{"id":"vidhyamitra:city-day:rishikesh:1999-10-20:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1999-10-20","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1999-10-20","date_display":"October 20, 1999 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":1999,"month":10,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2451471.770833,"kali_year":5101,"ahargana":1863006.2708,"sun":{"sidereal_longitude":181.6329,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":301.2376,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":119.6047,"elapsed_within_tithi_degrees":11.6047},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3,"moon_longitude":301.2376,"elapsed_within_degrees":7.9043},"yoga":{"number":10,"name":"Gaṇḍa","sum_longitude":122.8706},"karana":{"half_tithi_index":19,"name":"Gara"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"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":1999,"month":10,"day":20,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2451471.770833,"ahargana":1863006.2708,"kali_year":5101,"ayanamsa_lahiri":23.8502,"grahas":{"sun":{"sidereal_longitude":182.35740799999996,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":299.873208,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false,"latitude":-0.9558},"mars":{"sidereal_longitude":248.302508,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":206.10030800000004,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":6.589808000000005,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":true},"venus":{"sidereal_longitude":136.31770799999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":21.141908,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":3},"retrograde":true},"rahu":{"sidereal_longitude":108.9624,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":288.9624,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","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":1999,"month":10,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2451471.770833,"kali_year":5101,"ahargana":1863006.2708,"sun":{"sidereal_longitude":181.6329,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":301.2376,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":119.6047,"elapsed_within_tithi_degrees":11.6047},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3,"moon_longitude":301.2376,"elapsed_within_degrees":7.9043},"yoga":{"number":10,"name":"Gaṇḍa","sum_longitude":122.8706},"karana":{"half_tithi_index":19,"name":"Gara"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.956,"elongation":119.605},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.956,"opposition_distance":60.395}},"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":"06:21","sunsetLocal":"17:41","solarNoonLocal":"12:01","dayLengthHours":11.339847690340095,"dayLengthDisplay":"11 Hours 20 Mins 23 Secs","nightLengthDisplay":"12 Hours 39 Mins 37 Secs","moonriseLocal":"14:21","moonsetLocal":"01:22","rahuKala":{"name":"Rāhu Kāla","start":"12:01","end":"13:26","startHours":12.020545479262815,"endHours":13.438026440555326,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:46","end":"09:11","startHours":7.768102595385278,"endHours":9.18558355667779,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:36","end":"12:01","startHours":10.603064517970303,"endHours":12.020545479262815,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:00","end":"09:22","startHours":8.996586095172121,"endHours":9.37458101818346,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:49","end":"07:08","startHours":6.823115287856937,"endHours":7.125511226266006,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:39","end":"12:24","startHours":11.642550556251479,"endHours":12.39854040227415,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:50","end":"05:36","startHours":4.8386419420474205,"endHours":5.594631788070093,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:24","end":"06:21","startHours":5.405634326564424,"endHours":6.350621634092766,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:55","end":"14:40","startHours":13.910520094319496,"endHours":14.66650994034217,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:29","end":"17:53","startHours":17.490469324432862,"endHours":17.89046932443286,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:41","end":"18:10","startHours":17.69046932443286,"endHours":18.162962978197033,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:26","end":"19:11","startHours":17.44046932443286,"endHours":19.19046932443286,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:39","end":"00:24","startHours":23.64255055625148,"endHours":24.39854040227415,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"06:21","end":"07:46","startHours":6.350621634092766,"endHours":7.768102595385278,"quality":"auspicious"},{"name":"Amṛta","start":"07:46","end":"09:11","startHours":7.768102595385278,"endHours":9.18558355667779,"quality":"auspicious"},{"name":"Kāla","start":"09:11","end":"10:36","startHours":9.18558355667779,"endHours":10.603064517970303,"quality":"inauspicious"},{"name":"Śubha","start":"10:36","end":"12:01","startHours":10.603064517970303,"endHours":12.020545479262815,"quality":"auspicious"},{"name":"Roga","start":"12:01","end":"13:26","startHours":12.020545479262815,"endHours":13.438026440555326,"quality":"inauspicious"},{"name":"Udveg","start":"13:26","end":"14:51","startHours":13.438026440555326,"endHours":14.855507401847838,"quality":"inauspicious"},{"name":"Chala","start":"14:51","end":"16:16","startHours":14.855507401847838,"endHours":16.27298836314035,"quality":"neutral"},{"name":"Labha","start":"16:16","end":"17:41","startHours":16.27298836314035,"endHours":17.69046932443286,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"17:41","end":"19:16","startHours":17.69046932443286,"endHours":19.27298836314035,"quality":"inauspicious"},{"name":"Chala","start":"19:16","end":"20:51","startHours":19.27298836314035,"endHours":20.855507401847838,"quality":"neutral"},{"name":"Labha","start":"20:51","end":"22:26","startHours":20.855507401847838,"endHours":22.438026440555326,"quality":"auspicious"},{"name":"Amṛta","start":"22:26","end":"00:01","startHours":22.438026440555326,"endHours":24.020545479262815,"quality":"auspicious"},{"name":"Kāla","start":"00:01","end":"01:36","startHours":24.020545479262815,"endHours":25.603064517970303,"quality":"inauspicious"},{"name":"Śubha","start":"01:36","end":"03:11","startHours":25.603064517970303,"endHours":27.18558355667779,"quality":"auspicious"},{"name":"Roga","start":"03:11","end":"04:46","startHours":27.18558355667779,"endHours":28.76810259538528,"quality":"inauspicious"},{"name":"Udveg","start":"04:46","end":"06:21","startHours":28.76810259538528,"endHours":30.350621634092768,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:21","end":"07:21","startHours":6.350621634092766,"endHours":7.350621634092766,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"07:21","end":"08:21","startHours":7.350621634092766,"endHours":8.350621634092766,"planetary_lord":"Venus"},{"name":"Hora 