{"id":"vidhyamitra:city-day:rishikesh:2030-01-17:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/2030-01-17","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2030-01-17","date_display":"January 17, 2030 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":2030,"month":1,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2462518.770833,"kali_year":5131,"ahargana":1874053.2708,"sun":{"sidereal_longitude":272.5124,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":61.059,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":148.5466,"elapsed_within_tithi_degrees":4.5466},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":3,"moon_longitude":61.059,"elapsed_within_degrees":7.7257},"yoga":{"number":26,"name":"Indra","sum_longitude":333.5714},"karana":{"half_tithi_index":24,"name":"Kaulava"},"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":2030,"month":1,"day":17,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2462518.770833,"ahargana":1874053.2708,"kali_year":5131,"ayanamsa_lahiri":24.2727,"grahas":{"sun":{"sidereal_longitude":272.68073200000003,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":62.23903200000001,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":3},"retrograde":false,"latitude":0.2024},"mars":{"sidereal_longitude":302.64263200000005,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":248.707132,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":208.98533199999997,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":255.77073199999995,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":23.736231999999973,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":243.6391,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":63.6391,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","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":2030,"month":1,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2462518.770833,"kali_year":5131,"ahargana":1874053.2708,"sun":{"sidereal_longitude":272.5124,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":61.059,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":148.5466,"elapsed_within_tithi_degrees":4.5466},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":3,"moon_longitude":61.059,"elapsed_within_degrees":7.7257},"yoga":{"number":26,"name":"Indra","sum_longitude":333.5714},"karana":{"half_tithi_index":24,"name":"Kaulava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":0.202,"elongation":148.547},"lunar":{"type":"lunar","occurs":false,"moon_latitude":0.202,"opposition_distance":31.453}},"eclipse_window_40days":[{"offset_days":-13,"type":"solar","occurs":true,"moon_latitude":1.192,"elongation":0.543}]},"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":"17:40","solarNoonLocal":"12:27","dayLengthHours":10.448444423809327,"dayLengthDisplay":"10 Hours 26 Mins 54 Secs","nightLengthDisplay":"13 Hours 33 Mins 06 Secs","moonriseLocal":"15:24","moonsetLocal":"05:26","rahuKala":{"name":"Rāhu Kāla","start":"13:45","end":"15:04","startHours":13.755317032077976,"endHours":15.061372585054142,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:14","end":"08:32","startHours":7.225039267197147,"endHours":8.531094820173312,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:50","end":"11:09","startHours":9.837150373149479,"endHours":11.143205926125646,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:40","end":"10:01","startHours":9.663009632752656,"endHours":10.011291113546301,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:40","end":"07:56","startHours":7.660391118189202,"endHours":7.939016302824117,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:06","end":"12:48","startHours":12.100979998308166,"endHours":12.797542959895456,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:50","end":"06:32","startHours":5.83191334402257,"endHours":6.528476305609859,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:21","end":"07:14","startHours":6.354335565213036,"endHours":7.225039267197147,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:11","end":"14:53","startHours":14.190668883070032,"endHours":14.88723184465732,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:28","end":"17:52","startHours":17.473483691006475,"endHours":17.873483691006474,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:40","end":"18:07","startHours":17.673483691006474,"endHours":18.10883554199853,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:25","end":"19:10","startHours":17.423483691006474,"endHours":19.173483691006474,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:06","end":"00:48","startHours":24.100979998308166,"endHours":24.797542959895456,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"07:14","end":"08:32","startHours":7.225039267197147,"endHours":8.531094820173312,"quality":"auspicious"},{"name":"Roga","start":"08:32","end":"09:50","startHours":8.531094820173312,"endHours":9.837150373149479,"quality":"inauspicious"},{"name":"Udveg","start":"09:50","end":"11:09","startHours":9.837150373149479,"endHours":11.143205926125646,"quality":"inauspicious"},{"name":"Chala","start":"11:09","end":"12:27","startHours":11.143205926125646,"endHours":12.44926147910181,"quality":"neutral"},{"name":"Labha","start":"12:27","end":"13:45","startHours":12.44926147910181,"endHours":13.755317032077976,"quality":"auspicious"},{"name":"Amṛta","start":"13:45","end":"15:04","startHours":13.755317032077976,"endHours":15.061372585054142,"quality":"auspicious"},{"name":"Kāla","start":"15:04","end":"16:22","startHours":15.061372585054142,"endHours":16.36742813803031,"quality":"inauspicious"},{"name":"Śubha","start":"16:22","end":"17:40","startHours":16.36742813803031,"endHours":17.673483691006474,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"17:40","end":"19:22","startHours":17.673483691006474,"endHours":19.36742813803031,"quality":"auspicious"},{"name":"Kāla","start":"19:22","end":"21:04","startHours":19.36742813803031,"endHours":21.061372585054144,"quality":"inauspicious"},{"name":"Śubha","start":"21:04","end":"22:45","startHours":21.061372585054144,"endHours":22.755317032077976,"quality":"auspicious"},{"name