{"id":"vidhyamitra:city-day:rishikesh:2017-12-30:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/2017-12-30","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2017-12-30","date_display":"December 30, 2017 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":2017,"month":12,"day":30,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458117.770833,"kali_year":5119,"ahargana":1869652.2708,"sun":{"sidereal_longitude":254.1223,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":33.1239,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":12,"name":"Dvādaśī","paksha":"Śukla","full_name":"Śukla Dvādaśī","elongation_degrees":139.0016,"elapsed_within_tithi_degrees":7.0016},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2,"moon_longitude":33.1239,"elapsed_within_degrees":6.4572},"yoga":{"number":22,"name":"Sādhya","sum_longitude":287.2462},"karana":{"half_tithi_index":23,"name":"Bālava"},"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":2017,"month":12,"day":30,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2458117.770833,"ahargana":1869652.2708,"kali_year":5119,"ayanamsa_lahiri":24.1044,"grahas":{"sun":{"sidereal_longitude":254.41798199999994,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":31.168082000000027,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2},"retrograde":false,"latitude":-4.4728},"mars":{"sidereal_longitude":198.53698200000008,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":231.71608200000003,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":202.261882,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":251.72098200000005,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":246.907782,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":116.8253,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":296.8253,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"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":2017,"month":12,"day":30,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458117.770833,"kali_year":5119,"ahargana":1869652.2708,"sun":{"sidereal_longitude":254.1223,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":33.1239,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":12,"name":"Dvādaśī","paksha":"Śukla","full_name":"Śukla Dvādaśī","elongation_degrees":139.0016,"elapsed_within_tithi_degrees":7.0016},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2,"moon_longitude":33.1239,"elapsed_within_degrees":6.4572},"yoga":{"number":22,"name":"Sādhya","sum_longitude":287.2462},"karana":{"half_tithi_index":23,"name":"Bālava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.473,"elongation":139.002},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.473,"opposition_distance":40.998}},"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":"17:27","solarNoonLocal":"12:20","dayLengthHours":10.230222008336149,"dayLengthDisplay":"10 Hours 13 Mins 49 Secs","nightLengthDisplay":"13 Hours 46 Mins 11 Secs","moonriseLocal":"14:38","moonsetLocal":"04:16","rahuKala":{"name":"Rāhu Kāla","start":"09:46","end":"11:03","startHours":9.7713260729205,"endHours":11.05010382396252,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:36","end":"14:53","startHours":13.607659326046555,"endHours":14.886437077088575,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:13","end":"08:30","startHours":7.213770570836463,"endHours":8.49254832187848,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:36","end":"09:57","startHours":9.600822372781565,"endHours":9.941829773059435,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:38","end":"07:55","startHours":7.640029821183802,"endHours":7.9128357414060995,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:59","end":"12:40","startHours":11.987874174726665,"endHours":12.66988897528241,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:51","end":"06:32","startHours":5.8497409697249765,"endHours":6.53175577028072,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:22","end":"07:13","startHours":6.361252070141783,"endHours":7.213770570836463,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:02","end":"14:43","startHours":14.033918576393894,"endHours":14.715933376949637,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:15","end":"17:39","startHours":17.243992579172613,"endHours":17.64399257917261,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:27","end":"17:52","startHours":17.443992579172612,"endHours":17.87025182951995,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:12","end":"18:57","startHours":17.193992579172612,"endHours":18.943992579172612,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:59","end":"00:40","startHours":23.987874174726667,"endHours":24.669888975282408,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"07:13","end":"08:30","startHours":7.213770570836463,"endHours":8.49254832187848,"quality":"inauspicious"},{"name":"Śubha","start":"08:30","end":"09:46","startHours":8.49254832187848,"endHours":9.7713260729205,"quality":"auspicious"},{"name":"Roga","start":"09:46","end":"11:03","startHours":9.7713260729205,"endHours":11.05010382396252,"quality":"inauspicious"},{"name":"Udveg","start":"11:03","end":"12:20","startHours":11.05010382396252,"endHours":12.328881575004537,"quality":"inauspicious"},{"name":"Chala","start":"12:20","end":"13:36","startHours":12.328881575004537,"endHours":13.607659326046555,"quality":"neutral"},{"name":"Labha","start":"13:36","end":"14:53","startHours":13.607659326046555,"endHours":14.886437077088575,"quality":"auspicious"},{"name":"Amṛta","start":"14:53","end":"16:10","startHours":14.886437077088575,"endHours":16.165214828130594,"quality":"auspicious"},{"name":"Kāla","start":"16:10","end":"17:27","startHours":16.165214828130594,"endHours":17.443992579172612,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"17:27","end":"19:10","startHours":17.443992579172612,"endHours":19.165214828130594,"quality":"auspicious"},{"name":"Amṛta","start":"19:10","end":"20:53","startHours":19.165214828130594,"endHours":20.886437077088573,"quality