{"id":"vidhyamitra:city-day:rishikesh:2151-02-20:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/2151-02-20","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2151-02-20","date_display":"February 20, 2151 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":2151,"month":2,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2506746.770833,"kali_year":5252,"ahargana":1918281.2708,"sun":{"sidereal_longitude":304.8704,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":345.7468,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":40.8763,"elapsed_within_tithi_degrees":4.8763},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4,"moon_longitude":345.7468,"elapsed_within_degrees":12.4135},"yoga":{"number":22,"name":"Sādhya","sum_longitude":290.6172},"karana":{"half_tithi_index":6,"name":"Vaṇija"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"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":2151,"month":2,"day":20,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2506746.770833,"ahargana":1918281.2708,"kali_year":5252,"ayanamsa_lahiri":25.9643,"grahas":{"sun":{"sidereal_longitude":305.111497,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":343.908397,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4},"retrograde":false,"latitude":-4.3356},"mars":{"sidereal_longitude":76.48139700000002,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":321.093697,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":275.17089699999997,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":339.952697,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":67.82019700000001,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":60.2269,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":240.2269,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","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":2151,"month":2,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2506746.770833,"kali_year":5252,"ahargana":1918281.2708,"sun":{"sidereal_longitude":304.8704,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":345.7468,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":40.8763,"elapsed_within_tithi_degrees":4.8763},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4,"moon_longitude":345.7468,"elapsed_within_degrees":12.4135},"yoga":{"number":22,"name":"Sādhya","sum_longitude":290.6172},"karana":{"half_tithi_index":6,"name":"Vaṇija"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.336,"elongation":40.876},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.336,"opposition_distance":139.124}},"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":"06:53","sunsetLocal":"18:09","solarNoonLocal":"12:31","dayLengthHours":11.262026507042346,"dayLengthDisplay":"11 Hours 15 Mins 43 Secs","nightLengthDisplay":"12 Hours 44 Mins 17 Secs","moonriseLocal":"08:55","moonsetLocal":"21:18","rahuKala":{"name":"Rāhu Kāla","start":"09:42","end":"11:07","startHours":9.704709123984784,"endHours":11.112462437365078,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:56","end":"15:20","startHours":13.927969064125666,"endHours":15.335722377505956,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"06:53","end":"08:18","startHours":6.889202497224198,"endHours":8.29695581060449,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:31","end":"09:54","startHours":9.517008682200746,"endHours":9.892409565768823,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:22","end":"07:40","startHours":7.358453601684296,"endHours":7.658774308538758,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:09","end":"12:54","startHours":12.144814867177292,"endHours":12.895616634313448,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:23","end":"06:08","startHours":5.387598962951885,"endHours":6.138400730088041,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:57","end":"06:53","startHours":5.950700288304002,"endHours":6.889202497224198,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:24","end":"15:09","startHours":14.397220168585761,"endHours":15.148021935721918,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:57","end":"18:21","startHours":17.951229004266544,"endHours":18.351229004266543,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:09","end":"18:37","startHours":18.151229004266543,"endHours":18.620480108726642,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:54","end":"19:39","startHours":17.901229004266543,"endHours":19.651229004266543,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:09","end":"00:54","startHours":24.144814867177296,"endHours":24.89561663431345,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"06:53","end":"08:18","startHours":6.889202497224198,"endHours":8.29695581060449,"quality":"inauspicious"},{"name":"Śubha","start":"08:18","end":"09:42","startHours":8.29695581060449,"endHours":9.704709123984784,"quality":"auspicious"},{"name":"Roga","start":"09:42","end":"11:07","startHours":9.704709123984784,"endHours":11.112462437365078,"quality":"inauspicious"},{"name":"Udveg","start":"11:07","end":"12:31","startHours":11.112462437365078,"endHours":12.520215750745372,"quality":"inauspicious"},{"name":"Chala","start":"12:31","end":"13:56","startHours":12.520215750745372,"endHours":13.927969064125666,"quality":"neutral"},{"name":"Labha","start":"13:56","end":"15:20","startHours":13.927969064125666,"endHours":15.335722377505956,"quality":"auspicious"},{"name":"Amṛta","start":"15:20","end":"16:45","startHours":15.335722377505956,"endHours":16.74347569088625,"quality":"auspicious"},{"name":"Kāla","start":"16:45","end":"18:09","startHours":16.74347569088625,"endHours":18.151229004266543,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"18:09","end":"19:45","startHours":18.151229004266543,"endHours":19.74347569088625,"quality":"auspicious"},{"name":"Amṛta","start":"19:45","end":"21:20","startHours":19.74347569088625,"endHours":21.335722377505956,"quality":"auspicious"},{"name":"Kāla","start":"