{"id":"vidhyamitra:city-day:rishikesh:1990-05-28:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1990-05-28","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1990-05-28","date_display":"May 28, 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":5,"day":28,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2448039.770833,"kali_year":5092,"ahargana":1859574.2708,"sun":{"sidereal_longitude":42.6742,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":89.722,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":47.0478,"elapsed_within_tithi_degrees":11.0478},"nakshatra":{"number":7,"name":"Punarvasu","pada":3,"moon_longitude":89.722,"elapsed_within_degrees":9.722},"yoga":{"number":10,"name":"Gaṇḍa","sum_longitude":132.3962},"karana":{"half_tithi_index":7,"name":"Viṣṭi"},"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":1990,"month":5,"day":28,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2448039.770833,"ahargana":1859574.2708,"kali_year":5092,"ayanamsa_lahiri":23.7189,"grahas":{"sun":{"sidereal_longitude":42.750336000000004,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1},"retrograde":false},"moon":{"sidereal_longitude":91.86713600000002,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":7,"name":"Punarvasu","pada":4},"retrograde":false,"latitude":1.6174},"mars":{"sidereal_longitude":333.973036,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":18.540636000000006,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":78.360836,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":3.6562359999999785,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":270.9782359999999,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":290.8062,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":110.8062,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","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":1990,"month":5,"day":28,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2448039.770833,"kali_year":5092,"ahargana":1859574.2708,"sun":{"sidereal_longitude":42.6742,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":89.722,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":47.0478,"elapsed_within_tithi_degrees":11.0478},"nakshatra":{"number":7,"name":"Punarvasu","pada":3,"moon_longitude":89.722,"elapsed_within_degrees":9.722},"yoga":{"number":10,"name":"Gaṇḍa","sum_longitude":132.3962},"karana":{"half_tithi_index":7,"name":"Viṣṭi"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":1.617,"elongation":47.048},"lunar":{"type":"lunar","occurs":false,"moon_latitude":1.617,"opposition_distance":132.952}},"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":"05:17","sunsetLocal":"19:11","solarNoonLocal":"12:14","dayLengthHours":13.890459057834072,"dayLengthDisplay":"13 Hours 53 Mins 26 Secs","nightLengthDisplay":"10 Hours 06 Mins 34 Secs","moonriseLocal":"08:36","moonsetLocal":"22:25","rahuKala":{"name":"Rāhu Kāla","start":"07:02","end":"08:46","startHours":7.025040961141443,"endHours":8.761348343370702,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:30","end":"12:14","startHours":10.49765572559996,"endHours":12.233963107829219,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:58","end":"15:42","startHours":13.970270490058478,"endHours":15.706577872287738,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:32","end":"09:00","startHours":8.5298406924068,"endHours":8.992855994334603,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:52","end":"06:14","startHours":5.867502706321937,"endHours":6.237914947864179,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:46","end":"12:42","startHours":11.770947805901416,"endHours":12.69697840975702,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:26","end":"04:22","startHours":3.436672371200974,"endHours":4.362702975056579,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:08","end":"05:17","startHours":4.131195324092678,"endHours":5.288733578912184,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:33","end":"15:29","startHours":14.549039617468232,"endHours":15.475070221323836,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:59","end":"19:23","startHours":18.979192636746255,"endHours":19.379192636746254,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:11","end":"19:45","startHours":19.179192636746254,"endHours":19.757961764156008,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:56","end":"20:41","startHours":18.929192636746254,"endHours":20.679192636746254,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:46","end":"00:42","startHours":23.770947805901415,"endHours":24.696978409757023,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"05:17","end":"07:02","startHours":5.288733578912184,"endHours":7.025040961141443,"quality":"auspicious"},{"name":"Kāla","start":"07:02","end":"08:46","startHours":7.025040961141443,"endHours":8.761348343370702,"quality":"inauspicious"},{"name":"Śubha","start":"08:46","end":"10:30","startHours":8.761348343370702,"endHours":10.49765572559996,"quality":"auspicious"},{"name":"Roga","start":"10:30","end":"12:14","startHours":10.49765572559996,"endHours":12.233963107829219,"quality":"inauspicious"},{"name":"Udveg","start":"12:14","end":"13:58","startHours":12.233963107829219,"endHours":13.970270490058478,"quality":"inauspicious"},{"name":"Chala","start":"13:58","end":"15:42","startHours":13.970270490058478,"endHours":15.706577872287738,"quality":"neutral"},{"name":"Labha","start":"15:42","end":"17:27","startHours":15.706577872287738,"endHours":17.442885254516995,"quality":"auspicious"},{"name":"Amṛta","start":"17:27","end":"19:11","startHours":17.442885254516995,"endHours":19.179192636746254,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"19:11","end":"20:27","startHours":19.179192636746254,"endHours":20.442885254516995,"quality":"neutral"},{"name":"Labha","start":"20:27","end":"21:42","startHours":20.442885254516995,"endHours":21.70657787228774,"quality":"auspicious"},{"name":"Amṛta","start":"21:42","end":"22:58","startHours":21.70657787228774,"endHours":22.97027049005848,"quality":"auspicious"},{"name":"Kāla","start":"22:58","end":"00:14","startHours":22.97027049005848,"endHours":24.23396310782922,"quality":"inauspicious"},{"name":"Śubha","start":"00:14","end":"01:30","startHours":24.23396310782922,"endHours":25.49765572559996,"quality":"auspicious"},{"name":"Roga","start":"01:30","end":"02:46","startHours":25.49765572559996,"endHours":26.7613483433707,"quality":"inauspicious"},{"name":"Udveg","start":"02:46","end":"04:02","startHours":26.7613483433707,"endHours":28.025040961141443,"quality":"inauspicious"},{"name":"Chala","start":"04:02","end":"05:17","startHours":28.025040961141443,"endHours":29.288733578912183,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"05:17","end":"06:17","startHours":5.288733578912184,"endHours":6.288733578912184,"planetary_lord":"Moon"},{"name":"Hora 