{"id":"vidhyamitra:city-day:rishikesh:2018-09-23:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/2018-09-23","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2018-09-23","date_display":"September 23, 2018 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":2018,"month":9,"day":23,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458384.770833,"kali_year":5120,"ahargana":1869919.2708,"sun":{"sidereal_longitude":155.0783,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":310.6706,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":155.5923,"elapsed_within_tithi_degrees":11.5923},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2,"moon_longitude":310.6706,"elapsed_within_degrees":4.0039},"yoga":{"number":8,"name":"Dhṛti","sum_longitude":105.7489},"karana":{"half_tithi_index":25,"name":"Taitila"},"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":2018,"month":9,"day":23,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2458384.770833,"ahargana":1869919.2708,"kali_year":5120,"ayanamsa_lahiri":24.1146,"grahas":{"sun":{"sidereal_longitude":155.86368100000004,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3},"retrograde":false},"moon":{"sidereal_longitude":312.169581,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2},"retrograde":false,"latitude":-2.1104},"mars":{"sidereal_longitude":278.719381,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":157.19248100000004,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":206.43968099999995,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":193.697681,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":248.54108099999996,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":102.6783,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":282.6783,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"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":2018,"month":9,"day":23,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458384.770833,"kali_year":5120,"ahargana":1869919.2708,"sun":{"sidereal_longitude":155.0783,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":310.6706,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":155.5923,"elapsed_within_tithi_degrees":11.5923},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2,"moon_longitude":310.6706,"elapsed_within_degrees":4.0039},"yoga":{"number":8,"name":"Dhṛti","sum_longitude":105.7489},"karana":{"half_tithi_index":25,"name":"Taitila"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.11,"elongation":155.592},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.11,"opposition_distance":24.408}},"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":"06:05","sunsetLocal":"18:12","solarNoonLocal":"12:08","dayLengthHours":12.129030214568111,"dayLengthDisplay":"12 Hours 07 Mins 45 Secs","nightLengthDisplay":"11 Hours 52 Mins 15 Secs","moonriseLocal":"16:53","moonsetLocal":"04:15","rahuKala":{"name":"Rāhu Kāla","start":"16:41","end":"18:12","startHours":16.68994576380029,"endHours":18.2060745406213,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:08","end":"13:39","startHours":12.141559433337246,"endHours":13.657688210158259,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:10","end":"16:41","startHours":15.173816986979272,"endHours":16.68994576380029,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:54","end":"09:19","startHours":8.907151376119081,"endHours":9.311452383271352,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:35","end":"06:54","startHours":6.582420584993527,"endHours":6.905861390715343,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:44","end":"12:33","startHours":11.737258426184976,"endHours":12.545860440489516,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:28","end":"05:16","startHours":4.459840297444108,"endHours":5.2684423117486485,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:04","end":"06:05","startHours":5.0662918081725135,"endHours":6.07704432605319,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:10","end":"14:58","startHours":14.163064469098597,"endHours":14.971666483403137,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:00","end":"18:24","startHours":18.006074540621302,"endHours":18.4060745406213,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:12","end":"18:43","startHours":18.2060745406213,"endHours":18.71145079956164,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:57","end":"19:42","startHours":17.9560745406213,"endHours":19.7060745406213,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:44","end":"00:33","startHours":23.737258426184976,"endHours":24.545860440489516,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:05","end":"07:36","startHours":6.07704432605319,"endHours":7.5931731028742036,"quality":"inauspicious"},{"name":"Chala","start":"07:36","end":"09:07","startHours":7.5931731028742036,"endHours":9.109301879695217,"quality":"neutral"},{"name":"Labha","start":"09:07","end":"10:38","startHours":9.109301879695217,"endHours":10.625430656516231,"quality":"auspicious"},{"name":"Amṛta","start":"10:38","end":"12:08","startHours":10.625430656516231,"endHours":12.141559433337246,"quality":"auspicious"},{"name":"Kāla","start":"12:08","end":"13:39","startHours":12.141559433337246,"endHours":13.657688210158259,"quality":"inauspicious"},{"name":"Śubha","start":"13:39","end":"15:10","startHours":13.657688210158259,"endHours":15.173816986979272,"quality":"auspicious"},{"name":"Roga","start":"15:10","end":"16:41","startHours":15.173816986979272,"endHours":16.68994576380029,"quality":"inauspicious"},{"name":"Udveg","start":"16:41","end":"18:12","startHours":16.68994576380029,"endHours":18.2060745406213,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:12","end":"19:41","startHours":18.2060745406213,"endHours":19.68994576380029,"quality":"auspicious"},{"name":"Roga","start":"19:41","end":"21:10","startHours":19.68994576380029,"endHours":21.173816986979276,"quality":