{"id":"vidhyamitra:city-day:rishikesh:2131-10-29:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/2131-10-29","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2131-10-29","date_display":"October 29, 2131 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":2131,"month":10,"day":29,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2499692.770833,"kali_year":5233,"ahargana":1911227.2708,"sun":{"sidereal_longitude":188.4661,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":279.561,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":91.0949,"elapsed_within_tithi_degrees":7.0949},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4,"moon_longitude":279.561,"elapsed_within_degrees":12.8943},"yoga":{"number":9,"name":"Śūla","sum_longitude":108.027},"karana":{"half_tithi_index":15,"name":"Bava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"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":2131,"month":10,"day":29,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2499692.770833,"ahargana":1911227.2708,"kali_year":5233,"ayanamsa_lahiri":25.6945,"grahas":{"sun":{"sidereal_longitude":189.48931199999993,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false},"moon":{"sidereal_longitude":276.346912,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false,"latitude":-1.9413},"mars":{"sidereal_longitude":13.399712000000022,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":208.36981200000002,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":3},"retrograde":true},"jupiter":{"sidereal_longitude":63.411512000000016,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":4},"retrograde":true},"venus":{"sidereal_longitude":215.54621199999997,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":199.942812,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":73.9817,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":253.9817,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","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":2131,"month":10,"day":29,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2499692.770833,"kali_year":5233,"ahargana":1911227.2708,"sun":{"sidereal_longitude":188.4661,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":279.561,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":91.0949,"elapsed_within_tithi_degrees":7.0949},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4,"moon_longitude":279.561,"elapsed_within_degrees":12.8943},"yoga":{"number":9,"name":"Śūla","sum_longitude":108.027},"karana":{"half_tithi_index":15,"name":"Bava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-1.941,"elongation":91.095},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-1.941,"opposition_distance":88.905}},"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":"06:28","sunsetLocal":"17:33","solarNoonLocal":"12:00","dayLengthHours":11.087618805649814,"dayLengthDisplay":"11 Hours 05 Mins 15 Secs","nightLengthDisplay":"12 Hours 54 Mins 45 Secs","moonriseLocal":"12:33","moonsetLocal":"23:03","rahuKala":{"name":"Rāhu Kāla","start":"07:51","end":"09:14","startHours":7.850413033230932,"endHours":9.236365383937159,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:37","end":"12:00","startHours":10.622317734643387,"endHours":12.008270085349613,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:24","end":"14:47","startHours":13.39422243605584,"endHours":14.780174786762068,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:03","end":"09:25","startHours":9.05157173717633,"endHours":9.42115903069799,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:56","end":"07:13","startHours":6.926444799426782,"endHours":7.22211463424411,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:38","end":"12:23","startHours":11.638682791827952,"endHours":12.377857378871274,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:59","end":"05:44","startHours":4.986111508438064,"endHours":5.725286095481385,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:32","end":"06:28","startHours":5.5404924487205545,"endHours":6.464460682524706,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:51","end":"14:36","startHours":13.856206552957914,"endHours":14.595381140001235,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:21","end":"17:45","startHours":17.35207948817452,"endHours":17.75207948817452,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:33","end":"18:01","startHours":17.55207948817452,"endHours":18.014063605076597,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:18","end":"19:03","startHours":17.30207948817452,"endHours":19.05207948817452,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:38","end":"00:23","startHours":23.638682791827954,"endHours":24.377857378871276,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"06:28","end":"07:51","startHours":6.464460682524706,"endHours":7.850413033230932,"quality":"auspicious"},{"name":"Kāla","start":"07:51","end":"09:14","startHours":7.850413033230932,"endHours":9.236365383937159,"quality":"inauspicious"},{"name":"Śubha","start":"09:14","end":"10:37","startHours":9.236365383937159,"endHours":10.622317734643387,"quality":"auspicious"},{"name":"Roga","start":"10:37","end":"12:00","startHours":10.622317734643387,"endHours":12.008270085349613,"quality":"inauspicious"},{"name":"Udveg","start":"12:00","end":"13:24","startHours":12.008270085349613,"endHours":13.39422243605584,"quality":"inauspicious"},{"name":"Chala","start":"13:24","end":"14:47","startHours":13.39422243605584,"endHours":14.780174786762068,"quality":"neutral"},{"name":"Labha","start":"14:47","end":"16:10","startHours":14.780174786762068,"endHours":16.166127137468294,"quality":"auspicious"},{"name":"Amṛta","start":"16:10","end":"17:33","startHours":16.166127137468294,"endHours":17.55207948817452,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"17:33","end":"19:10","startHours":17.55207948817452,"endHours":19.166127137468294,"quality":"neutral"},{"name":"Labha","start":"19:10","end":"20:47","startHours":19.166127137468294,"endHours":20.780174786762068,"quality":"auspicious"},{"name":"Amṛta","start":"20:47","end":"22:24","startHours":20.780174786762068,"endHours":22.39422243605584,"quality":"auspicious"},{"name":"Kāla","start":"22:24","end":"00:00","startHours":22.39422243605584,"endHours":24.008270085349615,"quality":"inauspicious"},{"name":"Śubha","start":"00:00","end":"01:37","startHours":24.008270085349615,"endHours":25.62231773464339,"quality":"auspicious"},{"name":"Roga","start":"01:37","end":"03:14","startHours":25.62231773464339,"endHours":27.23636538393716,"quality":"inauspicious"},{"name":"Udveg","start":"03:14","end":"04:51","startHours":27.23636538393716,"endHours":28.850413033230932,"quality":"inauspicious"},{"name":"Chala","start":"04:51","end":"06:28","startHours":28.850413033230932,"endHours":30.464460682524706,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"06:28","end":"07:28","startHours":6.464460682524706,"endHours":7.464460682524706,"planetary_lord":"Moon"},{"name":"Hora 