2","start":"06:17","end":"07:17","startHours":6.288733578912184,"endHours":7.288733578912184,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"07:17","end":"08:17","startHours":7.288733578912184,"endHours":8.288733578912183,"planetary_lord":"Venus"},{"name":"Hora 4","start":"08:17","end":"09:17","startHours":8.288733578912183,"endHours":9.288733578912183,"planetary_lord":"Sun"},{"name":"Hora 5","start":"09:17","end":"10:17","startHours":9.288733578912183,"endHours":10.288733578912183,"planetary_lord":"Mars"},{"name":"Hora 6","start":"10:17","end":"11:17","startHours":10.288733578912183,"endHours":11.288733578912183,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"11:17","end":"12:17","startHours":11.288733578912183,"endHours":12.288733578912183,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"12:17","end":"13:17","startHours":12.288733578912183,"endHours":13.288733578912183,"planetary_lord":"Moon"},{"name":"Hora 9","start":"13:17","end":"14:17","startHours":13.288733578912183,"endHours":14.288733578912183,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"14:17","end":"15:17","startHours":14.288733578912183,"endHours":15.288733578912183,"planetary_lord":"Venus"},{"name":"Hora 11","start":"15:17","end":"16:17","startHours":15.288733578912183,"endHours":16.288733578912183,"planetary_lord":"Sun"},{"name":"Hora 12","start":"16:17","end":"17:17","startHours":16.288733578912183,"endHours":17.288733578912183,"planetary_lord":"Mars"},{"name":"Hora 13","start":"17:17","end":"18:17","startHours":17.288733578912183,"endHours":18.288733578912183,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"18:17","end":"19:17","startHours":18.288733578912183,"endHours":19.288733578912183,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"19:17","end":"20:17","startHours":19.288733578912183,"endHours":20.288733578912183,"planetary_lord":"Moon"},{"name":"Hora 16","start":"20:17","end":"21:17","startHours":20.288733578912183,"endHours":21.288733578912183,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"21:17","end":"22:17","startHours":21.288733578912183,"endHours":22.288733578912183,"planetary_lord":"Venus"},{"name":"Hora 18","start":"22:17","end":"23:17","startHours":22.288733578912183,"endHours":23.288733578912183,"planetary_lord":"Sun"},{"name":"Hora 19","start":"23:17","end":"00:17","startHours":23.288733578912183,"endHours":24.288733578912183,"planetary_lord":"Mars"},{"name":"Hora 20","start":"00:17","end":"01:17","startHours":24.288733578912183,"endHours":25.288733578912183,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"01:17","end":"02:17","startHours":25.288733578912183,"endHours":26.288733578912183,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"02:17","end":"03:17","startHours":26.288733578912183,"endHours":27.288733578912183,"planetary_lord":"Moon"},{"name":"Hora 23","start":"03:17","end":"04:17","startHours":27.288733578912183,"endHours":28.288733578912183,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"04:17","end":"05:17","startHours":28.288733578912183,"endHours":29.288733578912183,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Hasta","Citrā","Svātī","Viśākhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Vṛṣabha","Karka","Kanyā","Dhanu","Makara"],"unfavorable_rashis":["Mithuna","Siṃha","Tulā","Vṛścika","Kumbha","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-West","rahuVasa":"North-East","anandadiYoga":{"name":"Chatra","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":21.386620195315267,"eotMinutes":2.8918135302468597,"ayanamsa":23.7189}},"calendars":{"vikram_samvat":2047,"vikram_samvatsara":"Subhānu","saka_samvat":1912,"saka_samvatsara":"Pramoda","bengali_samvat":1397,"malayalam_era":1166,"nanakshahi_year":521,"lunar_month":"Jyeṣṭha","lunar_month_paksha_full":"Jyeṣṭha Śukla Pakṣa","solar_month":"Vṛṣabha (Vaikāsi)","ritu":"Grīṣma (Summer)","display_summary":"Jyeṣṭha Śukla Caturthī · Vikram 2047 Subhānu · Śaka 1912 Pramoda"},"festivals":[{"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},{"id":"vinayaka-chaturthi","name":"Vināyaka Caturthī (monthly)","name_sanskrit":"विनायक चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Śukla-pakṣa Caturthī; auspicious for new ventures.","vrata":true,"detection":{"tithi_number":4,"tithi_paksha":"Śukla"},"precedence":6}],"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":"-1626101-04-03","event":"Bhagavān Rāma's birth at Ayodhyā","chart_id":"rama","shared_marker":"same Punarvasu","url":"/day/-1626101-04-03","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 28, 1990 CE · Ṛṣikeśa · Vidhyamitra","description":"May 28, 1990 CE for Ṛṣikeśa: Śukla Caturthī, sūryodaya 05:17, sūryāsta 19:11.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1990-05-28","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1990-05-28","sa":"https://sa.vidhyamitra.com/city/rishikesh/1990-05-28","hi":"https://hi.vidhyamitra.com/city/rishikesh/1990-05-28","x-default":"https://vidhyamitra.com/city/rishikesh/1990-05-28"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-17T22:59:19.813Z","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":"2026-05-17T22:59:19.813Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-17T22:59:19.813Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}