{"id":"vidhyamitra:city-day:rishikesh:1871-12-10:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1871-12-10","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1871-12-10","date_display":"December 10, 1871 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":1871,"month":12,"day":10,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2404771.770833,"kali_year":4973,"ahargana":1816306.2708,"sun":{"sidereal_longitude":235.41,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":206.667,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":331.257,"elapsed_within_tithi_degrees":7.257},"nakshatra":{"number":16,"name":"Viśākhā","pada":3,"moon_longitude":206.667,"elapsed_within_degrees":6.667},"yoga":{"number":7,"name":"Sukarma","sum_longitude":82.077},"karana":{"half_tithi_index":55,"name":"Vaṇija"},"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":1871,"month":12,"day":10,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2404771.770833,"ahargana":1816306.2708,"kali_year":4973,"ayanamsa_lahiri":22.0641,"grahas":{"sun":{"sidereal_longitude":235.52159200000006,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":205.732892,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":2},"retrograde":false,"latitude":2.6867},"mars":{"sidereal_longitude":274.673092,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":256.60139200000003,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":98.21029199999998,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":true},"venus":{"sidereal_longitude":190.52169200000003,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":258.41509199999996,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":63.3531,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":243.3531,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"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":1871,"month":12,"day":10,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2404771.770833,"kali_year":4973,"ahargana":1816306.2708,"sun":{"sidereal_longitude":235.41,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":206.667,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":331.257,"elapsed_within_tithi_degrees":7.257},"nakshatra":{"number":16,"name":"Viśākhā","pada":3,"moon_longitude":206.667,"elapsed_within_degrees":6.667},"yoga":{"number":7,"name":"Sukarma","sum_longitude":82.077},"karana":{"half_tithi_index":55,"name":"Vaṇija"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.687,"elongation":28.743},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.687,"opposition_distance":151.257}},"eclipse_window_40days":[{"offset_days":2,"type":"solar","occurs":true,"moon_latitude":0.634,"elongation":2.327},{"offset_days":17,"type":"lunar","occurs":true,"moon_latitude":1.007,"opposition_distance":2.532}]},"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":"07:03","sunsetLocal":"17:18","solarNoonLocal":"12:10","dayLengthHours":10.258506251005752,"dayLengthDisplay":"10 Hours 15 Mins 31 Secs","nightLengthDisplay":"13 Hours 44 Mins 29 Secs","moonriseLocal":"04:50","moonsetLocal":"15:33","rahuKala":{"name":"Rāhu Kāla","start":"16:01","end":"17:18","startHours":16.021932978489573,"endHours":17.30424625986529,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:10","end":"13:27","startHours":12.174993134362417,"endHours":13.457306415738135,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"14:44","end":"16:01","startHours":14.739619697113854,"endHours":16.021932978489573,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:26","end":"09:47","startHours":9.439391467427548,"endHours":9.781341675794408,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:28","end":"07:45","startHours":7.473177769318113,"endHours":7.746737936011599,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:50","end":"12:31","startHours":11.833042925995557,"endHours":12.516943342729274,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:41","end":"06:22","startHours":5.6779391753921065,"endHours":6.361839592125824,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:11","end":"07:03","startHours":6.190864487942394,"endHours":7.04574000885954,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:53","end":"14:34","startHours":13.884744176196708,"endHours":14.568644592930426,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:06","end":"17:30","startHours":17.104246259865292,"endHours":17.50424625986529,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:18","end":"17:44","startHours":17.30424625986529,"endHours":17.731684020323865,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:03","end":"18:48","startHours":17.05424625986529,"endHours":18.80424625986529,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:50","end":"00:31","startHours":23.83304292599556,"endHours":24.516943342729274,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"07:03","end":"08:20","startHours":7.04574000885954,"endHours":8.328053290235259,"quality":"inauspicious"},{"name":"Chala","start":"08:20","end":"09:37","startHours":8.328053290235259,"endHours":9.610366571610978,"quality":"neutral"},{"name":"Labha","start":"09:37","end":"10:54","startHours":9.610366571610978,"endHours":10.892679852986697,"quality":"auspicious"},{"name":"Amṛta","start":"10:54","end":"12:10","startHours":10.892679852986697,"endHours":12.174993134362417,"quality":"auspicious"},{"name":"Kāla","start":"12:10","end":"13:27","startHours":12.174993134362417,"endHours":13.457306415738135,"quality":"inauspicious"},{"name":"Śubha","start":"13:27","end":"14:44","startHours":13.457306415738135,"endHours":14.739619697113854,"quality":"auspicious"},{"name":"Roga","start":"14:44","end":"16:01","startHours":14.739619697113854,"endHours":16.021932978489573,"quality":"inauspicious"},{"name":"Udveg","start":"16:01","end":"17:18","startHours":16.021932978489573,"endHours":17.30424625986529,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"17:18","end":"19:01","startHours":17.30424625986529,"endHours":19.021932978489573,"quality":"auspicious"},{"name":"Roga","start":"19:01","end":"20:44","startHours":19.021932978489573,"endHours":20.739619697