{"id":"vidhyamitra:city-day:rishikesh:2021-04-11:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/2021-04-11","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2021-04-11","date_display":"April 11, 2021 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":2021,"month":4,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2459315.770833,"kali_year":5122,"ahargana":1870850.2708,"sun":{"sidereal_longitude":357.3249,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":346.0855,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":30,"name":"Amāvasyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Amāvasyā","elongation_degrees":348.7606,"elapsed_within_tithi_degrees":0.7606},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4,"moon_longitude":346.0855,"elapsed_within_degrees":12.7522},"yoga":{"number":26,"name":"Indra","sum_longitude":343.4104},"karana":{"half_tithi_index":58,"name":"Catuṣpāda"},"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":2021,"month":4,"day":11,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2459315.770833,"ahargana":1870850.2708,"kali_year":5122,"ayanamsa_lahiri":24.1502,"grahas":{"sun":{"sidereal_longitude":357.23111,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false},"moon":{"sidereal_longitude":345.43371,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4},"retrograde":false,"latitude":-4.1497},"mars":{"sidereal_longitude":58.07040999999998,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":348.29681,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":300.95541000000003,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":0.9606099999999742,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":287.95660999999996,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":53.3495,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":233.3495,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","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":2021,"month":4,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2459315.770833,"kali_year":5122,"ahargana":1870850.2708,"sun":{"sidereal_longitude":357.3249,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":346.0855,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":30,"name":"Amāvasyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Amāvasyā","elongation_degrees":348.7606,"elapsed_within_tithi_degrees":0.7606},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4,"moon_longitude":346.0855,"elapsed_within_degrees":12.7522},"yoga":{"number":26,"name":"Indra","sum_longitude":343.4104},"karana":{"half_tithi_index":58,"name":"Catuṣpāda"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.15,"elongation":11.239},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.15,"opposition_distance":168.761}},"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":"05:55","sunsetLocal":"18:42","solarNoonLocal":"12:18","dayLengthHours":12.779731141447193,"dayLengthDisplay":"12 Hours 46 Mins 47 Secs","nightLengthDisplay":"11 Hours 13 Mins 13 Secs","moonriseLocal":"05:20","moonsetLocal":"17:43","rahuKala":{"name":"Rāhu Kāla","start":"17:06","end":"18:42","startHours":17.096603960383977,"endHours":18.694070353064877,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:18","end":"13:54","startHours":12.30420478234128,"endHours":13.901671175022178,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:30","end":"17:06","startHours":15.499137567703077,"endHours":17.096603960383977,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:54","end":"09:19","startHours":8.896276477955361,"endHours":9.3222675160036,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:27","end":"06:47","startHours":6.446828009177982,"endHours":6.787620839616574,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:53","end":"12:44","startHours":11.87821374429304,"endHours":12.73019582038952,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:13","end":"05:04","startHours":4.210375059424724,"endHours":5.062357135521203,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:51","end":"05:55","startHours":4.849361616497083,"endHours":5.9143392116176825,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:26","end":"15:17","startHours":14.434159972582478,"endHours":15.286142048678958,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:30","end":"18:54","startHours":18.494070353064878,"endHours":18.894070353064876,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:42","end":"19:14","startHours":18.694070353064877,"endHours":19.226559150625178,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:27","end":"20:12","startHours":18.444070353064877,"endHours":20.194070353064877,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:53","end":"00:44","startHours":23.878213744293042,"endHours":24.73019582038952,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"05:55","end":"07:31","startHours":5.9143392116176825,"endHours":7.511805604298582,"quality":"inauspicious"},{"name":"Chala","start":"07:31","end":"09:07","startHours":7.511805604298582,"endHours":9.10927199697948,"quality":"neutral"},{"name":"Labha","start":"09:07","end":"10:42","startHours":9.10927199697948,"endHours":10.70673838966038,"quality":"auspicious"},{"name":"Amṛta","start":"10:42","end":"12:18","startHours":10.70673838966038,"endHours":12.30420478234128,"quality":"auspicious"},{"name":"Kāla","start":"12:18","end":"13:54","startHours":12.30420478234128,"endHours":13.901671175022178,"quality":"inauspicious"},{"name":"Śubha","start":"13:54","end":"15:30","startHours":13.901671175022178,"endHours":15.499137567703077,"quality":"auspicious"},{"name":"Roga","start":"15:30","end":"17:06","startHours":15.499137567703077,"endHours":17.096603960383977,"quality":"inauspicious"},{"name":"Udveg","start":"17:06","end":"18:42","startHours":17.096603960383977,"endHours":18.694070353064877,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:42","end":"20:06","startHours":18.694070353064877,"endHours":20.096603960383977,"quality":"auspicious"},{"name":"Roga","start":"20:06","end":"21:30","startHours":20.096603960383977,"endHours":21.49913756770308,"quality":"inauspicious"},{"name":"Udveg","start":"21:30","end":"22:54","startHours":21.49913756770308,"endHours":22.90167117502218,"quality":"inauspicious"},{"name":"Chala","start":"22:54","end":"00:18","startHours":22.90167117502218,"endHours":24.30420478234128,"quality":"neutral"},{"name":"Labha","start":"00:18","end":"01:42","startHours":24.30420478234128,"endHours":25.70673838966038,"quality":"auspicious"},{"name":"Amṛta","start":"01:42","end":"03:07","startHours":25.70673838966038,"endHours":27.10927199697948,"quality":"auspicious"},{"name":"Kāla","start":"03:07","end":"04:31","startHours":27.10927199697948,"endHours":28.511805604298583,"quality":"inauspicious"},{"name":"Śubha","start":"04:31","end":"05:55","startHours":28.511805604298583,"endHours":29.914339211617683,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:55","end":"06:55","startHours":5.9143392116176825,"endHours":6.9143392116176825,"planetary_lord":"Sun"},{"name":"Hora 