{"id":"vidhyamitra:city-day:rishikesh:2009-12-06:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/2009-12-06","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2009-12-06","date_display":"December 6, 2009 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":2009,"month":12,"day":6,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2455171.770833,"kali_year":5111,"ahargana":1866706.2708,"sun":{"sidereal_longitude":229.5639,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":97.5293,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":227.9654,"elapsed_within_tithi_degrees":11.9654},"nakshatra":{"number":8,"name":"Puṣya","pada":2,"moon_longitude":97.5293,"elapsed_within_degrees":4.196},"yoga":{"number":25,"name":"Brahma","sum_longitude":327.0932},"karana":{"half_tithi_index":37,"name":"Bālava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"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":2009,"month":12,"day":6,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2455171.770833,"ahargana":1866706.2708,"kali_year":5111,"ayanamsa_lahiri":23.9917,"grahas":{"sun":{"sidereal_longitude":230.049041,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":100.78544099999999,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false,"latitude":-0.3614},"mars":{"sidereal_longitude":114.25684100000001,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":246.42204100000004,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":297.95374100000004,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":221.06174099999998,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":159.107841,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":272.9186,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":92.9186,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":7,"name":"Punarvasu","pada":4},"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":2009,"month":12,"day":6,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2455171.770833,"kali_year":5111,"ahargana":1866706.2708,"sun":{"sidereal_longitude":229.5639,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":97.5293,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":227.9654,"elapsed_within_tithi_degrees":11.9654},"nakshatra":{"number":8,"name":"Puṣya","pada":2,"moon_longitude":97.5293,"elapsed_within_degrees":4.196},"yoga":{"number":25,"name":"Brahma","sum_longitude":327.0932},"karana":{"half_tithi_index":37,"name":"Bālava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.361,"elongation":132.035},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.361,"opposition_distance":47.965}},"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":"07:00","sunsetLocal":"17:18","solarNoonLocal":"12:09","dayLengthHours":10.29297169753334,"dayLengthDisplay":"10 Hours 17 Mins 35 Secs","nightLengthDisplay":"13 Hours 42 Mins 25 Secs","moonriseLocal":"20:43","moonsetLocal":"10:21","rahuKala":{"name":"Rāhu Kāla","start":"16:00","end":"17:18","startHours":16.006309728662476,"endHours":17.292931190854144,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:09","end":"13:26","startHours":12.146445342087475,"endHours":13.433066804279143,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"14:43","end":"16:00","startHours":14.71968826647081,"endHours":16.006309728662476,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:24","end":"09:45","startHours":9.401652889411917,"endHours":9.744751945996363,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:26","end":"07:42","startHours":7.428833314051361,"endHours":7.703312559318917,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:48","end":"12:29","startHours":11.80334628550303,"endHours":12.489544398671919,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:38","end":"06:19","startHours":5.627563266983026,"endHours":6.313761380151916,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:09","end":"07:00","startHours":6.1422118518596935,"endHours":6.999959493320805,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:52","end":"14:33","startHours":13.861940625009698,"endHours":14.548138738178586,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:06","end":"17:30","startHours":17.092931190854145,"endHours":17.492931190854144,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:18","end":"17:43","startHours":17.292931190854144,"endHours":17.7218050115847,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:03","end":"18:48","startHours":17.042931190854144,"endHours":18.792931190854144,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:48","end":"00:29","startHours":23.80334628550303,"endHours":24.48954439867192,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"07:00","end":"08:17","startHours":6.999959493320805,"endHours":8.286580955512473,"quality":"inauspicious"},{"name":"Chala","start":"08:17","end":"09:34","startHours":8.286580955512473,"endHours":9.57320241770414,"quality":"neutral"},{"name":"Labha","start":"09:34","end":"10:52","startHours":9.57320241770414,"endHours":10.859823879895806,"quality":"auspicious"},{"name":"Amṛta","start":"10:52","end":"12:09","startHours":10.859823879895806,"endHours":12.146445342087475,"quality":"auspicious"},{"name":"Kāla","start":"12:09","end":"13:26","startHours":12.146445342087475,"endHours":13.433066804279143,"quality":"inauspicious"},{"name":"Śubha","start":"13:26","end":"14:43","startHours":13.433066804279143,"endHours":14.71968826647081,"quality":"auspicious"},{"name":"Roga","start":"14:43","end":"16:00","startHours":14.71968826647081,"endHours":16.006309728662476,"quality":"inauspicious"},{"name":"Udveg","start":"16:00","end":"17:18","startHours":16.006309728662476,"endHours":17.292931190854144,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"17:18","end":"19:00","startHours":17.292931190854144,"endHours":19.006309728662476,"quality":"auspicious"},{"name":"Roga","start":"19:00","end":"20:43","startHours":19.006309728662476,"endHours":20.71968826647081,"quality":"inauspicious"},{"name":"Udveg","start":"20:43","end":"22:26","startHours":20.71968826647081,"endHours":22.433066804279143,"quality":"inauspicious"},{"name":"Chala","start":"22:26","end":"00:09","startHours":22.433066804279143,"endHours":24.146445342087475,"quality":"neutral"},{"name":"Labha","start":"00:09","end":"01:52","startHours":24.146445342087475,"endHours":25.859823879895806,"quality":"auspicious"},{"name":"Amṛta","start":"01:52","end":"03:34","startHours":25.859823879895806,"endHours":27.573202417704138,"quality":"auspicious"},{"name":"Kāla","start":"03:34","end":"05:17","startHours":27.573202417704138,"endHours":29.286580955512473,"quality":"inauspicious"},{"name":"Śubha","start":"05:17","end":"07:00","startHours":29.286580955512473,"endHours":30.999959493320805,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:00","end":"08:00","startHours":6.999959493320805,"endHours":7.999959493320805,"planetary_lord":"Sun"},{"name":"Hora 