{"id":"vidhyamitra:city-day:rishikesh:1998-05-25:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1998-05-25","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1998-05-25","date_display":"May 25, 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":5,"day":25,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450958.770833,"kali_year":5100,"ahargana":1862493.2708,"sun":{"sidereal_longitude":39.7465,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":30.6606,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":30,"name":"Amāvasyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Amāvasyā","elongation_degrees":350.914,"elapsed_within_tithi_degrees":2.914},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2,"moon_longitude":30.6606,"elapsed_within_degrees":3.9939},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":70.4071},"karana":{"half_tithi_index":58,"name":"Catuṣpāda"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"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":5,"day":25,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2450958.770833,"ahargana":1862493.2708,"kali_year":5100,"ayanamsa_lahiri":23.8306,"grahas":{"sun":{"sidereal_longitude":39.821308999999985,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":29.09970900000002,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":1},"retrograde":false,"latitude":-4.3364},"mars":{"sidereal_longitude":36.858708999999976,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":21.98900900000001,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":329.8533090000001,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":0.4865090000000123,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":4.55230899999998,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":136.1436,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":316.1436,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","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":1998,"month":5,"day":25,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450958.770833,"kali_year":5100,"ahargana":1862493.2708,"sun":{"sidereal_longitude":39.7465,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":30.6606,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":30,"name":"Amāvasyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Amāvasyā","elongation_degrees":350.914,"elapsed_within_tithi_degrees":2.914},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2,"moon_longitude":30.6606,"elapsed_within_degrees":3.9939},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":70.4071},"karana":{"half_tithi_index":58,"name":"Catuṣpāda"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.336,"elongation":9.086},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.336,"opposition_distance":170.914}},"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":"05:18","sunsetLocal":"19:09","solarNoonLocal":"12:14","dayLengthHours":13.843622770778872,"dayLengthDisplay":"13 Hours 50 Mins 37 Secs","nightLengthDisplay":"10 Hours 09 Mins 23 Secs","moonriseLocal":"04:43","moonsetLocal":"18:18","rahuKala":{"name":"Rāhu Kāla","start":"07:02","end":"08:46","startHours":7.037170105043122,"endHours":8.767622951390482,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:30","end":"12:14","startHours":10.49807579773784,"endHours":12.228528644085198,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:58","end":"15:41","startHours":13.958981490432556,"endHours":15.689434336779918,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:32","end":"09:00","startHours":8.536895905210834,"endHours":8.998349997570129,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:53","end":"06:15","startHours":5.883534874144883,"endHours":6.252698148032319,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:46","end":"12:41","startHours":11.767074551725903,"endHours":12.689982736444493,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:28","end":"04:23","startHours":3.46090088925858,"endHours":4.383809073977172,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:09","end":"05:18","startHours":4.153082027797524,"endHours":5.306717258695763,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:32","end":"15:28","startHours":14.53579910588168,"endHours":15.458707290600271,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:57","end":"19:21","startHours":18.950340029474