{"id":"vidhyamitra:city-day:rishikesh:1997-12-25:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1997-12-25","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1997-12-25","date_display":"December 25, 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":12,"day":25,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450807.770833,"kali_year":5099,"ahargana":1862342.2708,"sun":{"sidereal_longitude":249.1627,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":193.307,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":26,"name":"Ekādaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ekādaśī","elongation_degrees":304.1443,"elapsed_within_tithi_degrees":4.1443},"nakshatra":{"number":15,"name":"Svātī","pada":2,"moon_longitude":193.307,"elapsed_within_degrees":6.6403},"yoga":{"number":7,"name":"Sukarma","sum_longitude":82.4697},"karana":{"half_tithi_index":50,"name":"Bava"},"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":12,"day":25,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2450807.770833,"ahargana":1862342.2708,"kali_year":5099,"ayanamsa_lahiri":23.8248,"grahas":{"sun":{"sidereal_longitude":249.45427799999993,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":3},"retrograde":false},"moon":{"sidereal_longitude":193.67737799999998,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":3},"retrograde":false,"latitude":3.4031},"mars":{"sidereal_longitude":281.491678,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":233.65307800000005,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":true},"jupiter":{"sidereal_longitude":296.99727800000005,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":280.069978,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":true},"saturn":{"sidereal_longitude":349.740978,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":144.1443,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":324.1443,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva 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":12,"day":25,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450807.770833,"kali_year":5099,"ahargana":1862342.2708,"sun":{"sidereal_longitude":249.1627,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":193.307,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":26,"name":"Ekādaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ekādaśī","elongation_degrees":304.1443,"elapsed_within_tithi_degrees":4.1443},"nakshatra":{"number":15,"name":"Svātī","pada":2,"moon_longitude":193.307,"elapsed_within_degrees":6.6403},"yoga":{"number":7,"name":"Sukarma","sum_longitude":82.4697},"karana":{"half_tithi_index":50,"name":"Bava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.403,"elongation":55.856},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.403,"opposition_distance":124.144}},"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":"07:11","sunsetLocal":"17:24","solarNoonLocal":"12:17","dayLengthHours":10.208520339303533,"dayLengthDisplay":"10 Hours 12 Mins 31 Secs","nightLengthDisplay":"13 Hours 47 Mins 29 Secs","moonriseLocal":"03:05","moonsetLocal":"14:04","rahuKala":{"name":"Rāhu Kāla","start":"13:34","end":"14:51","startHours":13.566449324780766,"endHours":14.842514367193708,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:11","end":"08:28","startHours":7.186124112716058,"endHours":8.462189155129,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:44","end":"11:01","startHours":9.738254197541941,"endHours":11.014319239954883,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:34","end":"09:55","startHours":9.568112191886883,"endHours":9.908396203197,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:37","end":"07:53","startHours":7.611479126853705,"endHours":7.8837063359018,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:57","end":"12:38","startHours":11.950100271057707,"endHours":12.630668293677942,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:49","end":"06:30","startHours":5.824988067475587,"endHours":6.505556090095823,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:20","end":"07:11","startHours":6.335414084440764,"endHours":7.186124112716058,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:00","end":"14:40","startHours":13.991804338918413,"endHours":14.672372361538649,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:12","end":"17:36","startHours":17.194644452019592,"endHours":17.59464445201959,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:24","end":"17:49","startHours":17.39464445201959,"endHours":17.81999946615724,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:09","end":"18:54","startHours":17.14464445201959,"endHours":18.89464445201959,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:57","end":"00:38","startHours":23.950100271057707,"endHours":24.630668293677942,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"07:11","end":"08:28","startHours":7.186124112716058,"endHours":8.462189155129,"quality":"auspicious"},{"name":"Roga","start":"08:28","end":"09:44","startHours":8.462189155129,"endHours":9.738254197541941,"quality":"inauspicious"},{"name":"Udveg","start":"09:44","end":"11:01","startHours":9.738254197541941,"endHours":11.014319239954883,"quality":"inauspicious"},{"name":"Chala","start":"11:01","end":"12:17","startHours":11.014319239954883,"endHours":12.290384282367825,"quality":"neutral"},{"name":"Labha","start":"12:17","end":"13:34","startHours":12.290384282367825,"endHours":13.566449324780766,"quality":"auspicious"},{"name":"Amṛta","start":"13:34","end":"14:51","startHours":13.566449324780766,"endHours":14.842514367193708,"quality":"auspicious"},{"name":"Kāla","start":"14:51","end":"16:07","startHours":14.842514367193708,"endHours":16.11857940960665,"quality":"inauspicious"},{"name":"Śubha","start":"16:07","end":"17:24","startHours":16.11857940960665,"endHours":17.39464445201959,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"17:24","end":"19:07","startHours":17.39464445201959,"endHours":19.11857940960665,"quality":"auspicious"},{"name":"Kāla","start":"19:07","end":"20:51","startHours":19.11857940960665,"endHours":20.842514367193708