{"id":"vidhyamitra:city-day:rishikesh:1986-02-28:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1986-02-28","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1986-02-28","date_display":"February 28, 1986 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":1986,"month":2,"day":28,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2446489.770833,"kali_year":5087,"ahargana":1858024.2708,"sun":{"sidereal_longitude":315.6782,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":178.4017,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":222.7234,"elapsed_within_tithi_degrees":6.7234},"nakshatra":{"number":14,"name":"Citrā","pada":2,"moon_longitude":178.4017,"elapsed_within_degrees":5.0683},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":134.0799},"karana":{"half_tithi_index":37,"name":"Bālava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"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":1986,"month":2,"day":28,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2446489.770833,"ahargana":1858024.2708,"kali_year":5087,"ayanamsa_lahiri":23.6597,"grahas":{"sun":{"sidereal_longitude":315.49525700000004,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":179.68955699999992,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false,"latitude":1.128},"mars":{"sidereal_longitude":231.39275699999996,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":333.77545699999996,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":308.947457,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":325.2052570000001,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":225.358157,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":12.9327,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":192.9327,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","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":1986,"month":2,"day":28,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2446489.770833,"kali_year":5087,"ahargana":1858024.2708,"sun":{"sidereal_longitude":315.6782,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":178.4017,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":222.7234,"elapsed_within_tithi_degrees":6.7234},"nakshatra":{"number":14,"name":"Citrā","pada":2,"moon_longitude":178.4017,"elapsed_within_degrees":5.0683},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":134.0799},"karana":{"half_tithi_index":37,"name":"Bālava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":1.128,"elongation":137.277},"lunar":{"type":"lunar","occurs":false,"moon_latitude":1.128,"opposition_distance":42.723}},"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":"06:45","sunsetLocal":"18:15","solarNoonLocal":"12:30","dayLengthHours":11.496503565898395,"dayLengthDisplay":"11 Hours 29 Mins 47 Secs","nightLengthDisplay":"12 Hours 30 Mins 13 Secs","moonriseLocal":"21:45","moonsetLocal":"09:08","rahuKala":{"name":"Rāhu Kāla","start":"11:04","end":"12:30","startHours":11.065481368029825,"endHours":12.502544313767125,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:23","end":"16:49","startHours":15.376670205241723,"endHours":16.813733150979022,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:11","end":"09:38","startHours":8.191355476555225,"endHours":9.628418422292524,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:26","end":"09:49","startHours":9.436810029527551,"endHours":9.8200268150575,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:14","end":"07:32","startHours":7.233313512730359,"endHours":7.539886941154316,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:07","end":"12:53","startHours":12.119327528237179,"endHours":12.88576109929707,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:13","end":"05:59","startHours":5.22142538869814,"endHours":5.987858959758033,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:48","end":"06:45","startHours":5.796250566993059,"endHours":6.754292530817926,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:25","end":"15:11","startHours":14.418628241416856,"endHours":15.18506181247675,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:03","end":"18:27","startHours":18.050796096716322,"endHours":18.45079609671632,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:15","end":"18:44","startHours":18.25079609671632,"endHours":18.729817078628756,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:00","end":"19:45","startHours":18.00079609671632,"endHours":19.75079609671632,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:07","end":"00:53","startHours":24.11932752823718,"endHours":24.88576109929707,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"06:45","end":"08:11","startHours":6.754292530817926,"endHours":8.191355476555225,"quality":"neutral"},{"name":"Labha","start":"08:11","end":"09:38","startHours":8.191355476555225,"endHours":9.628418422292524,"quality":"auspicious"},{"name":"Amṛta","start":"09:38","end":"11:04","startHours":9.628418422292524,"endHours":11.065481368029825,"quality":"auspicious"},{"name":"Kāla","start":"11:04","end":"12:30","startHours":11.065481368029825,"endHours":12.502544313767125,"quality":"inauspicious"},{"name":"Śubha","start":"12:30","end":"13:56","startHours":12.502544313767125,"endHours":13.939607259504424,"quality":"auspicious"},{"name":"Roga","start":"13:56","end":"15:23","startHours":13.939607259504424,"endHours":15.376670205241723,"quality":"inauspicious"},{"name":"Udveg","start":"15:23","end":"16:49","startHours":15.376670205241723,"endHours":16.813733150979022,"quality":"inauspicious"},{"name":"Chala","start":"16:49","end":"18:15","startHours":16.813733150979022,"endHours":18.25079609671632,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"18:15","end":"19:49","startHours":18.25079609671632,"endHours":19.813733150979022,"quality":"inauspicious"},{"name":"Udveg","start":"19:49","end":"21:23","startHours":19.813733150979022,"endHours":21.376670205241723,"quality":"inauspicious"},{"name":"Chala","start":"21:23","end":"22:56","startHours":21.376670205241723,"endHours":22.939607259504424,"quality":"neutral"},{"name":"Labha","start":"22:56","end":"00:30","startHours":22.939607259504424,"endHours":24.502544313767125,"quality":"auspicious"},{"name":"Amṛta","start":"00:30","end":"02:04","startHours":24.502544313767125,"endHours":26.065481368029825,"quality":"auspicious"},{"name":"Kāla","start":"02:04","end":"03:38","startHours":26.065481368029825,"endHours":27.628418422292526,"quality":"inauspicious"},{"name":"Śubha","start":"03:38","end":"05:11","startHours":27.628418422292526,"endHours":29.191355476555223,"quality":"auspicious"},{"name":"Roga","start":"05:11","end":"06:45","startHours":29.191355476555223,"endHours":30.754292530817928,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:45","end":"07:45","startHours":6.754292530817926,"endHours":7.754292530817926,"planetary_lord":"Venus"},{"name":"Hora 