{"id":"vidhyamitra:city-day:rishikesh:2107-12-22:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/2107-12-22","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2107-12-22","date_display":"December 22, 2107 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":2107,"month":12,"day":22,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2490980.770833,"kali_year":5209,"ahargana":1902515.2708,"sun":{"sidereal_longitude":243.5501,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":330.4964,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":86.9463,"elapsed_within_tithi_degrees":2.9463},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4,"moon_longitude":330.4964,"elapsed_within_degrees":10.4964},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":214.0464},"karana":{"half_tithi_index":14,"name":"Viṣṭi"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"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":2107,"month":12,"day":22,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2490980.770833,"ahargana":1902515.2708,"kali_year":5209,"ayanamsa_lahiri":25.3613,"grahas":{"sun":{"sidereal_longitude":244.15077399999996,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false},"moon":{"sidereal_longitude":328.86957400000006,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":3},"retrograde":false,"latitude":1.9065},"mars":{"sidereal_longitude":154.45437400000003,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":259.6855740000001,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":47.86507399999999,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":3},"retrograde":true},"venus":{"sidereal_longitude":280.51357400000006,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":261.30127400000003,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":175.5854,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":355.5854,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","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":2107,"month":12,"day":22,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2490980.770833,"kali_year":5209,"ahargana":1902515.2708,"sun":{"sidereal_longitude":243.5501,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":330.4964,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":86.9463,"elapsed_within_tithi_degrees":2.9463},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4,"moon_longitude":330.4964,"elapsed_within_degrees":10.4964},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":214.0464},"karana":{"half_tithi_index":14,"name":"Viṣṭi"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":1.907,"elongation":86.946},"lunar":{"type":"lunar","occurs":false,"moon_latitude":1.907,"opposition_distance":93.054}},"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":"07:10","sunsetLocal":"17:22","solarNoonLocal":"12:16","dayLengthHours":10.204813418093556,"dayLengthDisplay":"10 Hours 12 Mins 17 Secs","nightLengthDisplay":"13 Hours 47 Mins 43 Secs","moonriseLocal":"11:58","moonsetLocal":"23:52","rahuKala":{"name":"Rāhu Kāla","start":"13:33","end":"14:49","startHours":13.54254489226969,"endHours":14.818146569531384,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:10","end":"08:26","startHours":7.164536505961218,"endHours":8.440138183222912,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:43","end":"10:59","startHours":9.715739860484607,"endHours":10.991341537746301,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:33","end":"09:53","startHours":9.545659636849713,"endHours":9.8858200841195,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:35","end":"07:52","startHours":7.58973706504845,"endHours":7.861865422864278,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:56","end":"12:36","startHours":11.92678276773821,"endHours":12.60710366227778,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:48","end":"06:29","startHours":5.803894716882077,"endHours":6.484215611421647,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:19","end":"07:10","startHours":6.314135387786755,"endHours":7.164536505961218,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:58","end":"14:39","startHours":13.967745451356922,"endHours":14.648066345896492,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:10","end":"17:34","startHours":17.169349924054774,"endHours":17.569349924054773,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:22","end":"17:48","startHours":17.369349924054774,"endHours":17.794550483142004,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:07","end":"18:52","startHours":17.119349924054774,"endHours":18.869349924054774,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:56","end":"00:36","startHours":23.92678276773821,"endHours":24.60710366227778,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"07:10","end":"08:26","startHours":7.164536505961218,"endHours":8.440138183222912,"quality":"auspicious"},{"name":"Roga","start":"08:26","end":"09:43","startHours":8.440138183222912,"endHours":9.715739860484607,"quality":"inauspicious"},{"name":"Udveg","start":"09:43","end":"10:59","startHours":9.715739860484607,"endHours":10.991341537746301,"quality":"inauspicious"},{"name":"Chala","start":"10:59","end":"12:16","startHours":10.991341537746301,"endHours":12.266943215007995,"quality":"neutral"},{"name":"Labha","start":"12:16","end":"13:33","startHours":12.266943215007995,"endHours":13.54254489226969,"quality":"auspicious"},{"name":"Amṛta","start":"13:33","end":"14:49","startHours":13.54254489226969,"endHours":14.818146569531384,"quality":"auspicious"},{"name":"Kāla","start":"14:49","end":"16:06","startHours":14.818146569531384,"endHours":16.09374824679308,"quality":"inauspicious"},{"name":"Śubha","start":"16:06","end":"17:22","startHours":16.09374824679308,"endHours":17.369349924054774,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"17:22","end":"19:06","startHours":17.369349924054774,"endHours":19.09374824679308,"quality":"auspicious"},{"name":"Kāla","start":"19:06","end":"20:49","startHours":19.09374824679308,"endHours":20.818146569531386,"quality":"inauspicious"},{"name":"Śubha","start":"20:49","end":"22:33","startHours":20.818146569531386,"endHours":22.54254489226969,"quality":"auspicious"},{"name":"Roga","start":"22:33","end":"00:16","startHours":22.54254489226969,"endHours":24.266943215007995,"quality":"inauspicious"},{"name":"Udveg","start":"00:16","end":"01:59","startHours":24.266943215007995,"endHours":25.9913415377463,"quality":"inauspicious"},{"name":"Chala","start":"01:59","end":"03:43","startHours":25.9913415377463,"endHours":27.715739860484607,"quality":"neutral"},{"name":"Labha","start":"03:43","end":"05:26","startHours":27.715739860484607,"endHours":29.440138183222913,"quality":"auspicious"},{"name":"Amṛta","start":"05:26","end":"07:10","startHours":29.440138183222913,"endHours":31.164536505961216,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:10","end":"08:10","startHours":7.164536505961218,"endHours":8.164536505961218,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"08:10","end":"09:10","startHours":8.164536505961218,"endHours":9.164536505961218,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"09:10","end":"10:10","startHours":9.164536505961218,"endHours":10.164536505961218,"planetary_lord":"Moon"},{"name":"Hora 4","start":"10:10","end":"11:10","startHours":10.164536505961218,"endHours":11.164536505961218,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"11:10","end":"12:10","startHours":11.164536505961218,"endHours":12.164536505961218,"planetary_lord":"Venus"},{"name":"Hora 6","start":"12:10","end":"13:10","startHours":12.164536505961218,"endHours":13.164536505961218,"planetary_lord":"Sun"},{"name":"Hora 7","start":"13:10","end":"14:10","startHours":13.164536505961218,"endHours":14.164536505961218,"planetary_lord":"Mars"},{"name":"Hora 8","start":"14:10","end":"15:10","startHours":14.164536505961218,"endHours":15.164536505961218,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"15:10","end":"16:10","startHours":15.164536505961218,"endHours":16.164536505961216,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"16:10","end":"17:10","startHours":16.164536505961216,"endHours":17.164536505961216,"planetary_lord":"Moon"},{"name":"Hora 11","start":"17:10","end":"18:10","startHours":17.164536505961216,"endHours":18.164536505961216,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"18:10","end":"19:10","startHours":18.164536505961216,"endHours":19.164536505961216,"planetary_lord":"Venus"},{"name":"Hora 13","start":"19:10","end":"20:10","startHours":19.164536505961216,"endHours":20.164536505961216,"planetary_lord":"Sun"},{"name":"Hora 14","start":"20:10","end":"21:10","startHours":20.164536505961216,"endHours":21.164536505961216,"planetary_lord":"Mars"},{"name":"Hora 15","start":"21:10","end":"22:10","startHours":21.164536505961216,"endHours":22.164536505961216,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"22:10","end":"23:10","startHours":22.164536505961216,"endHours":23.164536505961216,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"23:10","end":"00:10","startHours":23.164536505961216,"endHours":24.164536505961216,"planetary_lord":"Moon"},{"name":"Hora 18","start":"00:10","end":"01:10","startHours":24.164536505961216,"endHours":25.164536505961216,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"01:10","end":"02:10","startHours":25.164536505961216,"endHours":26.164536505961216,"planetary_lord":"Venus"},{"name":"Hora 20","start":"02:10","end":"03:10","startHours":26.164536505961216,"endHours":27.164536505961216,"planetary_lord":"Sun"},{"name":"Hora 21","start":"03:10","end":"04:10","startHours":27.164536505961216,"endHours":28.164536505961216,"planetary_lord":"Mars"},{"name":"Hora 22","start":"04:10","end":"05:10","startHours":28.164536505961216,"endHours":29.164536505961216,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"05:10","end":"06:10","startHours":29.164536505961216,"endHours":30.164536505961216,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"06:10","end":"07:10","startHours":30.164536505961216,"endHours":31.164536505961216,"planetary_lord":"Moon"}],"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","Karka","Siṃha","Vṛścika","Dhanu","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Makara","Mīna"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"South","rahuVasa":"North-West","anandadiYoga":{"name":"Mānasa","quality":"Auspicious"},"drikRitu":"Hemanta (Pre-winter)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-23.435599392678295,"eotMinutes":0.9130070995203906,"ayanamsa":25.3613}},"calendars":{"vikram_samvat":2164,"vikram_samvatsara":"Vikrama","saka_samvat":2029,"saka_samvatsara":"Prabhava","bengali_samvat":1514,"malayalam_era":1283,"nanakshahi_year":638,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Śukla Pakṣa","solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Śukla Aṣṭamī · Vikram 2164 Vikrama · Śaka 2029 Prabhava"},"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":"guru-walk","name":"Bṛhaspati Walk","name_sanskrit":"गुरु यात्रा","type":"graha","description":"Wisdom transmission + BG 4.34.","step_count":8,"url":"/walk/guru-walk"},"reason":"Guruvāra (Thursday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3137-12-25","event":"Bhīṣma's Mahaprasthan","chart_id":"bhishma","shared_marker":"same Śukla Aṣṭamī","url":"/day/-3137-12-25","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 22, 2107 CE · Ṛṣikeśa · Vidhyamitra","description":"December 22, 2107 CE for Ṛṣikeśa: Śukla Aṣṭamī, sūryodaya 07:10, sūryāsta 17:22.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/2107-12-22","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/2107-12-22","sa":"https://sa.vidhyamitra.com/city/rishikesh/2107-12-22","hi":"https://hi.vidhyamitra.com/city/rishikesh/2107-12-22","x-default":"https://vidhyamitra.com/city/rishikesh/2107-12-22"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-21T17:02:18.293Z","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":"2026-05-21T17:02:18.293Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-21T17:02:18.293Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}