{"id":"vidhyamitra:city-day:rishikesh:2107-12-30:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/2107-12-30","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2107-12-30","date_display":"December 30, 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":30,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2490988.770833,"kali_year":5209,"ahargana":1902523.2708,"sun":{"sidereal_longitude":251.7701,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":70.6401,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":178.87,"elapsed_within_tithi_degrees":10.87},"nakshatra":{"number":6,"name":"Ārdrā","pada":2,"moon_longitude":70.6401,"elapsed_within_degrees":3.9735},"yoga":{"number":25,"name":"Brahma","sum_longitude":322.4103},"karana":{"half_tithi_index":29,"name":"Bava"},"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":2107,"month":12,"day":30,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2490988.770833,"ahargana":1902523.2708,"kali_year":5209,"ayanamsa_lahiri":25.3616,"grahas":{"sun":{"sidereal_longitude":252.29836799999998,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":4},"retrograde":false},"moon":{"sidereal_longitude":72.74196799999999,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":2},"retrograde":false,"latitude":-4.356},"mars":{"sidereal_longitude":157.85706800000003,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":270.42076799999995,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":46.89506799999998,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":3},"retrograde":true},"venus":{"sidereal_longitude":290.176868,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":262.22876799999995,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":175.1615,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":355.1615,"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":30,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2490988.770833,"kali_year":5209,"ahargana":1902523.2708,"sun":{"sidereal_longitude":251.7701,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":70.6401,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":178.87,"elapsed_within_tithi_degrees":10.87},"nakshatra":{"number":6,"name":"Ārdrā","pada":2,"moon_longitude":70.6401,"elapsed_within_degrees":3.9735},"yoga":{"number":25,"name":"Brahma","sum_longitude":322.4103},"karana":{"half_tithi_index":29,"name":"Bava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.356,"elongation":178.87},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.356,"opposition_distance":1.13}},"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":"07:13","sunsetLocal":"17:26","solarNoonLocal":"12:20","dayLengthHours":10.22534445300618,"dayLengthDisplay":"10 Hours 13 Mins 31 Secs","nightLengthDisplay":"13 Hours 46 Mins 29 Secs","moonriseLocal":"17:21","moonsetLocal":"07:22","rahuKala":{"name":"Rāhu Kāla","start":"11:03","end":"12:20","startHours":11.050713518378764,"endHours":12.328881575004537,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"14:53","end":"16:10","startHours":14.885217688256082,"endHours":16.163385744881854,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:30","end":"09:46","startHours":8.49437740512722,"endHours":9.772545461752992,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:36","end":"09:57","startHours":9.602123054202888,"endHours":9.942967869303095,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:39","end":"07:55","startHours":7.642265367376705,"endHours":7.91494121945687,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:59","end":"12:40","startHours":11.98803675990433,"endHours":12.669726390104744,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:51","end":"06:32","startHours":5.852830088100624,"endHours":6.534519718301035,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:22","end":"07:13","startHours":6.364097310750933,"endHours":7.216209348501447,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:02","end":"14:43","startHours":14.033105650505567,"endHours":14.714795280705978,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:14","end":"17:38","startHours":17.241553801507628,"endHours":17.641553801507627,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:26","end":"17:52","startHours":17.441553801507627,"endHours":17.867609820382885,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:11","end":"18:56","startHours":17.191553801507627,"endHours":18.941553801507627,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:59","end":"00:40","startHours":23.988036759904332,"endHours":24.669726390104742,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"07:13","end":"08:30","startHours":7.216209348501447,"endHours":8.49437740512722,"quality":"neutral"},{"name":"Labha","start":"08:30","end":"09:46","startHours":8.49437740512722,"endHours":9.772545461752992,"quality":"auspicious"},{"name":"Amṛta","start":"09:46","end":"11:03","startHours":9.772545461752992,"endHours":11.050713518378764,"quality":"auspicious"},{"name":"Kāla","start":"11:03","end":"12:20","startHours":11.050713518378764,"endHours":12.328881575004537,"quality":"inauspicious"},{"name":"Śubha","start":"12:20","end":"13:36","startHours":12.328881575004537,"endHours":13.60704963163031,"quality":"auspicious"},{"name":"Roga","start":"13:36","end":"14:53","startHours":13.60704963163031,"endHours":14.885217688256082,"quality":"inauspicious"},{"name":"Udveg","start":"14:53","end":"16:10","startHours":14.885217688256082,"endHours":16.163385744881854,"quality":"inauspicious"},{"name":"Chala","start":"16:10","end":"17:26","startHours":16.163385744881854,"endHours":17.441553801507627,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"17:26","end":"19:10","startHours":17.441553801507627,"endHours":19.163385744881854,"quality":"inauspicious"},{"name":"Udveg","start":"19:10","end":"20:53","startHours":19.163385744881854,"endHours":20.885217688256084,"quality":"inauspicious"},{"name":"Chala","start":"20:53","end":"22:36","startHours":20.885217688256084,"endHours":22.60704963163031,"quality":"neutral"},{"name":"Labha","start":"22:36","end":"00:20","startHours":22.60704963163031,"endHours":24.328881575004537,"quality":"auspicious"},{"name":"Amṛta","start":"00:20","end":"02:03","startHours":24.328881575004537,"endHours":26.050713518378764,"quality":"auspicious"},{"name":"Kāla","start":"02:03","end":"03:46","startHours":26.050713518378764,"endHours":27.77254546175299,"quality":"inauspicious"},{"name":"Śubha","start":"03:46","end":"05:30","startHours":27.77254546175299,"endHours":29.49437740512722,"quality":"auspicious"},{"name":"Roga","start":"05:30","end":"07:13","startHours":29.49437740512722,"endHours":31.216209348501447,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:13","end":"08:13","startHours":7.216209348501447,"endHours":8.216209348501447,"planetary_lord":"Venus"},{"name":"Hora 