{"id":"vidhyamitra:city-day:rishikesh:1990-03-31:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1990-03-31","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1990-03-31","date_display":"March 31, 1990 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":1990,"month":3,"day":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2447981.770833,"kali_year":5091,"ahargana":1859516.2708,"sun":{"sidereal_longitude":346.5427,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":42.0275,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":5,"name":"Pañcamī","paksha":"Śukla","full_name":"Śukla Pañcamī","elongation_degrees":55.4848,"elapsed_within_tithi_degrees":7.4848},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1,"moon_longitude":42.0275,"elapsed_within_degrees":2.0275},"yoga":{"number":3,"name":"Āyuṣmān","sum_longitude":28.5702},"karana":{"half_tithi_index":9,"name":"Bālava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"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":1990,"month":3,"day":31,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2447981.770833,"ahargana":1859516.2708,"kali_year":5091,"ayanamsa_lahiri":23.7167,"grahas":{"sun":{"sidereal_longitude":346.351252,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":45.047551999999996,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":2},"retrograde":false,"latitude":4.2757},"mars":{"sidereal_longitude":290.808852,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":358.468352,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":69.060652,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":300.0000520000001,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":270.409352,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":293.8794,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":113.8794,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","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":1990,"month":3,"day":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2447981.770833,"kali_year":5091,"ahargana":1859516.2708,"sun":{"sidereal_longitude":346.5427,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":42.0275,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":5,"name":"Pañcamī","paksha":"Śukla","full_name":"Śukla Pañcamī","elongation_degrees":55.4848,"elapsed_within_tithi_degrees":7.4848},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1,"moon_longitude":42.0275,"elapsed_within_degrees":2.0275},"yoga":{"number":3,"name":"Āyuṣmān","sum_longitude":28.5702},"karana":{"half_tithi_index":9,"name":"Bālava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.276,"elongation":55.485},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.276,"opposition_distance":124.515}},"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":"06:08","sunsetLocal":"18:35","solarNoonLocal":"12:22","dayLengthHours":12.437400019356087,"dayLengthDisplay":"12 Hours 26 Mins 15 Secs","nightLengthDisplay":"11 Hours 33 Mins 45 Secs","moonriseLocal":"09:20","moonsetLocal":"23:13","rahuKala":{"name":"Rāhu Kāla","start":"09:15","end":"10:48","startHours":9.25050501876242,"endHours":10.805180021181929,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:55","end":"15:28","startHours":13.914530026020952,"endHours":15.469205028440463,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"06:08","end":"07:42","startHours":6.141155013923398,"endHours":7.695830016342908,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:03","end":"09:27","startHours":9.043215018439819,"endHours":9.45779501908502,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:40","end":"06:59","startHours":6.659380014729901,"endHours":6.991044015246064,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:57","end":"12:46","startHours":11.94527502295624,"endHours":12.774435024246644,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:29","end":"05:19","startHours":4.482835011342586,"endHours":5.311995012632992,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:06","end":"06:08","startHours":5.104705012310391,"endHours":6.141155013923398,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:26","end":"15:16","startHours":14.432755026827454,"endHours":15.26191502811786,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