{"id":"vidhyamitra:city-day:rishikesh:1871-04-30:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1871-04-30","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1871-04-30","date_display":"April 30, 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":4,"day":30,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2404547.770833,"kali_year":4973,"ahargana":1816082.2708,"sun":{"sidereal_longitude":17.5481,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":134.3173,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":116.7692,"elapsed_within_tithi_degrees":8.7692},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1,"moon_longitude":134.3173,"elapsed_within_degrees":0.984},"yoga":{"number":12,"name":"Dhruva","sum_longitude":151.8655},"karana":{"half_tithi_index":19,"name":"Gara"},"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":4,"day":30,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2404547.770833,"ahargana":1816082.2708,"kali_year":4973,"ayanamsa_lahiri":22.0555,"grahas":{"sun":{"sidereal_longitude":17.190049999999985,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":131.47985,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":false,"latitude":3.8601},"mars":{"sidereal_longitude":148.76734999999996,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":true},"mercury":{"sidereal_longitude":37.48505,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":64.52224999999999,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":52.64794999999998,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":258.82115,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":75.2217,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":255.2217,"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":1871,"month":4,"day":30,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2404547.770833,"kali_year":4973,"ahargana":1816082.2708,"sun":{"sidereal_longitude":17.5481,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":134.3173,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":116.7692,"elapsed_within_tithi_degrees":8.7692},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1,"moon_longitude":134.3173,"elapsed_within_degrees":0.984},"yoga":{"number":12,"name":"Dhruva","sum_longitude":151.8655},"karana":{"half_tithi_index":19,"name":"Gara"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.86,"elongation":116.769},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.86,"opposition_distance":63.231}},"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":"05:35","sunsetLocal":"18:53","solarNoonLocal":"12:14","dayLengthHours":13.289472083976499,"dayLengthDisplay":"13 Hours 17 Mins 22 Secs","nightLengthDisplay":"10 Hours 42 Mins 38 Secs","moonriseLocal":"13:25","moonsetLocal":"02:18","rahuKala":{"name":"Rāhu Kāla","start":"17:13","end":"18:53","startHours":17.219287678337817,"endHours":18.88047168883488,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:14","end":"13:54","startHours":12.235735646846631,"endHours":13.896919657343695,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:33","end":"17:13","startHours":15.558103667840758,"endHours":17.219287678337817,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:42","end":"09:08","startHours":8.6918764244529,"endHours":9.134858827252117,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:09","end":"06:30","startHours":6.144727608357404,"endHours":6.4991135305967775,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:48","end":"12:41","startHours":11.792753244047415,"endHours":12.678718049645848,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:49","end":"04:42","startHours":3.8190699936615164,"endHours":4.70503479925995,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:29","end":"05:35","startHours":4.483543597860342,"endHours":5.590999604858383,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:27","end":"15:20","startHours":14.450647660842716,"endHours":15.33661246644115,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:41","end":"19:05","startHours":18.68047168883488,"endHours":19.08047168883488,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:53","end":"19:26","startHours":18.88047168883488,"endHours":19.4341996923339,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:38","end":"20:23","startHours":18.63047168883488,"endHours":20.38047168883488,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:48","end":"00:41","startHours":23.792753244047415,"endHours":24.67871804964585,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"05:35","end":"07:15","startHours":5.590999604858383,"endHours":7.252183615355445,"quality":"inauspicious"},{"name":"Chala","start":"07:15","end":"08:55","startHours":7.252183615355445,"endHours":8.913367625852509,"quality":"neutral"},{"name":"Labha","start":"08:55","end":"10:34","startHours":8.913367625852509,"endHours":10.57455163634957,"quality":"auspicious"},{"name":"Amṛta","start":"10:34","end":"12:14","startHours":10.57455163634957,"endHours":12.235735646846631,"quality":"auspicious"},{"name":"Kāla","start":"12:14","end":"13:54","startHours":12.235735646846631,"endHours":13.896919657343695,"quality":"inauspicious"},{"name":"Śubha","start":"13:54","end":"15:33","startHours":13.896919657343695,"endHours":15.558103667840758,"quality":"auspicious"},{"name":"Roga","start":"15:33","end":"17:13","startHours":15.558103667840758,"endHours":17.219287678337817,"quality":"inauspicious"},{"name":"Udveg","start":"17:13","end":"18:53","startHours":17.219287678337817,"endHours":18.88047168883488,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:53","end":"20:13","startHours":18.88047168883488,"endHours":20.219287678337817,"quality":"auspicious"},{"name":"Roga","start":"20:13","end":"21:33","startHours":20.219287678337817,"endHours":21.558103667840754,"quality