{"id":"vidhyamitra:city-day:rishikesh:2131-10-25:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/2131-10-25","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2131-10-25","date_display":"October 25, 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":25,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2499688.770833,"kali_year":5233,"ahargana":1911223.2708,"sun":{"sidereal_longitude":184.4685,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":230.5749,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":46.1064,"elapsed_within_tithi_degrees":10.1064},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2,"moon_longitude":230.5749,"elapsed_within_degrees":3.9083},"yoga":{"number":5,"name":"Śobhana","sum_longitude":55.0435},"karana":{"half_tithi_index":7,"name":"Viṣṭi"},"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":2131,"month":10,"day":25,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2499688.770833,"ahargana":1911223.2708,"kali_year":5233,"ayanamsa_lahiri":25.6943,"grahas":{"sun":{"sidereal_longitude":185.50446399999998,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":227.83446400000003,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1},"retrograde":false,"latitude":1.8014},"mars":{"sidereal_longitude":14.748964,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":207.12006399999996,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":3},"retrograde":true},"jupiter":{"sidereal_longitude":63.508264,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":4},"retrograde":true},"venus":{"sidereal_longitude":210.62336400000004,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":16,"name":"Viśākhā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":199.472664,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":74.1937,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":254.1937,"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":25,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2499688.770833,"kali_year":5233,"ahargana":1911223.2708,"sun":{"sidereal_longitude":184.4685,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":230.5749,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":46.1064,"elapsed_within_tithi_degrees":10.1064},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2,"moon_longitude":230.5749,"elapsed_within_degrees":3.9083},"yoga":{"number":5,"name":"Śobhana","sum_longitude":55.0435},"karana":{"half_tithi_index":7,"name":"Viṣṭi"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":1.801,"elongation":46.106},"lunar":{"type":"lunar","occurs":false,"moon_latitude":1.801,"opposition_distance":133.894}},"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":"06:25","sunsetLocal":"17:37","solarNoonLocal":"12:01","dayLengthHours":11.197801681567066,"dayLengthDisplay":"11 Hours 11 Mins 52 Secs","nightLengthDisplay":"12 Hours 48 Mins 08 Secs","moonriseLocal":"09:42","moonsetLocal":"19:58","rahuKala":{"name":"Rāhu Kāla","start":"13:25","end":"14:49","startHours":13.411304225746452,"endHours":14.811029435942336,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"06:25","end":"07:49","startHours":6.412678174767036,"endHours":7.812403384962919,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:13","end":"10:37","startHours":9.212128595158802,"endHours":10.611853805354686,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:02","end":"09:24","startHours":9.025498567132685,"endHours":9.398758623184921,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:53","end":"07:11","startHours":6.879253244832331,"endHours":7.177861289674119,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:38","end":"12:23","startHours":11.638318959498333,"endHours":12.384839071602803,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:55","end":"05:40","startHours":4.919637950558094,"endHours":5.666158062662565,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:29","end":"06:25","startHours":5.479528034636447,"endHours":6.412678174767036,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:53","end":"14:37","startHours":13.877879295811747,"endHours":14.624399407916219,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:25","end":"17:49","startHours":17.410479856334103,"endHours":17.8104798563341,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:37","end":"18:05","startHours":17.610479856334102,"endHours":18.077054926399395,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:22","end":"19:07","startHours":17.360479856334102,"endHours":19.110479856334102,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:38","end":"00:23","startHours":23.63831895949833,"endHours":24.3848390716028,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"06:25","end":"07:49","startHours":6.412678174767036,"endHours":7.812403384962919,"quality":"auspicious"},{"name":"Roga","start":"07:49","end":"09:13","startHours":7.812403384962919,"endHours":9.212128595158802,"quality":"inauspicious"},{"name":"Udveg","start":"09:13","end":"10:37","startHours":9.212128595158802,"endHours":10.611853805354686,"quality":"inauspicious"},{"name":"Chala","start":"10:37","end":"12:01","startHours":10.611853805354686,"endHours":12.01157901555057,"quality":"neutral"},{"name":"Labha","start":"12:01","end":"13:25","startHours":12.01157901555057,"endHours":13.411304225746452,"quality":"auspicious"},{"name":"Amṛta","start":"13:25","end":"14:49","startHours":13.411304225746452,"endHours":14.811029435942336,"quality":"auspicious"},{"name":"Kāla","start":"14:49","end":"16:13","startHours":14.811029435942336,"endHours":16.21075464613822,"quality":"inauspicious"},{"name":"Śubha","start":"16:13","end":"17:37","startHours":16.21075464613822,"endHours":17.610479856334102,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"17:37","end":"19:13","startHours":17.610479856334102,"endHours":19.21075464613822,"quality":"auspicious"},{"name":"Kāla","start":"19:13","end":"20:49","startHours":19.21075464613822,"endHours":20.811029