2","start":"08:00","end":"09:00","startHours":7.999959493320805,"endHours":8.999959493320805,"planetary_lord":"Mars"},{"name":"Hora 3","start":"09:00","end":"10:00","startHours":8.999959493320805,"endHours":9.999959493320805,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"10:00","end":"11:00","startHours":9.999959493320805,"endHours":10.999959493320805,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"11:00","end":"12:00","startHours":10.999959493320805,"endHours":11.999959493320805,"planetary_lord":"Moon"},{"name":"Hora 6","start":"12:00","end":"13:00","startHours":11.999959493320805,"endHours":12.999959493320805,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"13:00","end":"14:00","startHours":12.999959493320805,"endHours":13.999959493320805,"planetary_lord":"Venus"},{"name":"Hora 8","start":"14:00","end":"15:00","startHours":13.999959493320805,"endHours":14.999959493320805,"planetary_lord":"Sun"},{"name":"Hora 9","start":"15:00","end":"16:00","startHours":14.999959493320805,"endHours":15.999959493320805,"planetary_lord":"Mars"},{"name":"Hora 10","start":"16:00","end":"17:00","startHours":15.999959493320805,"endHours":16.999959493320805,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"17:00","end":"18:00","startHours":16.999959493320805,"endHours":17.999959493320805,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"18:00","end":"19:00","startHours":17.999959493320805,"endHours":18.999959493320805,"planetary_lord":"Moon"},{"name":"Hora 13","start":"19:00","end":"20:00","startHours":18.999959493320805,"endHours":19.999959493320805,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"20:00","end":"21:00","startHours":19.999959493320805,"endHours":20.999959493320805,"planetary_lord":"Venus"},{"name":"Hora 15","start":"21:00","end":"22:00","startHours":20.999959493320805,"endHours":21.999959493320805,"planetary_lord":"Sun"},{"name":"Hora 16","start":"22:00","end":"23:00","startHours":21.999959493320805,"endHours":22.999959493320805,"planetary_lord":"Mars"},{"name":"Hora 17","start":"23:00","end":"00:00","startHours":22.999959493320805,"endHours":23.999959493320805,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"00:00","end":"01:00","startHours":23.999959493320805,"endHours":24.999959493320805,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"01:00","end":"02:00","startHours":24.999959493320805,"endHours":25.999959493320805,"planetary_lord":"Moon"},{"name":"Hora 20","start":"02:00","end":"03:00","startHours":25.999959493320805,"endHours":26.999959493320805,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"03:00","end":"04:00","startHours":26.999959493320805,"endHours":27.999959493320805,"planetary_lord":"Venus"},{"name":"Hora 22","start":"04:00","end":"05:00","startHours":27.999959493320805,"endHours":28.999959493320805,"planetary_lord":"Sun"},{"name":"Hora 23","start":"05:00","end":"06:00","startHours":28.999959493320805,"endHours":29.999959493320805,"planetary_lord":"Mars"},{"name":"Hora 24","start":"06:00","end":"07:00","startHours":29.999959493320805,"endHours":30.999959493320805,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Revatī"],"unfavorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Citrā","Svātī","Viśākhā","Anurādhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara 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":"West (Paścim)","chandraVasa":"South-West","rahuVasa":"North-East","anandadiYoga":{"name":"Śrīvatsa","quality":"Auspicious"},"drikRitu":"Hemanta (Pre-winter) (Drik)","vedicRitu":"Śarad (Autumn)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-22.482599578065468,"eotMinutes":8.142879474751563,"ayanamsa":23.9917}},"calendars":{"vikram_samvat":2066,"vikram_samvatsara":"Śubhakṛt","saka_samvat":1931,"saka_samvatsara":"Virodhi","bengali_samvat":1416,"malayalam_era":1185,"nanakshahi_year":540,"lunar_month":"Mārgaśīrṣa","lunar_month_paksha_full":"Mārgaśīrṣa Kṛṣṇa Pakṣa","solar_month":"Vṛścika (Kārttikai)","ritu":"Hemanta (Pre-winter)","display_summary":"Mārgaśīrṣa Kṛṣṇa Caturthī · Vikram 2066 Śubhakṛt · Śaka 1931 Virodhi"},"festivals":[{"id":"vrischika-sankranti","name":"Vṛścika Saṅkrānti","name_sanskrit":"वृश्चिक सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Scorpio.","vrata":false,"detection":{"sun_rashi":"Vṛścika"},"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":"surya-walk","name":"Sūrya Walk","name_sanskrit":"सूर्य यात्रा","type":"graha","description":"Self-illumination + BG 4.1 (Sun-lineage of Gītā transmission).","step_count":6,"url":"/walk/surya-walk"},"reason":"Ravivāra (Sunday) — 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 December 6, 2009 CE · Ṛṣikeśa · Vidhyamitra","description":"December 6, 2009 CE for Ṛṣikeśa: Kṛṣṇa Caturthī, sūryodaya 07:00, sūryāsta 17:18.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/2009-12-06","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/2009-12-06","sa":"https://sa.vidhyamitra.com/city/rishikesh/2009-12-06","hi":"https://hi.vidhyamitra.com/city/rishikesh/2009-12-06","x-default":"https://vidhyamitra.com/city/rishikesh/2009-12-06"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-17T12:19:08.803Z","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":"2026-05-17T12:19:08.803Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-17T12:19:08.803Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}