113852,"quality":"inauspicious"},{"name":"Udveg","start":"20:44","end":"22:27","startHours":20.739619697113852,"endHours":22.457306415738135,"quality":"inauspicious"},{"name":"Chala","start":"22:27","end":"00:10","startHours":22.457306415738135,"endHours":24.174993134362417,"quality":"neutral"},{"name":"Labha","start":"00:10","end":"01:54","startHours":24.174993134362417,"endHours":25.892679852986696,"quality":"auspicious"},{"name":"Amṛta","start":"01:54","end":"03:37","startHours":25.892679852986696,"endHours":27.610366571610978,"quality":"auspicious"},{"name":"Kāla","start":"03:37","end":"05:20","startHours":27.610366571610978,"endHours":29.32805329023526,"quality":"inauspicious"},{"name":"Śubha","start":"05:20","end":"07:03","startHours":29.32805329023526,"endHours":31.04574000885954,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:03","end":"08:03","startHours":7.04574000885954,"endHours":8.04574000885954,"planetary_lord":"Sun"},{"name":"Hora 2","start":"08:03","end":"09:03","startHours":8.04574000885954,"endHours":9.04574000885954,"planetary_lord":"Mars"},{"name":"Hora 3","start":"09:03","end":"10:03","startHours":9.04574000885954,"endHours":10.04574000885954,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"10:03","end":"11:03","startHours":10.04574000885954,"endHours":11.04574000885954,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"11:03","end":"12:03","startHours":11.04574000885954,"endHours":12.04574000885954,"planetary_lord":"Moon"},{"name":"Hora 6","start":"12:03","end":"13:03","startHours":12.04574000885954,"endHours":13.04574000885954,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"13:03","end":"14:03","startHours":13.04574000885954,"endHours":14.04574000885954,"planetary_lord":"Venus"},{"name":"Hora 8","start":"14:03","end":"15:03","startHours":14.04574000885954,"endHours":15.04574000885954,"planetary_lord":"Sun"},{"name":"Hora 9","start":"15:03","end":"16:03","startHours":15.04574000885954,"endHours":16.04574000885954,"planetary_lord":"Mars"},{"name":"Hora 10","start":"16:03","end":"17:03","startHours":16.04574000885954,"endHours":17.04574000885954,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"17:03","end":"18:03","startHours":17.04574000885954,"endHours":18.04574000885954,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"18:03","end":"19:03","startHours":18.04574000885954,"endHours":19.04574000885954,"planetary_lord":"Moon"},{"name":"Hora 13","start":"19:03","end":"20:03","startHours":19.04574000885954,"endHours":20.04574000885954,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"20:03","end":"21:03","startHours":20.04574000885954,"endHours":21.04574000885954,"planetary_lord":"Venus"},{"name":"Hora 15","start":"21:03","end":"22:03","startHours":21.04574000885954,"endHours":22.04574000885954,"planetary_lord":"Sun"},{"name":"Hora 16","start":"22:03","end":"23:03","startHours":22.04574000885954,"endHours":23.04574000885954,"planetary_lord":"Mars"},{"name":"Hora 17","start":"23:03","end":"00:03","startHours":23.04574000885954,"endHours":24.04574000885954,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"00:03","end":"01:03","startHours":24.04574000885954,"endHours":25.04574000885954,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"01:03","end":"02:03","startHours":25.04574000885954,"endHours":26.04574000885954,"planetary_lord":"Moon"},{"name":"Hora 20","start":"02:03","end":"03:03","startHours":26.04574000885954,"endHours":27.04574000885954,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"03:03","end":"04:03","startHours":27.04574000885954,"endHours":28.04574000885954,"planetary_lord":"Venus"},{"name":"Hora 22","start":"04:03","end":"05:03","startHours":28.04574000885954,"endHours":29.04574000885954,"planetary_lord":"Sun"},{"name":"Hora 23","start":"05:03","end":"06:03","startHours":29.04574000885954,"endHours":30.04574000885954,"planetary_lord":"Mars"},{"name":"Hora 24","start":"06:03","end":"07:03","startHours":30.04574000885954,"endHours":31.04574000885954,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Hasta","Citrā","Svātī","Viśākhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Karka","Siṃha","Tulā","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Vṛścika","Makara","Kumbha"]},"dishaShool":"West (Paścim)","chandraVasa":"North","rahuVasa":"North-East","anandadiYoga":{"name":"Utpāta","quality":"Inauspicious"},"tropicalRitu":"Hemanta (Pre-winter) (tropical)","vedicRitu":"Śarad (Autumn)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-22.857026745144292,"eotMinutes":6.4300119382551255,"ayanamsa":22.0641}},"calendars":{"vikram_samvat":1928,"vikram_samvatsara":"Tāraṇa","saka_samvat":1793,"saka_samvatsara":"Prajāpati","bengali_samvat":1278,"malayalam_era":1047,"nanakshahi_year":402,"lunar_month":"Mārgaśīrṣa","lunar_month_paksha_full":"Mārgaśīrṣa Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Mārgaśīrṣa","lunar_month_amanta":"Kārtika","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Vṛścika (Kārttikai)","ritu":"Hemanta (Pre-winter)","display_summary":"Mārgaśīrṣa Kṛṣṇa Trayodaśī · Vikram 1928 Tāraṇa · Śaka 1793 Prajāpati"},"festivals":[{"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":[{"historical_date":"-0562-04-11","event":"Bhagavān Buddha's birth at Lumbinī","chart_id":"buddha","shared_marker":"same Viśākhā","url":"/day/-0562-04-11","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 December 10, 1871 CE · Ṛṣikeśa · Vidhyamitra","description":"December 10, 1871 CE for Ṛṣikeśa: Kṛṣṇa Trayodaśī, sūryodaya 07:03, sūryāsta 17:18.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1871-12-10","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1871-12-10","sa":"https://sa.vidhyamitra.com/city/rishikesh/1871-12-10","hi":"https://hi.vidhyamitra.com/city/rishikesh/1871-12-10","x-default":"https://vidhyamitra.com/city/rishikesh/1871-12-10"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T11:38:02.739Z","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":"2026-05-31T11:38:02.739Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T11:38:02.739Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}