":"inauspicious"},{"name":"Udveg","start":"21:33","end":"22:54","startHours":21.558103667840754,"endHours":22.896919657343695,"quality":"inauspicious"},{"name":"Chala","start":"22:54","end":"00:14","startHours":22.896919657343695,"endHours":24.23573564684663,"quality":"neutral"},{"name":"Labha","start":"00:14","end":"01:34","startHours":24.23573564684663,"endHours":25.574551636349568,"quality":"auspicious"},{"name":"Amṛta","start":"01:34","end":"02:55","startHours":25.574551636349568,"endHours":26.91336762585251,"quality":"auspicious"},{"name":"Kāla","start":"02:55","end":"04:15","startHours":26.91336762585251,"endHours":28.252183615355445,"quality":"inauspicious"},{"name":"Śubha","start":"04:15","end":"05:35","startHours":28.252183615355445,"endHours":29.590999604858382,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:35","end":"06:35","startHours":5.590999604858383,"endHours":6.590999604858383,"planetary_lord":"Sun"},{"name":"Hora 2","start":"06:35","end":"07:35","startHours":6.590999604858383,"endHours":7.590999604858383,"planetary_lord":"Mars"},{"name":"Hora 3","start":"07:35","end":"08:35","startHours":7.590999604858383,"endHours":8.590999604858382,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"08:35","end":"09:35","startHours":8.590999604858382,"endHours":9.590999604858382,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"09:35","end":"10:35","startHours":9.590999604858382,"endHours":10.590999604858382,"planetary_lord":"Moon"},{"name":"Hora 6","start":"10:35","end":"11:35","startHours":10.590999604858382,"endHours":11.590999604858382,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"11:35","end":"12:35","startHours":11.590999604858382,"endHours":12.590999604858382,"planetary_lord":"Venus"},{"name":"Hora 8","start":"12:35","end":"13:35","startHours":12.590999604858382,"endHours":13.590999604858382,"planetary_lord":"Sun"},{"name":"Hora 9","start":"13:35","end":"14:35","startHours":13.590999604858382,"endHours":14.590999604858382,"planetary_lord":"Mars"},{"name":"Hora 10","start":"14:35","end":"15:35","startHours":14.590999604858382,"endHours":15.590999604858382,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"15:35","end":"16:35","startHours":15.590999604858382,"endHours":16.590999604858382,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"16:35","end":"17:35","startHours":16.590999604858382,"endHours":17.590999604858382,"planetary_lord":"Moon"},{"name":"Hora 13","start":"17:35","end":"18:35","startHours":17.590999604858382,"endHours":18.590999604858382,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"18:35","end":"19:35","startHours":18.590999604858382,"endHours":19.590999604858382,"planetary_lord":"Venus"},{"name":"Hora 15","start":"19:35","end":"20:35","startHours":19.590999604858382,"endHours":20.590999604858382,"planetary_lord":"Sun"},{"name":"Hora 16","start":"20:35","end":"21:35","startHours":20.590999604858382,"endHours":21.590999604858382,"planetary_lord":"Mars"},{"name":"Hora 17","start":"21:35","end":"22:35","startHours":21.590999604858382,"endHours":22.590999604858382,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"22:35","end":"23:35","startHours":22.590999604858382,"endHours":23.590999604858382,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"23:35","end":"00:35","startHours":23.590999604858382,"endHours":24.590999604858382,"planetary_lord":"Moon"},{"name":"Hora 20","start":"00:35","end":"01:35","startHours":24.590999604858382,"endHours":25.590999604858382,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"01:35","end":"02:35","startHours":25.590999604858382,"endHours":26.590999604858382,"planetary_lord":"Venus"},{"name":"Hora 22","start":"02:35","end":"03:35","startHours":26.590999604858382,"endHours":27.590999604858382,"planetary_lord":"Sun"},{"name":"Hora 23","start":"03:35","end":"04:35","startHours":27.590999604858382,"endHours":28.590999604858382,"planetary_lord":"Mars"},{"name":"Hora 24","start":"04:35","end":"05:35","startHours":28.590999604858382,"endHours":29.590999604858382,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Uttara Phalgunī","Hasta","Citrā","Svātī","Viśākhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Mithuna","Siṃha","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Kanyā","Vṛścika","Dhanu","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"West","rahuVasa":"North-East","anandadiYoga":{"name":"Chatra","quality":"Auspicious"},"tropicalRitu":"Vasanta (Spring) (tropical)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":14.573604858665377,"eotMinutes":2.785461189202204,"ayanamsa":22.0555}},"calendars":{"vikram_samvat":1928,"vikram_samvatsara":"Tāraṇa","saka_samvat":1793,"saka_samvatsara":"Prajāpati","bengali_samvat":1278,"malayalam_era":1047,"nanakshahi_year":402,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Vaiśākha","lunar_month_amanta":"Vaiśākha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Vasanta (Spring)","display_summary":"Vaiśākha Śukla Daśamī · Vikram 1928 Tāraṇa · Śaka 1793 Prajāpati"},"festivals":[],"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 April 30, 1871 CE · Ṛṣikeśa · Vidhyamitra","description":"April 30, 1871 CE for Ṛṣikeśa: Śukla Daśamī, sūryodaya 05:35, sūryāsta 18:53.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1871-04-30","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1871-04-30","sa":"https://sa.vidhyamitra.com/city/rishikesh/1871-04-30","hi":"https://hi.vidhyamitra.com/city/rishikesh/1871-04-30","x-default":"https://vidhyamitra.com/city/rishikesh/1871-04-30"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T15:46:38.210Z","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":"2026-05-31T15:46:38.210Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T15:46:38.210Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}