:23","end":"18:47","startHours":18.378555033279486,"endHours":18.778555033279485,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:35","end":"19:06","startHours":18.578555033279486,"endHours":19.096780034085988,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:20","end":"20:05","startHours":18.328555033279486,"endHours":20.078555033279486,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:57","end":"00:46","startHours":23.94527502295624,"endHours":24.774435024246642,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"06:08","end":"07:42","startHours":6.141155013923398,"endHours":7.695830016342908,"quality":"inauspicious"},{"name":"Śubha","start":"07:42","end":"09:15","startHours":7.695830016342908,"endHours":9.25050501876242,"quality":"auspicious"},{"name":"Roga","start":"09:15","end":"10:48","startHours":9.25050501876242,"endHours":10.805180021181929,"quality":"inauspicious"},{"name":"Udveg","start":"10:48","end":"12:22","startHours":10.805180021181929,"endHours":12.35985502360144,"quality":"inauspicious"},{"name":"Chala","start":"12:22","end":"13:55","startHours":12.35985502360144,"endHours":13.914530026020952,"quality":"neutral"},{"name":"Labha","start":"13:55","end":"15:28","startHours":13.914530026020952,"endHours":15.469205028440463,"quality":"auspicious"},{"name":"Amṛta","start":"15:28","end":"17:01","startHours":15.469205028440463,"endHours":17.023880030859974,"quality":"auspicious"},{"name":"Kāla","start":"17:01","end":"18:35","startHours":17.023880030859974,"endHours":18.578555033279486,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"18:35","end":"20:01","startHours":18.578555033279486,"endHours":20.023880030859974,"quality":"auspicious"},{"name":"Amṛta","start":"20:01","end":"21:28","startHours":20.023880030859974,"endHours":21.469205028440463,"quality":"auspicious"},{"name":"Kāla","start":"21:28","end":"22:55","startHours":21.469205028440463,"endHours":22.914530026020955,"quality":"inauspicious"},{"name":"Śubha","start":"22:55","end":"00:22","startHours":22.914530026020955,"endHours":24.35985502360144,"quality":"auspicious"},{"name":"Roga","start":"00:22","end":"01:48","startHours":24.35985502360144,"endHours":25.805180021181933,"quality":"inauspicious"},{"name":"Udveg","start":"01:48","end":"03:15","startHours":25.805180021181933,"endHours":27.25050501876242,"quality":"inauspicious"},{"name":"Chala","start":"03:15","end":"04:42","startHours":27.25050501876242,"endHours":28.69583001634291,"quality":"neutral"},{"name":"Labha","start":"04:42","end":"06:08","startHours":28.69583001634291,"endHours":30.1411550139234,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:08","end":"07:08","startHours":6.141155013923398,"endHours":7.141155013923398,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"07:08","end":"08:08","startHours":7.141155013923398,"endHours":8.141155013923399,"planetary_lord":"Moon"},{"name":"Hora 3","start":"08:08","end":"09:08","startHours":8.141155013923399,"endHours":9.141155013923399,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"09:08","end":"10:08","startHours":9.141155013923399,"endHours":10.141155013923399,"planetary_lord":"Venus"},{"name":"Hora 5","start":"10:08","end":"11:08","startHours":10.141155013923399,"endHours":11.141155013923399,"planetary_lord":"Sun"},{"name":"Hora 6","start":"11:08","end":"12:08","startHours":11.141155013923399,"endHours":12.141155013923399,"planetary_lord":"Mars"},{"name":"Hora 7","start":"12:08","end":"13:08","startHours":12.141155013923399,"endHours":13.141155013923399,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"13:08","end":"14:08","startHours":13.141155013923399,"endHours":14.141155013923399,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"14:08","end":"15:08","startHours":14.141155013923399,"endHours":15.141155013923399,"planetary_lord":"Moon"},{"name":"Hora 10","start":"15:08","end":"16:08","startHours":15.141155013923399,"endHours":16.1411550139234,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"16:08","end":"17:08","startHours":16.1411550139234,"endHours":17.1411550139234,"planetary_lord":"Venus"},{"name":"Hora 12","start":"17:08","end":"18:08","startHours":17.1411550139234,"endHours":18.1411550139234,"planetary_lord":"Sun"},{"name":"Hora 