{"id":"vidhyamitra:city-day:rishikesh:1985-12-28:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1985-12-28","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1985-12-28","date_display":"December 28, 1985 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":1985,"month":12,"day":28,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2446427.770833,"kali_year":5087,"ahargana":1857962.2708,"sun":{"sidereal_longitude":252.3543,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":81.1046,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":16,"name":"Pratipada","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Pratipada","elongation_degrees":188.7503,"elapsed_within_tithi_degrees":8.7503},"nakshatra":{"number":7,"name":"Punarvasu","pada":1,"moon_longitude":81.1046,"elapsed_within_degrees":1.1046},"yoga":{"number":26,"name":"Indra","sum_longitude":333.4589},"karana":{"half_tithi_index":31,"name":"Kaulava"},"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":1985,"month":12,"day":28,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2446427.770833,"ahargana":1857962.2708,"kali_year":5087,"ayanamsa_lahiri":23.6573,"grahas":{"sun":{"sidereal_longitude":252.59002600000008,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":4},"retrograde":false},"moon":{"sidereal_longitude":80.84792600000003,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":1},"retrograde":false,"latitude":4.0739},"mars":{"sidereal_longitude":194.637026,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":233.735226,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":294.60652600000003,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":247.38732600000003,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":220.70342600000004,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":16.2178,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":196.2178,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","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":1985,"month":12,"day":28,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2446427.770833,"kali_year":5087,"ahargana":1857962.2708,"sun":{"sidereal_longitude":252.3543,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":81.1046,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":16,"name":"Pratipada","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Pratipada","elongation_degrees":188.7503,"elapsed_within_tithi_degrees":8.7503},"nakshatra":{"number":7,"name":"Punarvasu","pada":1,"moon_longitude":81.1046,"elapsed_within_degrees":1.1046},"yoga":{"number":26,"name":"Indra","sum_longitude":333.4589},"karana":{"half_tithi_index":31,"name":"Kaulava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.074,"elongation":171.25},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.074,"opposition_distance":8.75}},"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":"07:12","sunsetLocal":"17:25","solarNoonLocal":"12:19","dayLengthHours":10.218461512615482,"dayLengthDisplay":"10 Hours 13 Mins 06 Secs","nightLengthDisplay":"13 Hours 46 Mins 54 Secs","moonriseLocal":"17:53","moonsetLocal":"07:51","rahuKala":{"name":"Rāhu Kāla","start":"09:46","end":"11:02","startHours":9.758996362917589,"endHours":11.036304051994524,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:35","end":"14:52","startHours":13.590919430148395,"endHours":14.86822711922533,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:12","end":"08:29","startHours":7.204380984763718,"endHours":8.481688673840653,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:35","end":"09:56","startHours":9.588688671040664,"endHours":9.929304054794514,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:38","end":"07:54","startHours":7.63015021445603,"endHours":7.90264252145911,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:58","end":"12:39","startHours":11.972996357317609,"endHours":12.654227124825308,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:51","end":"06:31","startHours":5.84191944974832,"endHours":6.52315021725602,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:21","end":"07:12","startHours":6.352842525379095,"endHours":7.204380984763718,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:01","end":"14:42","startHours":14.016688659840707,"endHours":14.697919427348406,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:13","end":"17:37","startHours":17.2228424973792,"endHours":17.6228424973792,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:25","end":"17:51","startHours":17.4228424973792,"endHours":17.84861172707151,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:10","end":"18:55","startHours":17.1728424973792,"endHours":18.9228424973792,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:58","end":"00:39","startHours":23.97299635731761,"endHours":24.654227124825308,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"07:12","end":"08:29","startHours":7.204380984763718,"endHours":8.481688673840653,"quality":"inauspicious"},{"name":"Śubha","start":"08:29","end":"09:46","startHours":8.481688673840653,"endHours":9.758996362917589,"quality":"auspicious"},{"name":"Roga","start":"09:46","end":"11:02","startHours":9.758996362917589,"endHours":11.036304051994524,"quality":"inauspicious"},{"name":"Udveg","start":"11:02","end":"12:19","startHours":11.036304051994524,"endHours":12.313611741071458,"quality":"inauspicious"},{"name":"Chala","start":"12:19","end":"13:35","startHours":12.313611741071458,"endHours":13.590919430148395,"quality":"neutral"},{"name":"Labha","start":"13:35","end":"14:52","startHours":13.590919430148395,"endHours":14.86822711922533,"quality":"auspicious"},{"name":"Amṛta","start":"14:52","end":"16:09","startHours":14.86822711922533,"endHours":16.145534808302266,"quality":"auspicious"},{"name":"Kāla","start":"16:09","end":"17:25","startHours":16.145534808302266,"endHours":17.4228424973792,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"17:25","end":"19:09","startHours":17.4228424973792,"endHours":19.145534808302266,"quality":"auspicious"},{"name":"Amṛta","start":"19:09","end":"20:52","startHours":19.145534808302266,"endHours":20.86822711922533,"quality":"auspicious"},{"name":"Kāla","start":"20:52","end":"22:35","startHours":20.86822711922533,"endHours":22.590919430148396,"quality":"inauspicious"},{"name":"Śubha","start":"22:35","end":"00:19","startHours":22.590919430148396,"endHours":24.31361174107146,"quality":"auspicious"},{"name":"Roga","start":"00:19","end":"02:02","startHours":24.31361174107146,"endHours":26.036304051994524,"quality":"inauspicious"},{"name":"Udveg","start":"02:02","end":"03:46","startHours":26.036304051994524,"endHours":27.75899636291759,"quality":"inauspicious"},{"name":"Chala","start":"03:46","end":"05:29","startHours":27.75899636291759,"endHours":29.48168867384065,"quality":"neutral"},{"name":"Labha","start":"05:29","end":"07:12","startHours":29.48168867384065,"endHours":31.204380984763716,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:12","end":"08:12","startHours":7.204380984763718,"endHours":8.204380984763718,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"08:12","end":"09:12","startHours":8.204380984763718,"endHours":9.204380984763718,"planetary_lord":"Moon"},{"name":"Hora 3","start":"09:12","end":"10:12","startHours":9.204380984763718,"endHours":10.204380984763718,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"10:12","end":"11:12","startHours":10.204380984763718,"endHours":11.204380984763718,"planetary_lord":"Venus"},{"name":"Hora 5","start":"11:12","end":"12:12","startHours":11.204380984763718,"endHours":12.204380984763718,"planetary_lord":"Sun"},{"name":"Hora 6","start":"12:12","end":"13:12","startHours":12.204380984763718,"endHours":13.204380984763718,"planetary_lord":"Mars"},{"name":"Hora 7","start":"13:12","end":"14:12","startHours":13.204380984763718,"endHours":14.204380984763718,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"14:12","end":"15:12","startHours":14.204380984763718,"endHours":15.204380984763718,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"15:12","end":"16:12","startHours":15.204380984763718,"endHours":16.204380984763716,"planetary_lord":"Moon"},{"name":"Hora 10","start":"16:12","end":"17:12","startHours":16.204380984763716,"endHours":17.204380984763716,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"17:12","end":"18:12","startHours":17.204380984763716,"endHours":18.204380984763716,"planetary_lord":"Venus"},{"name":"Hora 12","start":"18:12","end":"19:12","startHours":18.204380984763716,"endHours":19.204380984763716,"planetary_lord":"Sun"},{"name":"Hora 13","start":"19:12","end":"20:12","startHours":19.204380984763716,"endHours":20.204380984763716,"planetary_lord":"Mars"},{"name":"Hora 14","start":"20:12","end":"21:12","startHours":20.204380984763716,"endHours":21.204380984763716,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"21:12","end":"22:12","startHours":21.204380984763716,"endHours":22.204380984763716,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"22:12","end":"23:12","startHours":22.204380984763716,"endHours":23.204380984763716,"planetary_lord":"Moon"},{"name":"Hora 17","start":"23:12","end":"00:12","startHours":23.204380984763716,"endHours":24.204380984763716,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"00:12","end":"01:12","startHours":24.204380984763716,"endHours":25.204380984763716,"planetary_lord":"Venus"},{"name":"Hora 19","start":"01:12","end":"02:12","startHours":25.204380984763716,"endHours":26.204380984763716,"planetary_lord":"Sun"},{"name":"Hora 20","start":"02:12","end":"03:12","startHours":26.204380984763716,"endHours":27.204380984763716,"planetary_lord":"Mars"},{"name":"Hora 21","start":"03:12","end":"04:12","startHours":27.204380984763716,"endHours":28.204380984763716,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"04:12","end":"05:12","startHours":28.204380984763716,"endHours":29.204380984763716,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"05:12","end":"06:12","startHours":29.204380984763716,"endHours":30.204380984763716,"planetary_lord":"Moon"},{"name":"Hora 24","start":"06:12","end":"07:12","startHours":30.204380984763716,"endHours":31.204380984763716,"planetary_lord":"Mercury"}],"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","Mithuna","Siṃha","Vṛścika","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Karka","Kanyā","Tulā","Makara","Kumbha"]},"dishaShool":"East (Pūrva)","chandraVasa":"South","rahuVasa":"East","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":-23.289082844015756,"eotMinutes":-1.8871044642874448,"ayanamsa":23.6573}},"calendars":{"vikram_samvat":2042,"vikram_samvatsara":"Bahudhānya","saka_samvat":1907,"saka_samvatsara":"Krodhana","bengali_samvat":1392,"malayalam_era":1161,"nanakshahi_year":516,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Kṛṣṇa Pakṣa","solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Kṛṣṇa Pratipada · Vikram 2042 Bahudhānya · Śaka 1907 Krodhana"},"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":"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":"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":"-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 December 28, 1985 CE · Ṛṣikeśa · Vidhyamitra","description":"December 28, 1985 CE for Ṛṣikeśa: Kṛṣṇa Pratipada, sūryodaya 07:12, sūryāsta 17:25.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1985-12-28","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1985-12-28","sa":"https://sa.vidhyamitra.com/city/rishikesh/1985-12-28","hi":"https://hi.vidhyamitra.com/city/rishikesh/1985-12-28","x-default":"https://vidhyamitra.com/city/rishikesh/1985-12-28"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-18T15:04:07.591Z","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":"2026-05-18T15:04:07.591Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-18T15:04:07.591Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}