":"auspicious"},{"name":"Kāla","start":"20:53","end":"22:36","startHours":20.886437077088573,"endHours":22.607659326046555,"quality":"inauspicious"},{"name":"Śubha","start":"22:36","end":"00:20","startHours":22.607659326046555,"endHours":24.328881575004537,"quality":"auspicious"},{"name":"Roga","start":"00:20","end":"02:03","startHours":24.328881575004537,"endHours":26.05010382396252,"quality":"inauspicious"},{"name":"Udveg","start":"02:03","end":"03:46","startHours":26.05010382396252,"endHours":27.771326072920502,"quality":"inauspicious"},{"name":"Chala","start":"03:46","end":"05:30","startHours":27.771326072920502,"endHours":29.49254832187848,"quality":"neutral"},{"name":"Labha","start":"05:30","end":"07:13","startHours":29.49254832187848,"endHours":31.213770570836463,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:13","end":"08:13","startHours":7.213770570836463,"endHours":8.213770570836463,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"08:13","end":"09:13","startHours":8.213770570836463,"endHours":9.213770570836463,"planetary_lord":"Moon"},{"name":"Hora 3","start":"09:13","end":"10:13","startHours":9.213770570836463,"endHours":10.213770570836463,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"10:13","end":"11:13","startHours":10.213770570836463,"endHours":11.213770570836463,"planetary_lord":"Venus"},{"name":"Hora 5","start":"11:13","end":"12:13","startHours":11.213770570836463,"endHours":12.213770570836463,"planetary_lord":"Sun"},{"name":"Hora 6","start":"12:13","end":"13:13","startHours":12.213770570836463,"endHours":13.213770570836463,"planetary_lord":"Mars"},{"name":"Hora 7","start":"13:13","end":"14:13","startHours":13.213770570836463,"endHours":14.213770570836463,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"14:13","end":"15:13","startHours":14.213770570836463,"endHours":15.213770570836463,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"15:13","end":"16:13","startHours":15.213770570836463,"endHours":16.213770570836463,"planetary_lord":"Moon"},{"name":"Hora 10","start":"16:13","end":"17:13","startHours":16.213770570836463,"endHours":17.213770570836463,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"17:13","end":"18:13","startHours":17.213770570836463,"endHours":18.213770570836463,"planetary_lord":"Venus"},{"name":"Hora 12","start":"18:13","end":"19:13","startHours":18.213770570836463,"endHours":19.213770570836463,"planetary_lord":"Sun"},{"name":"Hora 13","start":"19:13","end":"20:13","startHours":19.213770570836463,"endHours":20.213770570836463,"planetary_lord":"Mars"},{"name":"Hora 14","start":"20:13","end":"21:13","startHours":20.213770570836463,"endHours":21.213770570836463,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"21:13","end":"22:13","startHours":21.213770570836463,"endHours":22.213770570836463,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"22:13","end":"23:13","startHours":22.213770570836463,"endHours":23.213770570836463,"planetary_lord":"Moon"},{"name":"Hora 17","start":"23:13","end":"00:13","startHours":23.213770570836463,"endHours":24.213770570836463,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"00:13","end":"01:13","startHours":24.213770570836463,"endHours":25.213770570836463,"planetary_lord":"Venus"},{"name":"Hora 19","start":"01:13","end":"02:13","startHours":25.213770570836463,"endHours":26.213770570836463,"planetary_lord":"Sun"},{"name":"Hora 20","start":"02:13","end":"03:13","startHours":26.213770570836463,"endHours":27.213770570836463,"planetary_lord":"Mars"},{"name":"Hora 21","start":"03:13","end":"04:13","startHours":27.213770570836463,"endHours":28.213770570836463,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"04:13","end":"05:13","startHours":28.213770570836463,"endHours":29.213770570836463,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"05:13","end":"06:13","startHours":29.213770570836463,"endHours":30.213770570836463,"planetary_lord":"Moon"},{"name":"Hora 24","start":"06:13","end":"07:13","startHours":30.213770570836463,"endHours":31.213770570836463,"planetary_lord":"Mercury"}],"taraBala":{"favorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Hasta","Citrā","Svātī","Viśākhā","Anurādhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Karka","Tulā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Siṃha","Kanyā","Dhanu","Makara"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-East","rahuVasa":"East","anandadiYoga":{"name":"Sushira","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":-23.162529022942152,"eotMinutes":-2.803294500272213,"ayanamsa":24.1044}},"calendars":{"vikram_samvat":2074,"vikram_samvatsara":"Sādhāraṇa","saka_samvat":1939,"saka_samvatsara":"Hemalambī","bengali_samvat":1424,"malayalam_era":1193,"nanakshahi_year":548,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Śukla Pakṣa","solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Śukla Dvādaśī · Vikram 2074 Sādhāraṇa · Śaka 1939 Hemalambī"},"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":"-3137-10-04","event":"Mahābhārata Day 1 (Bhagavad Gītā delivered)","chart_id":"krishna","shared_marker":"same Kṛttikā","url":"/day/-3137-10-04","relevance":0.5},{"historical_date":"-3137-12-25","event":"Bhīṣma's Mahaprasthan","chart_id":"bhishma","shared_marker":"same Kṛttikā","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 30, 2017 CE · Ṛṣikeśa · Vidhyamitra","description":"December 30, 2017 CE for Ṛṣikeśa: Śukla Dvādaśī, sūryodaya 07:13, sūryāsta 17:27.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/2017-12-30","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/2017-12-30","sa":"https://sa.vidhyamitra.com/city/rishikesh/2017-12-30","hi":"https://hi.vidhyamitra.com/city/rishikesh/2017-12-30","x-default":"https://vidhyamitra.com/city/rishikesh/2017-12-30"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T12:28:29.414Z","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":"2026-05-15T12:28:29.414Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T12:28:29.414Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}