435942334,"quality":"inauspicious"},{"name":"Śubha","start":"20:49","end":"22:25","startHours":20.811029435942334,"endHours":22.411304225746452,"quality":"auspicious"},{"name":"Roga","start":"22:25","end":"00:01","startHours":22.411304225746452,"endHours":24.01157901555057,"quality":"inauspicious"},{"name":"Udveg","start":"00:01","end":"01:37","startHours":24.01157901555057,"endHours":25.611853805354684,"quality":"inauspicious"},{"name":"Chala","start":"01:37","end":"03:13","startHours":25.611853805354684,"endHours":27.212128595158802,"quality":"neutral"},{"name":"Labha","start":"03:13","end":"04:49","startHours":27.212128595158802,"endHours":28.81240338496292,"quality":"auspicious"},{"name":"Amṛta","start":"04:49","end":"06:25","startHours":28.81240338496292,"endHours":30.412678174767038,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:25","end":"07:25","startHours":6.412678174767036,"endHours":7.412678174767036,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"07:25","end":"08:25","startHours":7.412678174767036,"endHours":8.412678174767036,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"08:25","end":"09:25","startHours":8.412678174767036,"endHours":9.412678174767036,"planetary_lord":"Moon"},{"name":"Hora 4","start":"09:25","end":"10:25","startHours":9.412678174767036,"endHours":10.412678174767036,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"10:25","end":"11:25","startHours":10.412678174767036,"endHours":11.412678174767036,"planetary_lord":"Venus"},{"name":"Hora 6","start":"11:25","end":"12:25","startHours":11.412678174767036,"endHours":12.412678174767036,"planetary_lord":"Sun"},{"name":"Hora 7","start":"12:25","end":"13:25","startHours":12.412678174767036,"endHours":13.412678174767036,"planetary_lord":"Mars"},{"name":"Hora 8","start":"13:25","end":"14:25","startHours":13.412678174767036,"endHours":14.412678174767036,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"14:25","end":"15:25","startHours":14.412678174767036,"endHours":15.412678174767036,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"15:25","end":"16:25","startHours":15.412678174767036,"endHours":16.412678174767038,"planetary_lord":"Moon"},{"name":"Hora 11","start":"16:25","end":"17:25","startHours":16.412678174767038,"endHours":17.412678174767038,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"17:25","end":"18:25","startHours":17.412678174767038,"endHours":18.412678174767038,"planetary_lord":"Venus"},{"name":"Hora 13","start":"18:25","end":"19:25","startHours":18.412678174767038,"endHours":19.412678174767038,"planetary_lord":"Sun"},{"name":"Hora 14","start":"19:25","end":"20:25","startHours":19.412678174767038,"endHours":20.412678174767038,"planetary_lord":"Mars"},{"name":"Hora 15","start":"20:25","end":"21:25","startHours":20.412678174767038,"endHours":21.412678174767038,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"21:25","end":"22:25","startHours":21.412678174767038,"endHours":22.412678174767038,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"22:25","end":"23:25","startHours":22.412678174767038,"endHours":23.412678174767038,"planetary_lord":"Moon"},{"name":"Hora 18","start":"23:25","end":"00:25","startHours":23.412678174767038,"endHours":24.412678174767038,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"00:25","end":"01:25","startHours":24.412678174767038,"endHours":25.412678174767038,"planetary_lord":"Venus"},{"name":"Hora 20","start":"01:25","end":"02:25","startHours":25.412678174767038,"endHours":26.412678174767038,"planetary_lord":"Sun"},{"name":"Hora 21","start":"02:25","end":"03:25","startHours":26.412678174767038,"endHours":27.412678174767038,"planetary_lord":"Mars"},{"name":"Hora 22","start":"03:25","end":"04:25","startHours":27.412678174767038,"endHours":28.412678174767038,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"04:25","end":"05:25","startHours":28.412678174767038,"endHours":29.412678174767038,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"05:25","end":"06:25","startHours":29.412678174767038,"endHours":30.412678174767038,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"unfavorable_nakshatras":["Ārdrā","Punarvasu","Puṣya","Aśleṣā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Vṛścika","Makara"],"unfavorable_rashis":["Mithuna","Karka","Tulā","Dhanu","Kumbha","Mīna"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"North-East","rahuVasa":"North-West","anandadiYoga":{"name":"Dhvānkṣa","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":-11.889731720716982,"eotMinutes":16.234859066965946,"ayanamsa":25.6943}},"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 Caturthī · 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},{"id":"vinayaka-chaturthi","name":"Vināyaka Caturthī (monthly)","name_sanskrit":"विनायक चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Śukla-pakṣa Caturthī; auspicious for new ventures.","vrata":true,"detection":{"tithi_number":4,"tithi_paksha":"Śukla"},"precedence":6}],"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":[{"historical_date":"-3137-10-20","event":"Karṇa-Vadha (Mahābhārata Day 17)","chart_id":"karna","shared_marker":"same Jyeṣṭhā","url":"/day/-3137-10-20","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 25, 2131 CE · Ṛṣikeśa · Vidhyamitra","description":"October 25, 2131 CE for Ṛṣikeśa: Śukla Caturthī, sūryodaya 06:25, sūryāsta 17:37.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/2131-10-25","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/2131-10-25","sa":"https://sa.vidhyamitra.com/city/rishikesh/2131-10-25","hi":"https://hi.vidhyamitra.com/city/rishikesh/2131-10-25","x-default":"https://vidhyamitra.com/city/rishikesh/2131-10-25"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-23T05:28:10.123Z","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":"2026-05-23T05:28:10.123Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-23T05:28:10.123Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}