{"id":"vidhyamitra:city-day:rishikesh:1983-01-12:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1983-01-12","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1983-01-12","date_display":"January 12, 1983 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":1983,"month":1,"day":12,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2445346.770833,"kali_year":5084,"ahargana":1856881.2708,"sun":{"sidereal_longitude":267.5435,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":243.3241,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":335.7806,"elapsed_within_tithi_degrees":11.7806},"nakshatra":{"number":19,"name":"Mūla","pada":1,"moon_longitude":243.3241,"elapsed_within_degrees":3.3241},"yoga":{"number":12,"name":"Dhruva","sum_longitude":150.8675},"karana":{"half_tithi_index":55,"name":"Vaṇija"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"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":1983,"month":1,"day":12,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2445346.770833,"ahargana":1856881.2708,"kali_year":5084,"ayanamsa_lahiri":23.6159,"grahas":{"sun":{"sidereal_longitude":267.64212799999996,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":244.16892800000005,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false,"latitude":0.7938},"mars":{"sidereal_longitude":302.304528,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":276.8868279999999,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":true},"jupiter":{"sidereal_longitude":220.39392799999996,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":284.52072799999996,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":189.638828,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":73.4943,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":253.4943,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"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":1983,"month":1,"day":12,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2445346.770833,"kali_year":5084,"ahargana":1856881.2708,"sun":{"sidereal_longitude":267.5435,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":243.3241,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":335.7806,"elapsed_within_tithi_degrees":11.7806},"nakshatra":{"number":19,"name":"Mūla","pada":1,"moon_longitude":243.3241,"elapsed_within_degrees":3.3241},"yoga":{"number":12,"name":"Dhruva","sum_longitude":150.8675},"karana":{"half_tithi_index":55,"name":"Vaṇija"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":0.794,"elongation":24.219},"lunar":{"type":"lunar","occurs":false,"moon_latitude":0.794,"opposition_distance":155.781}},"eclipse_window_40days":[{"offset_days":2,"type":"solar","occurs":true,"moon_latitude":-1.179,"elongation":1.007}]},"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":"07:14","sunsetLocal":"17:36","solarNoonLocal":"12:25","dayLengthHours":10.359162822131381,"dayLengthDisplay":"10 Hours 21 Mins 33 Secs","nightLengthDisplay":"13 Hours 38 Mins 27 Secs","moonriseLocal":"05:46","moonsetLocal":"15:56","rahuKala":{"name":"Rāhu Kāla","start":"12:25","end":"13:43","startHours":12.419918043939632,"endHours":13.714813396706056,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"08:32","end":"09:50","startHours":8.535231985640365,"endHours":9.830127338406786,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"11:08","end":"12:25","startHours":11.12502269117321,"endHours":12.419918043939632,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:39","end":"10:00","startHours":9.657474624704598,"endHours":10.002780052108976,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:40","end":"07:57","startHours":7.671968417129416,"endHours":7.94821275905292,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:04","end":"12:46","startHours":12.074612616535251,"endHours":12.765223471344012,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:52","end":"06:33","startHours":5.859114923256424,"endHours":6.549725778065183,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:23","end":"07:14","startHours":6.377073064362993,"endHours":7.240336632873942,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:09","end":"14:50","startHours":14.146445180961528,"endHours":14.837056035770287,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:24","end":"17:48","startHours":17.399499455005323,"endHours":17.79949945500532,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:36","end":"18:02","startHours":17.599499455005322,"endHours":18.031131239260795,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:21","end":"19:06","startHours":17.349499455005322,"endHours":19.099499455005322,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:04","end":"00:46","startHours":24.07461261653525,"endHours":24.76522347134401,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"07:14","end":"08:32","startHours":7.240336632873942,"endHours":8.535231985640365,"quality":"auspicious"},{"name":"Amṛta","start":"08:32","end":"09:50","startHours":8.535231985640365,"endHours":9.830127338406786,"quality":"auspicious"},{"name":"Kāla","start":"09:50","end":"11:08","startHours":9.830127338406786,"endHours":11.12502269117321,"quality":"inauspicious"},{"name":"Śubha","start":"11:08","end":"12:25","startHours":11.12502269117321,"endHours":12.419918043939632,"quality":"auspicious"},{"name":"Roga","start":"12:25","end":"13:43","startHours":12.419918043939632,"endHours":13.714813396706056,"quality":"inauspicious"},{"name":"Udveg","start":"13:43","end":"15:01","startHours":13.714813396706056,"endHours":15.009708749472477,"quality":"inauspicious"},{"name":"Chala","start":"15:01","end":"16:18","startHours":15.009708749472477,"endHours":16.3046041022389,"quality":"neutral"},{"name":"Labha","start":"16:18","end":"17:36","startHours":16.3046041022389,"endHours":17.599499455005322,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"17:36","end":"19:18","startHours":17.599499455005322,"endHours":19.304604102238898,"quality":"inauspicious"},{"name":"Chala","start":"19:18","end":"21:01","startHours":19.304604102238898,"endHours":21.009708749472477,"quality":"neutral"},{"name":"Labha","start":"21:01","end":"22:43","startHours":21.009708749472477,"endHours":