{"id":"vidhyamitra:city-day:rishikesh:2155-04-21:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/2155-04-21","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2155-04-21","date_display":"April 21, 2155 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":2155,"month":4,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2508267.770833,"kali_year":5257,"ahargana":1919802.2708,"sun":{"sidereal_longitude":4.475,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":227.5778,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":223.1027,"elapsed_within_tithi_degrees":7.1027},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1,"moon_longitude":227.5778,"elapsed_within_degrees":0.9111},"yoga":{"number":18,"name":"Varīyān","sum_longitude":232.0528},"karana":{"half_tithi_index":37,"name":"Bālava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"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":2155,"month":4,"day":21,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2508267.770833,"ahargana":1919802.2708,"kali_year":5257,"ayanamsa_lahiri":26.0224,"grahas":{"sun":{"sidereal_longitude":4.720282999999995,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":229.64138300000002,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1},"retrograde":false,"latitude":-4.17},"mars":{"sidereal_longitude":145.31348300000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":true},"mercury":{"sidereal_longitude":7.679683000000011,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":3},"retrograde":true},"jupiter":{"sidereal_longitude":38.843883000000005,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":341.828283,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":123.15398299999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":339.637,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":159.637,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"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":2155,"month":4,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2508267.770833,"kali_year":5257,"ahargana":1919802.2708,"sun":{"sidereal_longitude":4.475,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":227.5778,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":223.1027,"elapsed_within_tithi_degrees":7.1027},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1,"moon_longitude":227.5778,"elapsed_within_degrees":0.9111},"yoga":{"number":18,"name":"Varīyān","sum_longitude":232.0528},"karana":{"half_tithi_index":37,"name":"Bālava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.17,"elongation":136.897},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.17,"opposition_distance":43.103}},"eclipse_window_40days":[{"offset_days":-19,"type":"solar","occurs":true,"moon_latitude":0.5,"elongation":1.176}]},"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":"05:44","sunsetLocal":"18:47","solarNoonLocal":"12:16","dayLengthHours":13.053515052396158,"dayLengthDisplay":"13 Hours 03 Mins 13 Secs","nightLengthDisplay":"10 Hours 56 Mins 47 Secs","moonriseLocal":"22:08","moonsetLocal":"08:22","rahuKala":{"name":"Rāhu Kāla","start":"07:22","end":"09:00","startHours":7.36730304133207,"endHours":8.998992422881589,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:38","end":"12:16","startHours":10.63068180443111,"endHours":12.26237118598063,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:54","end":"15:32","startHours":13.89406056753015,"endHours":15.525749949079668,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:47","end":"09:13","startHours":8.781433838674987,"endHours":9.216551007088192,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:17","end":"06:38","startHours":6.279510120299057,"endHours":6.627603855029621,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:50","end":"12:42","startHours":11.827254017567425,"endHours":12.697488354393835,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:00","end":"04:52","startHours":3.9951449861297292,"endHours":4.86537932295614,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:39","end":"05:44","startHours":4.647820738749537,"endHours":5.73561365978255,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:26","end":"15:18","startHours":14.437957028046654,"endHours":15.308191364873064,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:35","end":"18:59","startHours":18.58912871217871,"endHours":18.989128712178708,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:47","end":"19:20","startHours":18.78912871217871,"endHours":19.333025172695216,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:32","end":"20:17","startHours":18.53912871217871,"endHours":20.28912871217871,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:50","end":"00:42","startHours":23.827254017567423,"endHours":24.697488354393837,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"05:44","end":"07:22","startHours":5.73561365978255,"endHours":7.36730304133207,"quality":"auspicious"},{"name":"Kāla","start":"07:22","end":"09:00","startHours":7.36730304133207,"endHours":8.998992422881589,"quality":"inauspicious"},{"name":"Śubha","start":"09:00","end":"10:38","startHours":8.998992422881589,"endHours":10.63068180443111,"quality":"auspicious"},{"name":"Roga","start":"10:38","end":"12:16","startHours":10.63068180443111,"endHours":12.26237118598063,"quality":"inauspicious"},{"name":"Udveg","start":"12:16","end":"13:54","startHours":12.26237118598063,"endHours":13.89406056753015,"quality":"inauspicious"},{"name":"Chala","start":"13:54","end":"15:32","startHours":13.89406056753015,"endHours":15.525749949079668,"quality":"neutral"},{"name":"Labha","start":"15:32","end":"17:09","startHours":15.525749949079668,"endHours":17.157439330629188,"quality":"auspicious"},{"name":"Amṛta","start":"17:09","end":"18:47","startHours":17.157439330629188,"endHours":18.78912871217871,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:47","end":"20:09","startHours":18.78912871217871,"endHours":20.157439330629188,"quality":"neutral"},{"name":"Labha","start":"20:09","end":"21:32","startHours":20.157439330629188,"endHours":21.525749949079668,"quality":"auspicious"},{"name":"Amṛta","start":"21:32","end":"22:54","startHours":21.525749949079668,"endHours":22.89406056753015,"quality":"auspicious"},{"name":"Kāla","start":"22:54","end":"00:16","startHours":22.89406056753015,"endHours":24.26237118598063,"quality":"inauspicious"},{"name":"Śubha","start":"00:16","end":"01:38","startHours":24.26237118598063,"endHours":25.63068180443111,"quality":"auspicious"},{"name":"Roga","start":"01:38","end":"03:00","startHours":25.63068180443111,"endHours":26.998992422881592,"quality":"inauspicious"},{"name":"Udveg","start":"03:00","end":"04:22","startHours":26.998992422881592,"endHours":28.36730304133207,"quality":"inauspicious"},{"name":"Chala","start":"04:22","end":"05:44","startHours":28.36730304133207,"endHours":29.73561365978255,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"05:44","end":"06:44","startHours":5.73561365978255,"endHours":6.73561365978255,"planetary_lord":"Moon"},{"name":"Hora 