2","start":"08:13","end":"09:13","startHours":8.216209348501447,"endHours":9.216209348501447,"planetary_lord":"Sun"},{"name":"Hora 3","start":"09:13","end":"10:13","startHours":9.216209348501447,"endHours":10.216209348501447,"planetary_lord":"Mars"},{"name":"Hora 4","start":"10:13","end":"11:13","startHours":10.216209348501447,"endHours":11.216209348501447,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"11:13","end":"12:13","startHours":11.216209348501447,"endHours":12.216209348501447,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"12:13","end":"13:13","startHours":12.216209348501447,"endHours":13.216209348501447,"planetary_lord":"Moon"},{"name":"Hora 7","start":"13:13","end":"14:13","startHours":13.216209348501447,"endHours":14.216209348501447,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"14:13","end":"15:13","startHours":14.216209348501447,"endHours":15.216209348501447,"planetary_lord":"Venus"},{"name":"Hora 9","start":"15:13","end":"16:13","startHours":15.216209348501447,"endHours":16.216209348501447,"planetary_lord":"Sun"},{"name":"Hora 10","start":"16:13","end":"17:13","startHours":16.216209348501447,"endHours":17.216209348501447,"planetary_lord":"Mars"},{"name":"Hora 11","start":"17:13","end":"18:13","startHours":17.216209348501447,"endHours":18.216209348501447,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"18:13","end":"19:13","startHours":18.216209348501447,"endHours":19.216209348501447,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"19:13","end":"20:13","startHours":19.216209348501447,"endHours":20.216209348501447,"planetary_lord":"Moon"},{"name":"Hora 14","start":"20:13","end":"21:13","startHours":20.216209348501447,"endHours":21.216209348501447,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"21:13","end":"22:13","startHours":21.216209348501447,"endHours":22.216209348501447,"planetary_lord":"Venus"},{"name":"Hora 16","start":"22:13","end":"23:13","startHours":22.216209348501447,"endHours":23.216209348501447,"planetary_lord":"Sun"},{"name":"Hora 17","start":"23:13","end":"00:13","startHours":23.216209348501447,"endHours":24.216209348501447,"planetary_lord":"Mars"},{"name":"Hora 18","start":"00:13","end":"01:13","startHours":24.216209348501447,"endHours":25.216209348501447,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"01:13","end":"02:13","startHours":25.216209348501447,"endHours":26.216209348501447,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"02:13","end":"03:13","startHours":26.216209348501447,"endHours":27.216209348501447,"planetary_lord":"Moon"},{"name":"Hora 21","start":"03:13","end":"04:13","startHours":27.216209348501447,"endHours":28.216209348501447,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"04:13","end":"05:13","startHours":28.216209348501447,"endHours":29.216209348501447,"planetary_lord":"Venus"},{"name":"Hora 23","start":"05:13","end":"06:13","startHours":29.216209348501447,"endHours":30.216209348501447,"planetary_lord":"Sun"},{"name":"Hora 24","start":"06:13","end":"07:13","startHours":30.216209348501447,"endHours":31.216209348501447,"planetary_lord":"Mars"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Punarvasu","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Uttara Phalgunī","Hasta","Citrā","Svātī","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"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":"West (Paścim)","chandraVasa":"South","rahuVasa":"South-East","anandadiYoga":{"name":"Cara","quality":"Auspicious"},"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":-23.215049830711695,"eotMinutes":-2.803294500272213,"ayanamsa":25.3616}},"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 Pūrṇimā · Vikram 2164 Vikrama · Śaka 2029 Prabhava"},"festivals":[{"id":"paush-purnima","name":"Pauṣa Pūrṇimā (Śākambharī Devī Jayantī)","name_sanskrit":"पौष पूर्णिमा","tradition":"Pan-Hindu","associated_deity":"Devī Śākambharī","significance":"Manifestation of Devī Śākambharī (vegetation-mother).","vrata":true,"detection":{"tithi_number":15,"tithi_paksha":"Śukla","lunar_month":"Pauṣa"},"precedence":3},{"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":"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":[{"historical_date":"-3137-10-04","event":"Mahābhārata Day 1 (Bhagavad Gītā delivered)","chart_id":"krishna","shared_marker":"same Śukla Pūrṇimā","url":"/day/-3137-10-04","relevance":0.5},{"historical_date":"-0562-04-11","event":"Bhagavān Buddha's birth at Lumbinī","chart_id":"buddha","shared_marker":"same Śukla Pūrṇimā","url":"/day/-0562-04-11","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 30, 2107 CE · Ṛṣikeśa · Vidhyamitra","description":"December 30, 2107 CE for Ṛṣikeśa: Śukla Pūrṇimā, sūryodaya 07:13, sūryāsta 17:26.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/2107-12-30","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/2107-12-30","sa":"https://sa.vidhyamitra.com/city/rishikesh/2107-12-30","hi":"https://hi.vidhyamitra.com/city/rishikesh/2107-12-30","x-default":"https://vidhyamitra.com/city/rishikesh/2107-12-30"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-21T03:54:41.649Z","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":"2026-05-21T03:54:41.649Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-21T03:54:41.649Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}