3","start":"08:21","end":"09:21","startHours":8.350621634092766,"endHours":9.350621634092766,"planetary_lord":"Sun"},{"name":"Hora 4","start":"09:21","end":"10:21","startHours":9.350621634092766,"endHours":10.350621634092766,"planetary_lord":"Mars"},{"name":"Hora 5","start":"10:21","end":"11:21","startHours":10.350621634092766,"endHours":11.350621634092766,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"11:21","end":"12:21","startHours":11.350621634092766,"endHours":12.350621634092766,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"12:21","end":"13:21","startHours":12.350621634092766,"endHours":13.350621634092766,"planetary_lord":"Moon"},{"name":"Hora 8","start":"13:21","end":"14:21","startHours":13.350621634092766,"endHours":14.350621634092766,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"14:21","end":"15:21","startHours":14.350621634092766,"endHours":15.350621634092766,"planetary_lord":"Venus"},{"name":"Hora 10","start":"15:21","end":"16:21","startHours":15.350621634092766,"endHours":16.350621634092768,"planetary_lord":"Sun"},{"name":"Hora 11","start":"16:21","end":"17:21","startHours":16.350621634092768,"endHours":17.350621634092768,"planetary_lord":"Mars"},{"name":"Hora 12","start":"17:21","end":"18:21","startHours":17.350621634092768,"endHours":18.350621634092768,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"18:21","end":"19:21","startHours":18.350621634092768,"endHours":19.350621634092768,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"19:21","end":"20:21","startHours":19.350621634092768,"endHours":20.350621634092768,"planetary_lord":"Moon"},{"name":"Hora 15","start":"20:21","end":"21:21","startHours":20.350621634092768,"endHours":21.350621634092768,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"21:21","end":"22:21","startHours":21.350621634092768,"endHours":22.350621634092768,"planetary_lord":"Venus"},{"name":"Hora 17","start":"22:21","end":"23:21","startHours":22.350621634092768,"endHours":23.350621634092768,"planetary_lord":"Sun"},{"name":"Hora 18","start":"23:21","end":"00:21","startHours":23.350621634092768,"endHours":24.350621634092768,"planetary_lord":"Mars"},{"name":"Hora 19","start":"00:21","end":"01:21","startHours":24.350621634092768,"endHours":25.350621634092768,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"01:21","end":"02:21","startHours":25.350621634092768,"endHours":26.350621634092768,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"02:21","end":"03:21","startHours":26.350621634092768,"endHours":27.350621634092768,"planetary_lord":"Moon"},{"name":"Hora 22","start":"03:21","end":"04:21","startHours":27.350621634092768,"endHours":28.350621634092768,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"04:21","end":"05:21","startHours":28.350621634092768,"endHours":29.350621634092768,"planetary_lord":"Venus"},{"name":"Hora 24","start":"05:21","end":"06:21","startHours":29.350621634092768,"endHours":30.350621634092768,"planetary_lord":"Sun"}],"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":["Mithuna","Karka","Tulā","Vṛścika","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Dhanu","Kumbha"]},"dishaShool":"North (Uttara)","chandraVasa":"South-East","rahuVasa":"South-West","anandadiYoga":{"name":"Dhvaja","quality":"Auspicious"},"tropicalRitu":"Śarad (Autumn)","vedicRitu":"Śarad (Autumn)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-10.116404505490387,"eotMinutes":15.696871244231174,"ayanamsa":23.8502}},"calendars":{"vikram_samvat":2056,"vikram_samvatsara":"Nandana","saka_samvat":1921,"saka_samvatsara":"Pramāthi","bengali_samvat":1406,"malayalam_era":1175,"nanakshahi_year":530,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Āśvina","lunar_month_amanta":"Āśvina","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Tulā (Aippasi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Śukla Daśamī · Vikram 2056 Nandana · Śaka 1921 Pramāthi"},"festivals":[{"id":"vijaya-dashami","name":"Vijaya Daśamī (Dasarā / Daśaharā)","name_sanskrit":"विजय दशमी","tradition":"Pan-Hindu","associated_deity":"Rāma (Rāvaṇa-vadha) + Durgā (Mahiṣāsura-vadha)","significance":"Rāma's victory over Rāvaṇa; Durgā's victory; ārambha-divasa for śilpa-kalā.","vrata":true,"primary_observance":"Rāvaṇa-dahana; Aparājitā-pūjā; Śastra-pūjā","detection":{"tithi_number":10,"tithi_paksha":"Śukla","lunar_month":"Āśvina"},"precedence":1,"related_chart":"rama","sources":["Vālmīki Rāmāyaṇa, Yuddha-Kāṇḍa","Devī Mahātmya"]}],"todays_walk":{"walk":{"id":"budha-walk","name":"Budha Walk","name_sanskrit":"बुध यात्रा","type":"graha","description":"Discrimination + BG 2.41 (vyavasāyātmikā buddhi).","step_count":6,"url":"/walk/budha-walk"},"reason":"Budhavāra (Wednesday) — 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 October 20, 1999 CE · Ṛṣikeśa · Vidhyamitra","description":"October 20, 1999 CE for Ṛṣikeśa: Śukla Daśamī, sūryodaya 06:21, sūryāsta 17:41.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1999-10-20","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1999-10-20","sa":"https://sa.vidhyamitra.com/city/rishikesh/1999-10-20","hi":"https://hi.vidhyamitra.com/city/rishikesh/1999-10-20","x-default":"https://vidhyamitra.com/city/rishikesh/1999-10-20"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T16:19:13.898Z","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":"2026-05-31T16:19:13.898Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T16:19:13.898Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}