,"quality":"inauspicious"},{"name":"Śubha","start":"20:51","end":"22:34","startHours":20.842514367193708,"endHours":22.566449324780766,"quality":"auspicious"},{"name":"Roga","start":"22:34","end":"00:17","startHours":22.566449324780766,"endHours":24.290384282367825,"quality":"inauspicious"},{"name":"Udveg","start":"00:17","end":"02:01","startHours":24.290384282367825,"endHours":26.014319239954883,"quality":"inauspicious"},{"name":"Chala","start":"02:01","end":"03:44","startHours":26.014319239954883,"endHours":27.73825419754194,"quality":"neutral"},{"name":"Labha","start":"03:44","end":"05:28","startHours":27.73825419754194,"endHours":29.462189155129,"quality":"auspicious"},{"name":"Amṛta","start":"05:28","end":"07:11","startHours":29.462189155129,"endHours":31.186124112716058,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:11","end":"08:11","startHours":7.186124112716058,"endHours":8.186124112716058,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"08:11","end":"09:11","startHours":8.186124112716058,"endHours":9.186124112716058,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"09:11","end":"10:11","startHours":9.186124112716058,"endHours":10.186124112716058,"planetary_lord":"Moon"},{"name":"Hora 4","start":"10:11","end":"11:11","startHours":10.186124112716058,"endHours":11.186124112716058,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"11:11","end":"12:11","startHours":11.186124112716058,"endHours":12.186124112716058,"planetary_lord":"Venus"},{"name":"Hora 6","start":"12:11","end":"13:11","startHours":12.186124112716058,"endHours":13.186124112716058,"planetary_lord":"Sun"},{"name":"Hora 7","start":"13:11","end":"14:11","startHours":13.186124112716058,"endHours":14.186124112716058,"planetary_lord":"Mars"},{"name":"Hora 8","start":"14:11","end":"15:11","startHours":14.186124112716058,"endHours":15.186124112716058,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"15:11","end":"16:11","startHours":15.186124112716058,"endHours":16.186124112716058,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"16:11","end":"17:11","startHours":16.186124112716058,"endHours":17.186124112716058,"planetary_lord":"Moon"},{"name":"Hora 11","start":"17:11","end":"18:11","startHours":17.186124112716058,"endHours":18.186124112716058,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"18:11","end":"19:11","startHours":18.186124112716058,"endHours":19.186124112716058,"planetary_lord":"Venus"},{"name":"Hora 13","start":"19:11","end":"20:11","startHours":19.186124112716058,"endHours":20.186124112716058,"planetary_lord":"Sun"},{"name":"Hora 14","start":"20:11","end":"21:11","startHours":20.186124112716058,"endHours":21.186124112716058,"planetary_lord":"Mars"},{"name":"Hora 15","start":"21:11","end":"22:11","startHours":21.186124112716058,"endHours":22.186124112716058,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"22:11","end":"23:11","startHours":22.186124112716058,"endHours":23.186124112716058,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"23:11","end":"00:11","startHours":23.186124112716058,"endHours":24.186124112716058,"planetary_lord":"Moon"},{"name":"Hora 18","start":"00:11","end":"01:11","startHours":24.186124112716058,"endHours":25.186124112716058,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"01:11","end":"02:11","startHours":25.186124112716058,"endHours":26.186124112716058,"planetary_lord":"Venus"},{"name":"Hora 20","start":"02:11","end":"03:11","startHours":26.186124112716058,"endHours":27.186124112716058,"planetary_lord":"Sun"},{"name":"Hora 21","start":"03:11","end":"04:11","startHours":27.186124112716058,"endHours":28.186124112716058,"planetary_lord":"Mars"},{"name":"Hora 22","start":"04:11","end":"05:11","startHours":28.186124112716058,"endHours":29.186124112716058,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"05:11","end":"06:11","startHours":29.186124112716058,"endHours":30.186124112716058,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"06:11","end":"07:11","startHours":30.186124112716058,"endHours":31.186124112716058,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Punarvasu","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Uttara Phalgunī","Hasta","Citrā","Svātī","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Karka","Siṃha","Tulā","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Vṛścika","Makara","Kumbha"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"North","rahuVasa":"North-West","anandadiYoga":{"name":"Dhūmra","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":-23.395841640492744,"eotMinutes":-0.4934569420694592,"ayanamsa":23.8248}},"calendars":{"vikram_samvat":2054,"vikram_samvatsara":"Vikṛti","saka_samvat":1919,"saka_samvatsara":"Īśvara","bengali_samvat":1404,"malayalam_era":1173,"nanakshahi_year":528,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Kṛṣṇa Pakṣa","solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Kṛṣṇa Ekādaśī · Vikram 2054 Vikṛti · Śaka 1919 Īśvara"},"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":"ekadashi","name":"Ekādaśī","name_sanskrit":"एकादशी","tradition":"Vaishnava","associated_deity":"Bhagavān Viṣṇu","significance":"Sacred to Bhagavān Viṣṇu; vrata for purification.","vrata":true,"detection":{"any_of":[{"tithi_number":11},{"tithi_number":26}]},"precedence":5},{"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":"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 December 25, 1997 CE · Ṛṣikeśa · Vidhyamitra","description":"December 25, 1997 CE for Ṛṣikeśa: Kṛṣṇa Ekādaśī, sūryodaya 07:11, sūryāsta 17:24.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1997-12-25","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1997-12-25","sa":"https://sa.vidhyamitra.com/city/rishikesh/1997-12-25","hi":"https://hi.vidhyamitra.com/city/rishikesh/1997-12-25","x-default":"https://vidhyamitra.com/city/rishikesh/1997-12-25"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-17T03:05:59.072Z","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":"2026-05-17T03:05:59.072Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-17T03:05:59.072Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}