2","start":"07:28","end":"08:28","startHours":7.464460682524706,"endHours":8.464460682524706,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"08:28","end":"09:28","startHours":8.464460682524706,"endHours":9.464460682524706,"planetary_lord":"Venus"},{"name":"Hora 4","start":"09:28","end":"10:28","startHours":9.464460682524706,"endHours":10.464460682524706,"planetary_lord":"Sun"},{"name":"Hora 5","start":"10:28","end":"11:28","startHours":10.464460682524706,"endHours":11.464460682524706,"planetary_lord":"Mars"},{"name":"Hora 6","start":"11:28","end":"12:28","startHours":11.464460682524706,"endHours":12.464460682524706,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"12:28","end":"13:28","startHours":12.464460682524706,"endHours":13.464460682524706,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"13:28","end":"14:28","startHours":13.464460682524706,"endHours":14.464460682524706,"planetary_lord":"Moon"},{"name":"Hora 9","start":"14:28","end":"15:28","startHours":14.464460682524706,"endHours":15.464460682524706,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"15:28","end":"16:28","startHours":15.464460682524706,"endHours":16.464460682524706,"planetary_lord":"Venus"},{"name":"Hora 11","start":"16:28","end":"17:28","startHours":16.464460682524706,"endHours":17.464460682524706,"planetary_lord":"Sun"},{"name":"Hora 12","start":"17:28","end":"18:28","startHours":17.464460682524706,"endHours":18.464460682524706,"planetary_lord":"Mars"},{"name":"Hora 13","start":"18:28","end":"19:28","startHours":18.464460682524706,"endHours":19.464460682524706,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"19:28","end":"20:28","startHours":19.464460682524706,"endHours":20.464460682524706,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"20:28","end":"21:28","startHours":20.464460682524706,"endHours":21.464460682524706,"planetary_lord":"Moon"},{"name":"Hora 16","start":"21:28","end":"22:28","startHours":21.464460682524706,"endHours":22.464460682524706,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"22:28","end":"23:28","startHours":22.464460682524706,"endHours":23.464460682524706,"planetary_lord":"Venus"},{"name":"Hora 18","start":"23:28","end":"00:28","startHours":23.464460682524706,"endHours":24.464460682524706,"planetary_lord":"Sun"},{"name":"Hora 19","start":"00:28","end":"01:28","startHours":24.464460682524706,"endHours":25.464460682524706,"planetary_lord":"Mars"},{"name":"Hora 20","start":"01:28","end":"02:28","startHours":25.464460682524706,"endHours":26.464460682524706,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"02:28","end":"03:28","startHours":26.464460682524706,"endHours":27.464460682524706,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"03:28","end":"04:28","startHours":27.464460682524706,"endHours":28.464460682524706,"planetary_lord":"Moon"},{"name":"Hora 23","start":"04:28","end":"05:28","startHours":28.464460682524706,"endHours":29.464460682524706,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"05:28","end":"06:28","startHours":29.464460682524706,"endHours":30.464460682524706,"planetary_lord":"Venus"}],"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":["Mithuna","Karka","Tulā","Vṛścika","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Dhanu","Kumbha"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-East","rahuVasa":"North-East","anandadiYoga":{"name":"Rākṣasa","quality":"Inauspicious"},"drikRitu":"Śarad (Autumn) (Drik)","vedicRitu":"Śarad (Autumn)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-13.24844713438906,"eotMinutes":16.433394879023222,"ayanamsa":25.6945}},"calendars":{"vikram_samvat":2188,"vikram_samvatsara":"Krodhi","saka_samvat":2053,"saka_samvatsara":"Khara","bengali_samvat":1538,"malayalam_era":1307,"nanakshahi_year":662,"lunar_month":"Kārtika","lunar_month_paksha_full":"Kārtika Śukla Pakṣa","solar_month":"Tulā (Aippasi)","ritu":"Śarad (Autumn)","display_summary":"Kārtika Śukla Aṣṭamī · Vikram 2188 Krodhi · Śaka 2053 Khara"},"festivals":[{"id":"tula-sankranti","name":"Tulā Saṅkrānti","name_sanskrit":"तुला सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Libra.","vrata":false,"detection":{"sun_rashi":"Tulā"},"precedence":5}],"todays_walk":{"walk":{"id":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7.","step_count":5,"url":"/walk/chandra-walk"},"reason":"Somavāra (Monday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3137-12-25","event":"Bhīṣma's Mahaprasthan","chart_id":"bhishma","shared_marker":"same Śukla Aṣṭamī","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 October 29, 2131 CE · Ṛṣikeśa · Vidhyamitra","description":"October 29, 2131 CE for Ṛṣikeśa: Śukla Aṣṭamī, sūryodaya 06:28, sūryāsta 17:33.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/2131-10-29","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/2131-10-29","sa":"https://sa.vidhyamitra.com/city/rishikesh/2131-10-29","hi":"https://hi.vidhyamitra.com/city/rishikesh/2131-10-29","x-default":"https://vidhyamitra.com/city/rishikesh/2131-10-29"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-23T09:12:57.794Z","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":"2026-05-23T09:12:57.794Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-23T09:12:57.794Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}