2","start":"07:45","end":"08:45","startHours":7.754292530817926,"endHours":8.754292530817926,"planetary_lord":"Sun"},{"name":"Hora 3","start":"08:45","end":"09:45","startHours":8.754292530817926,"endHours":9.754292530817926,"planetary_lord":"Mars"},{"name":"Hora 4","start":"09:45","end":"10:45","startHours":9.754292530817926,"endHours":10.754292530817926,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"10:45","end":"11:45","startHours":10.754292530817926,"endHours":11.754292530817926,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"11:45","end":"12:45","startHours":11.754292530817926,"endHours":12.754292530817926,"planetary_lord":"Moon"},{"name":"Hora 7","start":"12:45","end":"13:45","startHours":12.754292530817926,"endHours":13.754292530817926,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"13:45","end":"14:45","startHours":13.754292530817926,"endHours":14.754292530817926,"planetary_lord":"Venus"},{"name":"Hora 9","start":"14:45","end":"15:45","startHours":14.754292530817926,"endHours":15.754292530817926,"planetary_lord":"Sun"},{"name":"Hora 10","start":"15:45","end":"16:45","startHours":15.754292530817926,"endHours":16.754292530817928,"planetary_lord":"Mars"},{"name":"Hora 11","start":"16:45","end":"17:45","startHours":16.754292530817928,"endHours":17.754292530817928,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"17:45","end":"18:45","startHours":17.754292530817928,"endHours":18.754292530817928,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"18:45","end":"19:45","startHours":18.754292530817928,"endHours":19.754292530817928,"planetary_lord":"Moon"},{"name":"Hora 14","start":"19:45","end":"20:45","startHours":19.754292530817928,"endHours":20.754292530817928,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"20:45","end":"21:45","startHours":20.754292530817928,"endHours":21.754292530817928,"planetary_lord":"Venus"},{"name":"Hora 16","start":"21:45","end":"22:45","startHours":21.754292530817928,"endHours":22.754292530817928,"planetary_lord":"Sun"},{"name":"Hora 17","start":"22:45","end":"23:45","startHours":22.754292530817928,"endHours":23.754292530817928,"planetary_lord":"Mars"},{"name":"Hora 18","start":"23:45","end":"00:45","startHours":23.754292530817928,"endHours":24.754292530817928,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"00:45","end":"01:45","startHours":24.754292530817928,"endHours":25.754292530817928,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"01:45","end":"02:45","startHours":25.754292530817928,"endHours":26.754292530817928,"planetary_lord":"Moon"},{"name":"Hora 21","start":"02:45","end":"03:45","startHours":26.754292530817928,"endHours":27.754292530817928,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"03:45","end":"04:45","startHours":27.754292530817928,"endHours":28.754292530817928,"planetary_lord":"Venus"},{"name":"Hora 23","start":"04:45","end":"05:45","startHours":28.754292530817928,"endHours":29.754292530817928,"planetary_lord":"Sun"},{"name":"Hora 24","start":"05:45","end":"06:45","startHours":29.754292530817928,"endHours":30.754292530817928,"planetary_lord":"Mars"}],"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","Kanyā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Tulā","Dhanu","Makara"]},"dishaShool":"West (Paścim)","chandraVasa":"North-West","rahuVasa":"South-East","anandadiYoga":{"name":"Dhvānkṣa","quality":"Inauspicious"},"drikRitu":"Śiśira (Winter) (Drik)","vedicRitu":"Śiśira (Winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-8.136380058538405,"eotMinutes":-13.223058826027486,"ayanamsa":23.6597}},"calendars":{"vikram_samvat":2043,"vikram_samvatsara":"Pramāthi","saka_samvat":1908,"saka_samvatsara":"Akṣaya","bengali_samvat":1393,"malayalam_era":1162,"nanakshahi_year":517,"lunar_month":"Phālguna","lunar_month_paksha_full":"Phālguna Kṛṣṇa Pakṣa","solar_month":"Kumbha (Māsi)","ritu":"Śiśira (Winter)","display_summary":"Phālguna Kṛṣṇa Caturthī · Vikram 2043 Pramāthi · Śaka 1908 Akṣaya"},"festivals":[{"id":"kumbha-sankranti","name":"Kumbha Saṅkrānti","name_sanskrit":"कुम्भ सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Aquarius; Kumbha-māsa begins.","vrata":false,"detection":{"sun_rashi":"Kumbha"},"precedence":5},{"id":"sankashti-chaturthi","name":"Saṅkaṣṭī Caturthī","name_sanskrit":"सङ्कष्टी चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Gaṇeśa vrata.","vrata":true,"detection":{"tithi_number":19,"tithi_paksha":"Kṛṣṇa"},"precedence":6}],"todays_walk":{"walk":{"id":"shukra-walk","name":"Śukra Walk","name_sanskrit":"शुक्र यात्रा","type":"graha","description":"Beauty + creativity in dharma + BG 10.36.","step_count":5,"url":"/walk/shukra-walk"},"reason":"Śukravāra (Friday) — 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 February 28, 1986 CE · Ṛṣikeśa · Vidhyamitra","description":"February 28, 1986 CE for Ṛṣikeśa: Kṛṣṇa Caturthī, sūryodaya 06:45, sūryāsta 18:15.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1986-02-28","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1986-02-28","sa":"https://sa.vidhyamitra.com/city/rishikesh/1986-02-28","hi":"https://hi.vidhyamitra.com/city/rishikesh/1986-02-28","x-default":"https://vidhyamitra.com/city/rishikesh/1986-02-28"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-19T12:48:14.818Z","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":"2026-05-19T12:48:14.818Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-19T12:48:14.818Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}