{"id":"vidhyamitra:city-day:rishikesh:2171-05-11:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/2171-05-11","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2171-05-11","date_display":"May 11, 2171 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":2171,"month":5,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2514131.770833,"kali_year":5273,"ahargana":1925666.2708,"sun":{"sidereal_longitude":23.6889,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":93.4922,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":6,"name":"Ṣaṣṭhī","paksha":"Śukla","full_name":"Śukla Ṣaṣṭhī","elongation_degrees":69.8033,"elapsed_within_tithi_degrees":9.8033},"nakshatra":{"number":8,"name":"Puṣya","pada":1,"moon_longitude":93.4922,"elapsed_within_degrees":0.1589},"yoga":{"number":9,"name":"Śūla","sum_longitude":117.1811},"karana":{"half_tithi_index":11,"name":"Taitila"},"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":2171,"month":5,"day":11,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2514131.770833,"ahargana":1925666.2708,"kali_year":5273,"ayanamsa_lahiri":26.2467,"grahas":{"sun":{"sidereal_longitude":24.06983600000001,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":4},"retrograde":false},"moon":{"sidereal_longitude":90.00663600000001,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":7,"name":"Punarvasu","pada":4},"retrograde":false,"latitude":4.0628},"mars":{"sidereal_longitude":18.339936000000023,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":21.319935999999984,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":161.63843599999996,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":true},"venus":{"sidereal_longitude":7.2590359999999805,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":318.72273599999994,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":28.934,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":208.934,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","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":2171,"month":5,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2514131.770833,"kali_year":5273,"ahargana":1925666.2708,"sun":{"sidereal_longitude":23.6889,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":93.4922,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":6,"name":"Ṣaṣṭhī","paksha":"Śukla","full_name":"Śukla Ṣaṣṭhī","elongation_degrees":69.8033,"elapsed_within_tithi_degrees":9.8033},"nakshatra":{"number":8,"name":"Puṣya","pada":1,"moon_longitude":93.4922,"elapsed_within_degrees":0.1589},"yoga":{"number":9,"name":"Śūla","sum_longitude":117.1811},"karana":{"half_tithi_index":11,"name":"Taitila"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.063,"elongation":69.803},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.063,"opposition_distance":110.197}},"eclipse_window_40days":[{"offset_days":-6,"type":"solar","occurs":true,"moon_latitude":-0.884,"elongation":0.003}]},"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":"05:26","sunsetLocal":"19:00","solarNoonLocal":"12:13","dayLengthHours":13.568913300960366,"dayLengthDisplay":"13 Hours 34 Mins 08 Secs","nightLengthDisplay":"10 Hours 25 Mins 52 Secs","moonriseLocal":"09:43","moonsetLocal":"23:31","rahuKala":{"name":"Rāhu Kāla","start":"08:50","end":"10:31","startHours":8.828065180361431,"endHours":10.524179342981476,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:55","end":"15:37","startHours":13.916407668221568,"endHours":15.612521830841613,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"05:26","end":"07:08","startHours":5.435836855121339,"endHours":7.131951017741385,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:36","end":"09:03","startHours":8.601916625345424,"endHours":9.054213735377438,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:00","end":"06:22","startHours":6.001208242661354,"endHours":6.363045930686964,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:46","end":"12:40","startHours":11.76799639556951,"endHours":12.672590615633533,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:38","end":"04:32","startHours":3.6266484149932903,"endHours":4.531242635057315,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:18","end":"05:26","startHours":4.305094080041309,"endHours":5.435836855121339,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:29","end":"15:23","startHours":14.481779055761583,"endHours":15.386373275825608,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:48","end":"19:12","startHours":18.804750156081706,"endHours":19.204750156081705,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:00","end":"19:34","startHours":19.004750156081705,"endHours":19.57012154362172,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:45","end":"20:30","startHours":18.754750156081705,"endHours":20.504750156081705,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:46","end":"00:40","startHours":23.767996395569508,"endHours":24.672590615633535,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"05:26","end":"07:08","startHours":5.435836855121339,"endHours":7.131951017741385,"quality":"inauspicious"},{"name":"Śubha","start":"07:08","end":"08:50","startHours":7.131951017741385,"endHours":8.828065180361431,"quality":"auspicious"},{"name":"Roga","start":"08:50","end":"10:31","startHours":8.828065180361431,"endHours":10.524179342981476,"quality":"inauspicious"},{"name":"Udveg","start":"10:31","end":"12:13","startHours":10.524179342981476,"endHours":12.220293505601521,"quality":"inauspicious"},{"name":"Chala","start":"12:13","end":"13:55","startHours":12.220293505601521,"endHours":13.916407668221568,"quality":"neutral"},{"name":"Labha","start":"13:55","end":"15:37","startHours":13.916407668221568,"endHours":15.612521830841613,"quality":"auspicious"},{"name":"Amṛta","start":"15:37","end":"17:19","startHours":15.612521830841613,"endHours":17.30863599346166,"quality":"auspicious"},{"name":"Kāla","start":"17:19","end":"19:00","startHours":17.30863599346166,"endHours":19.004750156081705,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"19:00","end":"20:19","startHours":19.004750156081705,"endHours":20.30863599346166,"quality":"auspicious"},{"name":"Amṛta","start":"20:19","end":"21:37","startHours":20.30863599346166,"endHours":21.612521830841615,"quality":"auspicious"},{"name":"Kāla","start":"21:37","end":"22:55","startHours":21.612521830841615,"endHours":22.916407668221566,"quality":"inauspicious"},{"name":"Śubha","start":"22:55","end":"00:13","startHours":22.916407668221566,"endHours":24.22029350560152,"quality":"auspicious"},{"name":"Roga","start":"00:13","end":"01:31","startHours":24.22029350560152,"endHours":25.524179342981476,"quality":"inauspicious"},{"name":"Udveg","start":"01:31","end":"02:50","startHours":25.524179342981476,"endHours":26.82806518036143,"quality":"inauspicious"},{"name":"Chala","start":"02:50","end":"04:08","startHours":26.82806518036143,"endHours":28.131951017741386,"quality":"neutral"},{"name":"Labha","start":"04:08","end":"05:26","startHours":28.131951017741386,"endHours":29.435836855121337,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:26","end":"06:26","startHours":5.435836855121339,"endHours":6.435836855121339,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"06:26","end":"07:26","startHours":6.435836855121339,"endHours":7.435836855121339,"planetary_lord":"Moon"},{"name":"Hora 3","start":"07:26","end":"08:26","startHours":7.435836855121339,"endHours":8.43583685512134,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"08:26","end":"09:26","startHours":8.43583685512134,"endHours":9.43583685512134,"planetary_lord":"Venus"},{"name":"Hora 5","start":"09:26","end":"10:26","startHours":9.43583685512134,"endHours":10.43583685512134,"planetary_lord":"Sun"},{"name":"Hora 6","start":"10:26","end":"11:26","startHours":10.43583685512134,"endHours":11.43583685512134,"planetary_lord":"Mars"},{"name":"Hora 7","start":"11:26","end":"12:26","startHours":11.43583685512134,"endHours":12.43583685512134,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"12:26","end":"13:26","startHours":12.43583685512134,"endHours":13.43583685512134,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"13:26","end":"14:26","startHours":13.43583685512134,"endHours":14.43583685512134,"planetary_lord":"Moon"},{"name":"Hora 10","start":"14:26","end":"15:26","startHours":14.43583685512134,"endHours":15.43583685512134,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"15:26","end":"16:26","startHours":15.43583685512134,"endHours":16.435836855121337,"planetary_lord":"Venus"},{"name":"Hora 12","start":"16:26","end":"17:26","startHours":16.435836855121337,"endHours":17.435836855121337,"planetary_lord":"Sun"},{"name":"Hora 13","start":"17:26","end":"18:26","startHours":17.435836855121337,"endHours":18.435836855121337,"planetary_lord":"Mars"},{"name":"Hora 14","start":"18:26","end":"19:26","startHours":18.435836855121337,"endHours":19.435836855121337,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"19:26","end":"20:26","startHours":19.435836855121337,"endHours":20.435836855121337,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"20:26","end":"21:26","startHours":20.435836855121337,"endHours":21.435836855121337,"planetary_lord":"Moon"},{"name":"Hora 17","start":"21:26","end":"22:26","startHours":21.435836855121337,"endHours":22.435836855121337,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"22:26","end":"23:26","startHours":22.435836855121337,"endHours":23.435836855121337,"planetary_lord":"Venus"},{"name":"Hora 19","start":"23:26","end":"00:26","startHours":23.435836855121337,"endHours":24.435836855121337,"planetary_lord":"Sun"},{"name":"Hora 20","start":"00:26","end":"01:26","startHours":24.435836855121337,"endHours":25.435836855121337,"planetary_lord":"Mars"},{"name":"Hora 21","start":"01:26","end":"02:26","startHours":25.435836855121337,"endHours":26.435836855121337,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"02:26","end":"03:26","startHours":26.435836855121337,"endHours":27.435836855121337,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"03:26","end":"04:26","startHours":27.435836855121337,"endHours":28.435836855121337,"planetary_lord":"Moon"},{"name":"Hora 24","start":"04:26","end":"05:26","startHours":28.435836855121337,"endHours":29.435836855121337,"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":["Meṣa","Vṛṣabha","Karka","Kanyā","Dhanu","Makara"],"unfavorable_rashis":["Mithuna","Siṃha","Tulā","Vṛścika","Kumbha","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-West","rahuVasa":"East","anandadiYoga":{"name":"Prajāpati","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":17.823662005343365,"eotMinutes":3.71198966390865,"ayanamsa":26.2467}},"calendars":{"vikram_samvat":2228,"vikram_samvatsara":"Tāraṇa","saka_samvat":2093,"saka_samvatsara":"Prajāpati","bengali_samvat":1578,"malayalam_era":1347,"nanakshahi_year":702,"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 Ṣaṣṭhī · Vikram 2228 Tāraṇa · Śaka 2093 Prajāpati"},"festivals":[],"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 May 11, 2171 CE · Ṛṣikeśa · Vidhyamitra","description":"May 11, 2171 CE for Ṛṣikeśa: Śukla Ṣaṣṭhī, sūryodaya 05:26, sūryāsta 19:00.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/2171-05-11","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/2171-05-11","sa":"https://sa.vidhyamitra.com/city/rishikesh/2171-05-11","hi":"https://hi.vidhyamitra.com/city/rishikesh/2171-05-11","x-default":"https://vidhyamitra.com/city/rishikesh/2171-05-11"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T19:05:04.537Z","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":"2026-05-31T19:05:04.537Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T19:05:04.537Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}