"inauspicious"},{"name":"Udveg","start":"21:10","end":"22:39","startHours":21.173816986979276,"endHours":22.65768821015826,"quality":"inauspicious"},{"name":"Chala","start":"22:39","end":"00:08","startHours":22.65768821015826,"endHours":24.141559433337246,"quality":"neutral"},{"name":"Labha","start":"00:08","end":"01:38","startHours":24.141559433337246,"endHours":25.625430656516233,"quality":"auspicious"},{"name":"Amṛta","start":"01:38","end":"03:07","startHours":25.625430656516233,"endHours":27.109301879695217,"quality":"auspicious"},{"name":"Kāla","start":"03:07","end":"04:36","startHours":27.109301879695217,"endHours":28.593173102874204,"quality":"inauspicious"},{"name":"Śubha","start":"04:36","end":"06:05","startHours":28.593173102874204,"endHours":30.07704432605319,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:05","end":"07:05","startHours":6.07704432605319,"endHours":7.07704432605319,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:05","end":"08:05","startHours":7.07704432605319,"endHours":8.07704432605319,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:05","end":"09:05","startHours":8.07704432605319,"endHours":9.07704432605319,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:05","end":"10:05","startHours":9.07704432605319,"endHours":10.07704432605319,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:05","end":"11:05","startHours":10.07704432605319,"endHours":11.07704432605319,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:05","end":"12:05","startHours":11.07704432605319,"endHours":12.07704432605319,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:05","end":"13:05","startHours":12.07704432605319,"endHours":13.07704432605319,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:05","end":"14:05","startHours":13.07704432605319,"endHours":14.07704432605319,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:05","end":"15:05","startHours":14.07704432605319,"endHours":15.07704432605319,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:05","end":"16:05","startHours":15.07704432605319,"endHours":16.07704432605319,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:05","end":"17:05","startHours":16.07704432605319,"endHours":17.07704432605319,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:05","end":"18:05","startHours":17.07704432605319,"endHours":18.07704432605319,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:05","end":"19:05","startHours":18.07704432605319,"endHours":19.07704432605319,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:05","end":"20:05","startHours":19.07704432605319,"endHours":20.07704432605319,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:05","end":"21:05","startHours":20.07704432605319,"endHours":21.07704432605319,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:05","end":"22:05","startHours":21.07704432605319,"endHours":22.07704432605319,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:05","end":"23:05","startHours":22.07704432605319,"endHours":23.07704432605319,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:05","end":"00:05","startHours":23.07704432605319,"endHours":24.07704432605319,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:05","end":"01:05","startHours":24.07704432605319,"endHours":25.07704432605319,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:05","end":"02:05","startHours":25.07704432605319,"endHours":26.07704432605319,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:05","end":"03:05","startHours":26.07704432605319,"endHours":27.07704432605319,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:05","end":"04:05","startHours":27.07704432605319,"endHours":28.07704432605319,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:05","end":"05:05","startHours":28.07704432605319,"endHours":29.07704432605319,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:05","end":"06:05","startHours":29.07704432605319,"endHours":30.07704432605319,"planetary_lord":"Jupiter"}],"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","Karka","Siṃha","Vṛścika","Dhanu","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Makara","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"South","rahuVasa":"North-East","anandadiYoga":{"name":"Mātaṇga","quality":"Auspicious"},"drikRitu":"Varṣā (Monsoon)","vedicRitu":"Varṣā (Monsoon)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":0.008638351149909112,"eotMinutes":8.436033999765183,"ayanamsa":24.1146}},"calendars":{"vikram_samvat":2075,"vikram_samvatsara":"Virodhakṛt","saka_samvat":1940,"saka_samvatsara":"Vilambī","bengali_samvat":1425,"malayalam_era":1194,"nanakshahi_year":549,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Śukla Pakṣa","solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Śukla Trayodaśī · Vikram 2075 Virodhakṛt · Śaka 1940 Vilambī"},"festivals":[{"id":"kanya-sankranti","name":"Kanyā Saṅkrānti (Mahālaya begins)","name_sanskrit":"कन्या सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Virgo; Mahālaya / Pitṛ-Pakṣa solar marker.","vrata":false,"detection":{"sun_rashi":"Kanyā"},"precedence":4},{"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":"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 September 23, 2018 CE · Ṛṣikeśa · Vidhyamitra","description":"September 23, 2018 CE for Ṛṣikeśa: Śukla Trayodaśī, sūryodaya 06:05, sūryāsta 18:12.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/2018-09-23","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/2018-09-23","sa":"https://sa.vidhyamitra.com/city/rishikesh/2018-09-23","hi":"https://hi.vidhyamitra.com/city/rishikesh/2018-09-23","x-default":"https://vidhyamitra.com/city/rishikesh/2018-09-23"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T20:59:58.723Z","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":"2026-05-15T20:59:58.723Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T20:59:58.723Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}