22.714813396706056,"quality":"auspicious"},{"name":"Amṛta","start":"22:43","end":"00:25","startHours":22.714813396706056,"endHours":24.41991804393963,"quality":"auspicious"},{"name":"Kāla","start":"00:25","end":"02:08","startHours":24.41991804393963,"endHours":26.125022691173207,"quality":"inauspicious"},{"name":"Śubha","start":"02:08","end":"03:50","startHours":26.125022691173207,"endHours":27.830127338406786,"quality":"auspicious"},{"name":"Roga","start":"03:50","end":"05:32","startHours":27.830127338406786,"endHours":29.535231985640365,"quality":"inauspicious"},{"name":"Udveg","start":"05:32","end":"07:14","startHours":29.535231985640365,"endHours":31.24033663287394,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:14","end":"08:14","startHours":7.240336632873942,"endHours":8.240336632873941,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"08:14","end":"09:14","startHours":8.240336632873941,"endHours":9.240336632873941,"planetary_lord":"Venus"},{"name":"Hora 3","start":"09:14","end":"10:14","startHours":9.240336632873941,"endHours":10.240336632873941,"planetary_lord":"Sun"},{"name":"Hora 4","start":"10:14","end":"11:14","startHours":10.240336632873941,"endHours":11.240336632873941,"planetary_lord":"Mars"},{"name":"Hora 5","start":"11:14","end":"12:14","startHours":11.240336632873941,"endHours":12.240336632873941,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"12:14","end":"13:14","startHours":12.240336632873941,"endHours":13.240336632873941,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"13:14","end":"14:14","startHours":13.240336632873941,"endHours":14.240336632873941,"planetary_lord":"Moon"},{"name":"Hora 8","start":"14:14","end":"15:14","startHours":14.240336632873941,"endHours":15.240336632873941,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"15:14","end":"16:14","startHours":15.240336632873941,"endHours":16.24033663287394,"planetary_lord":"Venus"},{"name":"Hora 10","start":"16:14","end":"17:14","startHours":16.24033663287394,"endHours":17.24033663287394,"planetary_lord":"Sun"},{"name":"Hora 11","start":"17:14","end":"18:14","startHours":17.24033663287394,"endHours":18.24033663287394,"planetary_lord":"Mars"},{"name":"Hora 12","start":"18:14","end":"19:14","startHours":18.24033663287394,"endHours":19.24033663287394,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"19:14","end":"20:14","startHours":19.24033663287394,"endHours":20.24033663287394,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"20:14","end":"21:14","startHours":20.24033663287394,"endHours":21.24033663287394,"planetary_lord":"Moon"},{"name":"Hora 15","start":"21:14","end":"22:14","startHours":21.24033663287394,"endHours":22.24033663287394,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"22:14","end":"23:14","startHours":22.24033663287394,"endHours":23.24033663287394,"planetary_lord":"Venus"},{"name":"Hora 17","start":"23:14","end":"00:14","startHours":23.24033663287394,"endHours":24.24033663287394,"planetary_lord":"Sun"},{"name":"Hora 18","start":"00:14","end":"01:14","startHours":24.24033663287394,"endHours":25.24033663287394,"planetary_lord":"Mars"},{"name":"Hora 19","start":"01:14","end":"02:14","startHours":25.24033663287394,"endHours":26.24033663287394,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"02:14","end":"03:14","startHours":26.24033663287394,"endHours":27.24033663287394,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"03:14","end":"04:14","startHours":27.24033663287394,"endHours":28.24033663287394,"planetary_lord":"Moon"},{"name":"Hora 22","start":"04:14","end":"05:14","startHours":28.24033663287394,"endHours":29.24033663287394,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"05:14","end":"06:14","startHours":29.24033663287394,"endHours":30.24033663287394,"planetary_lord":"Venus"},{"name":"Hora 24","start":"06:14","end":"07:14","startHours":30.24033663287394,"endHours":31.24033663287394,"planetary_lord":"Sun"}],"taraBala":{"favorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Svātī","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"unfavorable_nakshatras":["Aśvinī","Punarvasu","Puṣya","Aśleṣā","Maghā","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Dhanu","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Makara","Mīna"]},"dishaShool":"North (Uttara)","chandraVasa":"East","rahuVasa":"South-West","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":-21.756918059558608,"eotMinutes":-8.265482636377905,"ayanamsa":23.6159}},"calendars":{"vikram_samvat":2040,"vikram_samvatsara":"Dhātṛ","saka_samvat":1905,"saka_samvatsara":"Rudhirodgāri","bengali_samvat":1390,"malayalam_era":1159,"nanakshahi_year":514,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Kṛṣṇa Pakṣa","solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Kṛṣṇa Trayodaśī · Vikram 2040 Dhātṛ · Śaka 1905 Rudhirodgāri"},"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},{"id":"pradosha-vrata","name":"Pradoṣa Vrata","name_sanskrit":"प्रदोष व्रत","tradition":"Shaiva","associated_deity":"Śiva","significance":"Twilight worship of Śiva on Trayodaśī.","vrata":true,"detection":{"any_of":[{"tithi_number":13},{"tithi_number":28}]},"precedence":7}],"todays_walk":{"walk":{"id":"budha-walk","name":"Budha Walk","name_sanskrit":"बुध यात्रा","type":"graha","description":"Discrimination + BG 2.41 (vyavasāyātmikā buddhi).","step_count":6,"url":"/walk/budha-walk"},"reason":"Budhavāra (Wednesday) — 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 January 12, 1983 CE · Ṛṣikeśa · Vidhyamitra","description":"January 12, 1983 CE for Ṛṣikeśa: Kṛṣṇa Trayodaśī, sūryodaya 07:14, sūryāsta 17:36.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1983-01-12","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1983-01-12","sa":"https://sa.vidhyamitra.com/city/rishikesh/1983-01-12","hi":"https://hi.vidhyamitra.com/city/rishikesh/1983-01-12","x-default":"https://vidhyamitra.com/city/rishikesh/1983-01-12"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-18T15:08:35.883Z","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":"2026-05-18T15:08:35.883Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-18T15:08:35.883Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}