635,"endHours":19.350340029474633,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:09","end":"19:44","startHours":19.150340029474634,"endHours":19.727157644923754,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:54","end":"20:39","startHours":18.900340029474634,"endHours":20.650340029474634,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:46","end":"00:41","startHours":23.7670745517259,"endHours":24.689982736444495,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"05:18","end":"07:02","startHours":5.306717258695763,"endHours":7.037170105043122,"quality":"auspicious"},{"name":"Kāla","start":"07:02","end":"08:46","startHours":7.037170105043122,"endHours":8.767622951390482,"quality":"inauspicious"},{"name":"Śubha","start":"08:46","end":"10:30","startHours":8.767622951390482,"endHours":10.49807579773784,"quality":"auspicious"},{"name":"Roga","start":"10:30","end":"12:14","startHours":10.49807579773784,"endHours":12.228528644085198,"quality":"inauspicious"},{"name":"Udveg","start":"12:14","end":"13:58","startHours":12.228528644085198,"endHours":13.958981490432556,"quality":"inauspicious"},{"name":"Chala","start":"13:58","end":"15:41","startHours":13.958981490432556,"endHours":15.689434336779918,"quality":"neutral"},{"name":"Labha","start":"15:41","end":"17:25","startHours":15.689434336779918,"endHours":17.419887183127276,"quality":"auspicious"},{"name":"Amṛta","start":"17:25","end":"19:09","startHours":17.419887183127276,"endHours":19.150340029474634,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"19:09","end":"20:25","startHours":19.150340029474634,"endHours":20.419887183127276,"quality":"neutral"},{"name":"Labha","start":"20:25","end":"21:41","startHours":20.419887183127276,"endHours":21.689434336779918,"quality":"auspicious"},{"name":"Amṛta","start":"21:41","end":"22:58","startHours":21.689434336779918,"endHours":22.958981490432556,"quality":"auspicious"},{"name":"Kāla","start":"22:58","end":"00:14","startHours":22.958981490432556,"endHours":24.2285286440852,"quality":"inauspicious"},{"name":"Śubha","start":"00:14","end":"01:30","startHours":24.2285286440852,"endHours":25.49807579773784,"quality":"auspicious"},{"name":"Roga","start":"01:30","end":"02:46","startHours":25.49807579773784,"endHours":26.76762295139048,"quality":"inauspicious"},{"name":"Udveg","start":"02:46","end":"04:02","startHours":26.76762295139048,"endHours":28.03717010504312,"quality":"inauspicious"},{"name":"Chala","start":"04:02","end":"05:18","startHours":28.03717010504312,"endHours":29.306717258695762,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"05:18","end":"06:18","startHours":5.306717258695763,"endHours":6.306717258695763,"planetary_lord":"Moon"},{"name":"Hora 2","start":"06:18","end":"07:18","startHours":6.306717258695763,"endHours":7.306717258695763,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"07:18","end":"08:18","startHours":7.306717258695763,"endHours":8.306717258695762,"planetary_lord":"Venus"},{"name":"Hora 4","start":"08:18","end":"09:18","startHours":8.306717258695762,"endHours":9.306717258695762,"planetary_lord":"Sun"},{"name":"Hora 5","start":"09:18","end":"10:18","startHours":9.306717258695762,"endHours":10.306717258695762,"planetary_lord":"Mars"},{"name":"Hora 6","start":"10:18","end":"11:18","startHours":10.306717258695762,"endHours":11.306717258695762,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"11:18","end":"12:18","startHours":11.306717258695762,"endHours":12.306717258695762,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"12:18","end":"13:18","startHours":12.306717258695762,"endHours":13.306717258695762,"planetary_lord":"Moon"},{"name":"Hora 9","start":"13:18","end":"14:18","startHours":13.306717258695762,"endHours":14.306717258695762,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"14:18","end":"15:18","startHours":14.306717258695762,"endHours":15.306717258695762,"planetary_lord":"Venus"},{"name":"Hora 11","start":"15:18","end":"16:18","startHours":15.306717258695762,"endHours":16.306717258695762,"planetary_lord":"Sun"},{"name":"Hora 12","start":"16:18","end":"17:18","startHours":16.306717258695762,"endHours":17.306717258695762,"planetary_lord":"Mars"},{"name":"Hora 