13","start":"18:08","end":"19:08","startHours":18.1411550139234,"endHours":19.1411550139234,"planetary_lord":"Mars"},{"name":"Hora 14","start":"19:08","end":"20:08","startHours":19.1411550139234,"endHours":20.1411550139234,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"20:08","end":"21:08","startHours":20.1411550139234,"endHours":21.1411550139234,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"21:08","end":"22:08","startHours":21.1411550139234,"endHours":22.1411550139234,"planetary_lord":"Moon"},{"name":"Hora 17","start":"22:08","end":"23:08","startHours":22.1411550139234,"endHours":23.1411550139234,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"23:08","end":"00:08","startHours":23.1411550139234,"endHours":24.1411550139234,"planetary_lord":"Venus"},{"name":"Hora 19","start":"00:08","end":"01:08","startHours":24.1411550139234,"endHours":25.1411550139234,"planetary_lord":"Sun"},{"name":"Hora 20","start":"01:08","end":"02:08","startHours":25.1411550139234,"endHours":26.1411550139234,"planetary_lord":"Mars"},{"name":"Hora 21","start":"02:08","end":"03:08","startHours":26.1411550139234,"endHours":27.1411550139234,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"03:08","end":"04:08","startHours":27.1411550139234,"endHours":28.1411550139234,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"04:08","end":"05:08","startHours":28.1411550139234,"endHours":29.1411550139234,"planetary_lord":"Moon"},{"name":"Hora 24","start":"05:08","end":"06:08","startHours":29.1411550139234,"endHours":30.1411550139234,"planetary_lord":"Mercury"}],"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":["Vṛṣabha","Karka","Tulā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Siṃha","Kanyā","Dhanu","Makara"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-East","rahuVasa":"East","anandadiYoga":{"name":"Dhātṛ","quality":"Auspicious"},"drikRitu":"Vasanta (Spring) (Drik)","vedicRitu":"Śiśira (Winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":3.9869928478761425,"eotMinutes":-4.661701416086492,"ayanamsa":23.7167}},"calendars":{"vikram_samvat":2047,"vikram_samvatsara":"Subhānu","saka_samvat":1912,"saka_samvatsara":"Pramoda","bengali_samvat":1397,"malayalam_era":1166,"nanakshahi_year":521,"lunar_month":"Caitra","lunar_month_paksha_full":"Caitra Śukla Pakṣa","solar_month":"Mīna (Paṅkuṇi)","ritu":"Vasanta (Spring)","display_summary":"Caitra Śukla Pañcamī · Vikram 2047 Subhānu · Śaka 1912 Pramoda"},"festivals":[{"id":"ramanuja-jayanti","name":"Rāmānujācārya Jayantī","name_sanskrit":"रामानुजाचार्य जयन्ती","tradition":"Vaishnava","associated_deity":"Rāmānujācārya (Viśiṣṭādvaita)","significance":"Birth of Rāmānujācārya; Viśiṣṭādvaita-pratiṣṭhāpaka. Caitra Śukla 5.","vrata":false,"detection":{"tithi_number":5,"tithi_paksha":"Śukla","lunar_month":"Caitra"},"precedence":3},{"id":"mina-sankranti","name":"Mīna Saṅkrānti","name_sanskrit":"मीन सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Pisces; Mīna-māsa begins.","vrata":false,"detection":{"sun_rashi":"Mīna"},"precedence":5}],"todays_walk":{"walk":{"id":"shani-walk","name":"Śani Walk","name_sanskrit":"शनि यात्रा","type":"graha","description":"Tapas + endurance + BG 17.14-19.","step_count":7,"url":"/walk/shani-walk"},"reason":"Śanivāra (Saturday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3226-07-09","event":"Bhagavān Krishna's birth at Mathurā","chart_id":"krishna","shared_marker":"same Rohiṇī","url":"/day/-3226-07-09","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 March 31, 1990 CE · Ṛṣikeśa · Vidhyamitra","description":"March 31, 1990 CE for Ṛṣikeśa: Śukla Pañcamī, sūryodaya 06:08, sūryāsta 18:35.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1990-03-31","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1990-03-31","sa":"https://sa.vidhyamitra.com/city/rishikesh/1990-03-31","hi":"https://hi.vidhyamitra.com/city/rishikesh/1990-03-31","x-default":"https://vidhyamitra.com/city/rishikesh/1990-03-31"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-18T00:46:44.501Z","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":"2026-05-18T00:46:44.501Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-18T00:46:44.501Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}