21:20","end":"22:56","startHours":21.335722377505956,"endHours":22.927969064125662,"quality":"inauspicious"},{"name":"Śubha","start":"22:56","end":"00:31","startHours":22.927969064125662,"endHours":24.520215750745372,"quality":"auspicious"},{"name":"Roga","start":"00:31","end":"02:07","startHours":24.520215750745372,"endHours":26.112462437365075,"quality":"inauspicious"},{"name":"Udveg","start":"02:07","end":"03:42","startHours":26.112462437365075,"endHours":27.704709123984784,"quality":"inauspicious"},{"name":"Chala","start":"03:42","end":"05:18","startHours":27.704709123984784,"endHours":29.29695581060449,"quality":"neutral"},{"name":"Labha","start":"05:18","end":"06:53","startHours":29.29695581060449,"endHours":30.889202497224197,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:53","end":"07:53","startHours":6.889202497224198,"endHours":7.889202497224198,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"07:53","end":"08:53","startHours":7.889202497224198,"endHours":8.889202497224197,"planetary_lord":"Moon"},{"name":"Hora 3","start":"08:53","end":"09:53","startHours":8.889202497224197,"endHours":9.889202497224197,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"09:53","end":"10:53","startHours":9.889202497224197,"endHours":10.889202497224197,"planetary_lord":"Venus"},{"name":"Hora 5","start":"10:53","end":"11:53","startHours":10.889202497224197,"endHours":11.889202497224197,"planetary_lord":"Sun"},{"name":"Hora 6","start":"11:53","end":"12:53","startHours":11.889202497224197,"endHours":12.889202497224197,"planetary_lord":"Mars"},{"name":"Hora 7","start":"12:53","end":"13:53","startHours":12.889202497224197,"endHours":13.889202497224197,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"13:53","end":"14:53","startHours":13.889202497224197,"endHours":14.889202497224197,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"14:53","end":"15:53","startHours":14.889202497224197,"endHours":15.889202497224197,"planetary_lord":"Moon"},{"name":"Hora 10","start":"15:53","end":"16:53","startHours":15.889202497224197,"endHours":16.889202497224197,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"16:53","end":"17:53","startHours":16.889202497224197,"endHours":17.889202497224197,"planetary_lord":"Venus"},{"name":"Hora 12","start":"17:53","end":"18:53","startHours":17.889202497224197,"endHours":18.889202497224197,"planetary_lord":"Sun"},{"name":"Hora 13","start":"18:53","end":"19:53","startHours":18.889202497224197,"endHours":19.889202497224197,"planetary_lord":"Mars"},{"name":"Hora 14","start":"19:53","end":"20:53","startHours":19.889202497224197,"endHours":20.889202497224197,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"20:53","end":"21:53","startHours":20.889202497224197,"endHours":21.889202497224197,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"21:53","end":"22:53","startHours":21.889202497224197,"endHours":22.889202497224197,"planetary_lord":"Moon"},{"name":"Hora 17","start":"22:53","end":"23:53","startHours":22.889202497224197,"endHours":23.889202497224197,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"23:53","end":"00:53","startHours":23.889202497224197,"endHours":24.889202497224197,"planetary_lord":"Venus"},{"name":"Hora 19","start":"00:53","end":"01:53","startHours":24.889202497224197,"endHours":25.889202497224197,"planetary_lord":"Sun"},{"name":"Hora 20","start":"01:53","end":"02:53","startHours":25.889202497224197,"endHours":26.889202497224197,"planetary_lord":"Mars"},{"name":"Hora 21","start":"02:53","end":"03:53","startHours":26.889202497224197,"endHours":27.889202497224197,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"03:53","end":"04:53","startHours":27.889202497224197,"endHours":28.889202497224197,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"04:53","end":"05:53","startHours":28.889202497224197,"endHours":29.889202497224197,"planetary_lord":"Moon"},{"name":"Hora 24","start":"05:53","end":"06:53","startHours":29.889202497224197,"endHours":30.889202497224197,"planetary_lord":"Mercury"}],"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":"East (Pūrva)","chandraVasa":"South-West","rahuVasa":"East","anandadiYoga":{"name":"Mausala","quality":"Inauspicious"},"tropicalRitu":"Śiśira (Winter) (tropical)","vedicRitu":"Śiśira (Winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-11.090786256681888,"eotMinutes":-14.28334504472219,"ayanamsa":25.9643}},"calendars":{"vikram_samvat":2208,"vikram_samvatsara":"Raktākṣī","saka_samvat":2073,"saka_samvatsara":"Virodhakṛt","bengali_samvat":1558,"malayalam_era":1327,"nanakshahi_year":682,"lunar_month":"Phālguna","lunar_month_paksha_full":"Phālguna Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Phālguna","lunar_month_amanta":"Phālguna","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Kumbha (Māsi)","ritu":"Śiśira (Winter)","display_summary":"Phālguna Śukla Caturthī · Vikram 2208 Raktākṣī · Śaka 2073 Virodhakṛt"},"festivals":[{"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":"shani-walk","name":"Śani Walk","name_sanskrit":"शनि यात्रा","type":"graha","description":"Tapas + endurance + BG 17.14-19.","step_count":7,"url":"/walk/shani-walk"},"reason":"Śanivāra (Saturday) — 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 February 20, 2151 CE · Ṛṣikeśa · Vidhyamitra","description":"February 20, 2151 CE for Ṛṣikeśa: Śukla Caturthī, sūryodaya 06:53, sūryāsta 18:09.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/2151-02-20","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/2151-02-20","sa":"https://sa.vidhyamitra.com/city/rishikesh/2151-02-20","hi":"https://hi.vidhyamitra.com/city/rishikesh/2151-02-20","x-default":"https://vidhyamitra.com/city/rishikesh/2151-02-20"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T09:50:47.997Z","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":"2026-06-02T09:50:47.997Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T09:50:47.997Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}