13","start":"17:18","end":"18:18","startHours":17.306717258695762,"endHours":18.306717258695762,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"18:18","end":"19:18","startHours":18.306717258695762,"endHours":19.306717258695762,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"19:18","end":"20:18","startHours":19.306717258695762,"endHours":20.306717258695762,"planetary_lord":"Moon"},{"name":"Hora 16","start":"20:18","end":"21:18","startHours":20.306717258695762,"endHours":21.306717258695762,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"21:18","end":"22:18","startHours":21.306717258695762,"endHours":22.306717258695762,"planetary_lord":"Venus"},{"name":"Hora 18","start":"22:18","end":"23:18","startHours":22.306717258695762,"endHours":23.306717258695762,"planetary_lord":"Sun"},{"name":"Hora 19","start":"23:18","end":"00:18","startHours":23.306717258695762,"endHours":24.306717258695762,"planetary_lord":"Mars"},{"name":"Hora 20","start":"00:18","end":"01:18","startHours":24.306717258695762,"endHours":25.306717258695762,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"01:18","end":"02:18","startHours":25.306717258695762,"endHours":26.306717258695762,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"02:18","end":"03:18","startHours":26.306717258695762,"endHours":27.306717258695762,"planetary_lord":"Moon"},{"name":"Hora 23","start":"03:18","end":"04:18","startHours":27.306717258695762,"endHours":28.306717258695762,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"04:18","end":"05:18","startHours":28.306717258695762,"endHours":29.306717258695762,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Hasta","Citrā","Svātī","Viśākhā","Anurādhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Kanyā","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Karka","Siṃha","Vṛścika","Dhanu","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"East","rahuVasa":"North-East","anandadiYoga":{"name":"Dhvaja","quality":"Auspicious"},"drikRitu":"Grīṣma (Summer) (Drik)","vedicRitu":"Vasanta (Spring)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":20.880112667105518,"eotMinutes":3.2178813548881493,"ayanamsa":23.8306}},"calendars":{"vikram_samvat":2055,"vikram_samvatsara":"Khara","saka_samvat":1920,"saka_samvatsara":"Bahudhānya","bengali_samvat":1405,"malayalam_era":1174,"nanakshahi_year":529,"lunar_month":"Jyeṣṭha","lunar_month_paksha_full":"Jyeṣṭha Kṛṣṇa Pakṣa","solar_month":"Vṛṣabha (Vaikāsi)","ritu":"Grīṣma (Summer)","display_summary":"Jyeṣṭha Kṛṣṇa Amāvasyā · Vikram 2055 Khara · Śaka 1920 Bahudhānya"},"festivals":[{"id":"vat-savitri-amavasya","name":"Vaṭa Sāvitrī Amāvasyā","name_sanskrit":"वट सावित्री अमावस्या","tradition":"Pan-Hindu","associated_deity":"Sāvitrī Devī","significance":"Sāvitrī's redemption of Satyavān from Yama; pati-vrata observance.","vrata":true,"detection":{"tithi_number":30,"tithi_paksha":"Kṛṣṇa","lunar_month":"Jyeṣṭha"},"precedence":2,"sources":["Mahābhārata, Vana Parva — Sāvitrī Upākhyāna"]},{"id":"vrishabha-sankranti","name":"Vṛṣabha Saṅkrānti","name_sanskrit":"वृषभ सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Taurus.","vrata":false,"detection":{"sun_rashi":"Vṛṣabha"},"precedence":5}],"todays_walk":{"walk":{"id":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7.","step_count":5,"url":"/walk/chandra-walk"},"reason":"Somavāra (Monday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3137-10-04","event":"Mahābhārata Day 1 (Bhagavad Gītā delivered)","chart_id":"krishna","shared_marker":"same Kṛttikā","url":"/day/-3137-10-04","relevance":0.5},{"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},{"historical_date":"-3137-12-25","event":"Bhīṣma's Mahaprasthan","chart_id":"bhishma","shared_marker":"same Kṛttikā","url":"/day/-3137-12-25","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 May 25, 1998 CE · Ṛṣikeśa · Vidhyamitra","description":"May 25, 1998 CE for Ṛṣikeśa: Kṛṣṇa Amāvasyā, sūryodaya 05:18, sūryāsta 19:09.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1998-05-25","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1998-05-25","sa":"https://sa.vidhyamitra.com/city/rishikesh/1998-05-25","hi":"https://hi.vidhyamitra.com/city/rishikesh/1998-05-25","x-default":"https://vidhyamitra.com/city/rishikesh/1998-05-25"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-17T07:26:37.618Z","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":"2026-05-17T07:26:37.618Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-17T07:26:37.618Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}