2","start":"06:44","end":"07:44","startHours":6.73561365978255,"endHours":7.73561365978255,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"07:44","end":"08:44","startHours":7.73561365978255,"endHours":8.735613659782551,"planetary_lord":"Venus"},{"name":"Hora 4","start":"08:44","end":"09:44","startHours":8.735613659782551,"endHours":9.735613659782551,"planetary_lord":"Sun"},{"name":"Hora 5","start":"09:44","end":"10:44","startHours":9.735613659782551,"endHours":10.735613659782551,"planetary_lord":"Mars"},{"name":"Hora 6","start":"10:44","end":"11:44","startHours":10.735613659782551,"endHours":11.735613659782551,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"11:44","end":"12:44","startHours":11.735613659782551,"endHours":12.735613659782551,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"12:44","end":"13:44","startHours":12.735613659782551,"endHours":13.735613659782551,"planetary_lord":"Moon"},{"name":"Hora 9","start":"13:44","end":"14:44","startHours":13.735613659782551,"endHours":14.735613659782551,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"14:44","end":"15:44","startHours":14.735613659782551,"endHours":15.735613659782551,"planetary_lord":"Venus"},{"name":"Hora 11","start":"15:44","end":"16:44","startHours":15.735613659782551,"endHours":16.73561365978255,"planetary_lord":"Sun"},{"name":"Hora 12","start":"16:44","end":"17:44","startHours":16.73561365978255,"endHours":17.73561365978255,"planetary_lord":"Mars"},{"name":"Hora 13","start":"17:44","end":"18:44","startHours":17.73561365978255,"endHours":18.73561365978255,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"18:44","end":"19:44","startHours":18.73561365978255,"endHours":19.73561365978255,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"19:44","end":"20:44","startHours":19.73561365978255,"endHours":20.73561365978255,"planetary_lord":"Moon"},{"name":"Hora 16","start":"20:44","end":"21:44","startHours":20.73561365978255,"endHours":21.73561365978255,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"21:44","end":"22:44","startHours":21.73561365978255,"endHours":22.73561365978255,"planetary_lord":"Venus"},{"name":"Hora 18","start":"22:44","end":"23:44","startHours":22.73561365978255,"endHours":23.73561365978255,"planetary_lord":"Sun"},{"name":"Hora 19","start":"23:44","end":"00:44","startHours":23.73561365978255,"endHours":24.73561365978255,"planetary_lord":"Mars"},{"name":"Hora 20","start":"00:44","end":"01:44","startHours":24.73561365978255,"endHours":25.73561365978255,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"01:44","end":"02:44","startHours":25.73561365978255,"endHours":26.73561365978255,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"02:44","end":"03:44","startHours":26.73561365978255,"endHours":27.73561365978255,"planetary_lord":"Moon"},{"name":"Hora 23","start":"03:44","end":"04:44","startHours":27.73561365978255,"endHours":28.73561365978255,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"04:44","end":"05:44","startHours":28.73561365978255,"endHours":29.73561365978255,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"unfavorable_nakshatras":["Ārdrā","Punarvasu","Puṣya","Aśleṣā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Vṛścika","Makara"],"unfavorable_rashis":["Mithuna","Karka","Tulā","Dhanu","Kumbha","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"North-East","rahuVasa":"North-East","anandadiYoga":{"name":"Mausala","quality":"Inauspicious"},"tropicalRitu":"Vasanta (Spring) (tropical)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":11.73083194093978,"eotMinutes":1.1873288411622274,"ayanamsa":26.0224}},"calendars":{"vikram_samvat":2212,"vikram_samvatsara":"Vibhava","saka_samvat":2077,"saka_samvatsara":"Rākṣasa","bengali_samvat":1562,"malayalam_era":1331,"nanakshahi_year":686,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Vaiśākha","lunar_month_amanta":"Caitra","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 Kṛṣṇa Caturthī · Vikram 2212 Vibhava · Śaka 2077 Rākṣasa"},"festivals":[{"id":"sankashti-chaturthi","name":"Saṅkaṣṭī Caturthī","name_sanskrit":"सङ्कष्टी चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Gaṇeśa vrata.","vrata":true,"detection":{"tithi_number":19,"tithi_paksha":"Kṛṣṇa"},"precedence":6}],"todays_walk":{"walk":{"id":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7.","step_count":5,"url":"/walk/chandra-walk"},"reason":"Somavāra (Monday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3137-10-20","event":"Karṇa-Vadha (Mahābhārata Day 17)","chart_id":"karna","shared_marker":"same Jyeṣṭhā","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 21, 2155 CE · Ṛṣikeśa · Vidhyamitra","description":"April 21, 2155 CE for Ṛṣikeśa: Kṛṣṇa Caturthī, sūryodaya 05:44, sūryāsta 18:47.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/2155-04-21","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/2155-04-21","sa":"https://sa.vidhyamitra.com/city/rishikesh/2155-04-21","hi":"https://hi.vidhyamitra.com/city/rishikesh/2155-04-21","x-default":"https://vidhyamitra.com/city/rishikesh/2155-04-21"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-30T23:28:06.536Z","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":"2026-05-30T23:28:06.536Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-30T23:28:06.536Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}