":"Roga","start":"22:45","end":"00:27","startHours":22.755317032077976,"endHours":24.44926147910181,"quality":"inauspicious"},{"name":"Udveg","start":"00:27","end":"02:09","startHours":24.44926147910181,"endHours":26.143205926125646,"quality":"inauspicious"},{"name":"Chala","start":"02:09","end":"03:50","startHours":26.143205926125646,"endHours":27.837150373149477,"quality":"neutral"},{"name":"Labha","start":"03:50","end":"05:32","startHours":27.837150373149477,"endHours":29.531094820173312,"quality":"auspicious"},{"name":"Amṛta","start":"05:32","end":"07:14","startHours":29.531094820173312,"endHours":31.225039267197147,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:14","end":"08:14","startHours":7.225039267197147,"endHours":8.225039267197147,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"08:14","end":"09:14","startHours":8.225039267197147,"endHours":9.225039267197147,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"09:14","end":"10:14","startHours":9.225039267197147,"endHours":10.225039267197147,"planetary_lord":"Moon"},{"name":"Hora 4","start":"10:14","end":"11:14","startHours":10.225039267197147,"endHours":11.225039267197147,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"11:14","end":"12:14","startHours":11.225039267197147,"endHours":12.225039267197147,"planetary_lord":"Venus"},{"name":"Hora 6","start":"12:14","end":"13:14","startHours":12.225039267197147,"endHours":13.225039267197147,"planetary_lord":"Sun"},{"name":"Hora 7","start":"13:14","end":"14:14","startHours":13.225039267197147,"endHours":14.225039267197147,"planetary_lord":"Mars"},{"name":"Hora 8","start":"14:14","end":"15:14","startHours":14.225039267197147,"endHours":15.225039267197147,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"15:14","end":"16:14","startHours":15.225039267197147,"endHours":16.225039267197147,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"16:14","end":"17:14","startHours":16.225039267197147,"endHours":17.225039267197147,"planetary_lord":"Moon"},{"name":"Hora 11","start":"17:14","end":"18:14","startHours":17.225039267197147,"endHours":18.225039267197147,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"18:14","end":"19:14","startHours":18.225039267197147,"endHours":19.225039267197147,"planetary_lord":"Venus"},{"name":"Hora 13","start":"19:14","end":"20:14","startHours":19.225039267197147,"endHours":20.225039267197147,"planetary_lord":"Sun"},{"name":"Hora 14","start":"20:14","end":"21:14","startHours":20.225039267197147,"endHours":21.225039267197147,"planetary_lord":"Mars"},{"name":"Hora 15","start":"21:14","end":"22:14","startHours":21.225039267197147,"endHours":22.225039267197147,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"22:14","end":"23:14","startHours":22.225039267197147,"endHours":23.225039267197147,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"23:14","end":"00:14","startHours":23.225039267197147,"endHours":24.225039267197147,"planetary_lord":"Moon"},{"name":"Hora 18","start":"00:14","end":"01:14","startHours":24.225039267197147,"endHours":25.225039267197147,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"01:14","end":"02:14","startHours":25.225039267197147,"endHours":26.225039267197147,"planetary_lord":"Venus"},{"name":"Hora 20","start":"02:14","end":"03:14","startHours":26.225039267197147,"endHours":27.225039267197147,"planetary_lord":"Sun"},{"name":"Hora 21","start":"03:14","end":"04:14","startHours":27.225039267197147,"endHours":28.225039267197147,"planetary_lord":"Mars"},{"name":"Hora 22","start":"04:14","end":"05:14","startHours":28.225039267197147,"endHours":29.225039267197147,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"05:14","end":"06:14","startHours":29.225039267197147,"endHours":30.225039267197147,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"06:14","end":"07:14","startHours":30.225039267197147,"endHours":31.225039267197147,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Maghā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"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":"South (Dakṣiṇa)","chandraVasa":"South","rahuVasa":"North-West","anandadiYoga":{"name":"Amṛta","quality":"Auspicious"},"drikRitu":"Hemanta (Pre-winter)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-20.76457200915998,"eotMinutes":-10.026088746108654,"ayanamsa":24.2727}},"calendars":{"vikram_samvat":2087,"vikram_samvatsara":"Rudhirodgāri","saka_samvat":1952,"saka_samvatsara":"Sādhāraṇa","bengali_samvat":1437,"malayalam_era":1206,"nanakshahi_year":561,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Trayodaśī · Vikram 2087 Rudhirodgāri · Śaka 1952 Sādhāraṇa"},"festivals":[{"id":"makara-sankranti","name":"Makara Saṅkrānti (Uttarāyaṇa)","name_sanskrit":"मकर सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Capricorn; Uttarāyaṇa (north-going) begins. Bhīṣma's chosen mahaprasthāna time.","vrata":true,"detection":{"sun_rashi":"Makara"},"precedence":1,"sources":["Mahābhārata Bhīṣma-Stuti","Sūrya-Siddhānta"]},{"id":"pongal","name":"Pongal / Thai Pongal","name_sanskrit":"पोङ्गल","tradition":"Regional","associated_deity":"Sūrya Bhagavān","significance":"Tamil 4-day harvest festival; coincides with Makara Saṅkrānti.","vrata":false,"detection":{"sun_rashi":"Makara"},"precedence":2},{"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":"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":[]},"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 17, 2030 CE · Ṛṣikeśa · Vidhyamitra","description":"January 17, 2030 CE for Ṛṣikeśa: Śukla Trayodaśī, sūryodaya 07:14, sūryāsta 17:40.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/2030-01-17","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/2030-01-17","sa":"https://sa.vidhyamitra.com/city/rishikesh/2030-01-17","hi":"https://hi.vidhyamitra.com/city/rishikesh/2030-01-17","x-default":"https://vidhyamitra.com/city/rishikesh/2030-01-17"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T09:42:03.519Z","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":"2026-05-15T09:42:03.519Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T09:42:03.519Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}