2","start":"06:55","end":"07:55","startHours":6.9143392116176825,"endHours":7.9143392116176825,"planetary_lord":"Mars"},{"name":"Hora 3","start":"07:55","end":"08:55","startHours":7.9143392116176825,"endHours":8.914339211617683,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"08:55","end":"09:55","startHours":8.914339211617683,"endHours":9.914339211617683,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"09:55","end":"10:55","startHours":9.914339211617683,"endHours":10.914339211617683,"planetary_lord":"Moon"},{"name":"Hora 6","start":"10:55","end":"11:55","startHours":10.914339211617683,"endHours":11.914339211617683,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"11:55","end":"12:55","startHours":11.914339211617683,"endHours":12.914339211617683,"planetary_lord":"Venus"},{"name":"Hora 8","start":"12:55","end":"13:55","startHours":12.914339211617683,"endHours":13.914339211617683,"planetary_lord":"Sun"},{"name":"Hora 9","start":"13:55","end":"14:55","startHours":13.914339211617683,"endHours":14.914339211617683,"planetary_lord":"Mars"},{"name":"Hora 10","start":"14:55","end":"15:55","startHours":14.914339211617683,"endHours":15.914339211617683,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"15:55","end":"16:55","startHours":15.914339211617683,"endHours":16.914339211617683,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"16:55","end":"17:55","startHours":16.914339211617683,"endHours":17.914339211617683,"planetary_lord":"Moon"},{"name":"Hora 13","start":"17:55","end":"18:55","startHours":17.914339211617683,"endHours":18.914339211617683,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"18:55","end":"19:55","startHours":18.914339211617683,"endHours":19.914339211617683,"planetary_lord":"Venus"},{"name":"Hora 15","start":"19:55","end":"20:55","startHours":19.914339211617683,"endHours":20.914339211617683,"planetary_lord":"Sun"},{"name":"Hora 16","start":"20:55","end":"21:55","startHours":20.914339211617683,"endHours":21.914339211617683,"planetary_lord":"Mars"},{"name":"Hora 17","start":"21:55","end":"22:55","startHours":21.914339211617683,"endHours":22.914339211617683,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"22:55","end":"23:55","startHours":22.914339211617683,"endHours":23.914339211617683,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"23:55","end":"00:55","startHours":23.914339211617683,"endHours":24.914339211617683,"planetary_lord":"Moon"},{"name":"Hora 20","start":"00:55","end":"01:55","startHours":24.914339211617683,"endHours":25.914339211617683,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"01:55","end":"02:55","startHours":25.914339211617683,"endHours":26.914339211617683,"planetary_lord":"Venus"},{"name":"Hora 22","start":"02:55","end":"03:55","startHours":26.914339211617683,"endHours":27.914339211617683,"planetary_lord":"Sun"},{"name":"Hora 23","start":"03:55","end":"04:55","startHours":27.914339211617683,"endHours":28.914339211617683,"planetary_lord":"Mars"},{"name":"Hora 24","start":"04:55","end":"05:55","startHours":28.914339211617683,"endHours":29.914339211617683,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Revatī"],"unfavorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Citrā","Svātī","Viśākhā","Anurādhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Siṃha","Kanyā","Dhanu","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Karka","Tulā","Vṛścika","Kumbha"]},"dishaShool":"West (Paścim)","chandraVasa":"South-West","rahuVasa":"North-East","anandadiYoga":{"name":"Cara","quality":"Auspicious"},"drikRitu":"Vasanta (Spring) (Drik)","vedicRitu":"Śiśira (Winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":8.337426129668696,"eotMinutes":-1.322686940476858,"ayanamsa":24.1502}},"calendars":{"vikram_samvat":2078,"vikram_samvatsara":"Ānanda","saka_samvat":1943,"saka_samvatsara":"Plava","bengali_samvat":1428,"malayalam_era":1197,"nanakshahi_year":552,"lunar_month":"Caitra","lunar_month_paksha_full":"Caitra Kṛṣṇa Pakṣa","solar_month":"Mīna (Paṅkuṇi)","ritu":"Vasanta (Spring)","display_summary":"Caitra Kṛṣṇa Amāvasyā · Vikram 2078 Ānanda · Śaka 1943 Plava"},"festivals":[{"id":"mina-sankranti","name":"Mīna Saṅkrānti","name_sanskrit":"मीन सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Pisces; Mīna-māsa begins.","vrata":false,"detection":{"sun_rashi":"Mīna"},"precedence":5}],"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":"-3137-10-20","event":"Karṇa-Vadha (Mahābhārata Day 17)","chart_id":"karna","shared_marker":"same Kṛṣṇa Amāvasyā","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 April 11, 2021 CE · Ṛṣikeśa · Vidhyamitra","description":"April 11, 2021 CE for Ṛṣikeśa: Kṛṣṇa Amāvasyā, sūryodaya 05:55, sūryāsta 18:42.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/2021-04-11","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/2021-04-11","sa":"https://sa.vidhyamitra.com/city/rishikesh/2021-04-11","hi":"https://hi.vidhyamitra.com/city/rishikesh/2021-04-11","x-default":"https://vidhyamitra.com/city/rishikesh/2021-04-11"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T17:05:51.612Z","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":"2026-05-15T17:05:51.612Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T17:05:51.612Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}