours":28.569227558917085,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"04:34","end":"05:34","startHours":28.569227558917085,"endHours":29.569227558917085,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Maghā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"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":"South (Dakṣiṇa)","chandraVasa":"South-East","rahuVasa":"North-West","anandadiYoga":{"name":"Chatra","quality":"Auspicious"},"drikRitu":"Vasanta (Spring) (Drik)","vedicRitu":"Vasanta (Spring)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":15.036649590331333,"eotMinutes":2.918007328966811,"ayanamsa":23.8157}},"calendars":{"vikram_samvat":2054,"vikram_samvatsara":"Vikṛti","saka_samvat":1919,"saka_samvatsara":"Īśvara","bengali_samvat":1404,"malayalam_era":1173,"nanakshahi_year":528,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Kṛṣṇa Pakṣa","solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Vasanta (Spring)","display_summary":"Vaiśākha Kṛṣṇa Navamī · Vikram 2054 Vikṛti · Śaka 1919 Īśvara"},"festivals":[{"id":"mesha-sankranti","name":"Meṣa Saṅkrānti (Vaiśākhī / Vishu / Pohelā Boishākh / Bihu)","name_sanskrit":"मेष सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Aries; solar new year. Regional: Vaiśākhī (Punjab) · Vishu (Kerala) · Pohelā Boishākh (Bengal) · Bihu (Assam) · Tamil Puthāṇḍu.","vrata":false,"detection":{"sun_rashi":"Meṣa"},"precedence":1},{"id":"baisakhi","name":"Baisakhi (Vaiśākhī)","name_sanskrit":"वैशाखी","tradition":"Regional","associated_deity":"Sūrya + Khalsa Pantha (Sikh)","significance":"Punjab New Year + Sikh Khalsa founding day.","vrata":false,"detection":{"sun_rashi":"Meṣa"},"precedence":2}],"todays_walk":{"walk":{"id":"guru-walk","name":"Bṛhaspati Walk","name_sanskrit":"गुरु यात्रा","type":"graha","description":"Wisdom transmission + BG 4.34.","step_count":8,"url":"/walk/guru-walk"},"reason":"Guruvāra (Thursday) — 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 May 1, 1997 CE · Ṛṣikeśa · Vidhyamitra","description":"May 1, 1997 CE for Ṛṣikeśa: Kṛṣṇa Navamī, sūryodaya 05:34, sūryāsta 18:54.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1997-05-01","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1997-05-01","sa":"https://sa.vidhyamitra.com/city/rishikesh/1997-05-01","hi":"https://hi.vidhyamitra.com/city/rishikesh/1997-05-01","x-default":"https://vidhyamitra.com/city/rishikesh/1997-05-01"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-17T03:54:53.988Z","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":"2026-05-17T03:54:53.988Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-17T03:54:53.988Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}