{"id":"vidhyamitra:city-day:rishikesh:1981-02-22:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1981-02-22","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-02-22","date_display":"February 22, 1981 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":1981,"month":2,"day":22,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444657.770833,"kali_year":5082,"ahargana":1856192.2708,"sun":{"sidereal_longitude":309.9203,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":167.8091,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":217.8888,"elapsed_within_tithi_degrees":1.8888},"nakshatra":{"number":13,"name":"Hasta","pada":3,"moon_longitude":167.8091,"elapsed_within_degrees":7.8091},"yoga":{"number":9,"name":"Śūla","sum_longitude":117.7295},"karana":{"half_tithi_index":36,"name":"Bava"},"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":1981,"month":2,"day":22,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444657.770833,"ahargana":1856192.2708,"kali_year":5082,"ayanamsa_lahiri":23.5896,"grahas":{"sun":{"sidereal_longitude":309.745553,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":164.92835300000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false,"latitude":3.8071},"mars":{"sidereal_longitude":318.615953,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":300.509453,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":true},"jupiter":{"sidereal_longitude":165.62705299999993,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":true},"venus":{"sidereal_longitude":298.955553,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":164.96835299999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":110.0009,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":290.0009,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","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":1981,"month":2,"day":22,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444657.770833,"kali_year":5082,"ahargana":1856192.2708,"sun":{"sidereal_longitude":309.9203,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":167.8091,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":217.8888,"elapsed_within_tithi_degrees":1.8888},"nakshatra":{"number":13,"name":"Hasta","pada":3,"moon_longitude":167.8091,"elapsed_within_degrees":7.8091},"yoga":{"number":9,"name":"Śūla","sum_longitude":117.7295},"karana":{"half_tithi_index":36,"name":"Bava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.807,"elongation":142.111},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.807,"opposition_distance":37.889}},"eclipse_window_40days":[{"offset_days":-17,"type":"solar","occurs":true,"moon_latitude":-0.15,"elongation":0.162}]},"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":"06:51","sunsetLocal":"18:11","solarNoonLocal":"12:31","dayLengthHours":11.326670100979069,"dayLengthDisplay":"11 Hours 19 Mins 36 Secs","nightLengthDisplay":"12 Hours 40 Mins 24 Secs","moonriseLocal":"20:57","moonsetLocal":"08:47","rahuKala":{"name":"Rāhu Kāla","start":"16:46","end":"18:11","startHours":16.76440728711536,"endHours":18.180241049737745,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:31","end":"13:56","startHours":12.516905999248213,"endHours":13.932739761870597,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:21","end":"16:46","startHours":15.348573524492977,"endHours":16.76440728711536,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:30","end":"09:52","startHours":9.496460638987127,"endHours":9.874016309019762,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:20","end":"07:38","startHours":7.325515536299472,"endHours":7.62756007232558,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:08","end":"12:54","startHours":12.139350329215576,"endHours":12.894461669280846,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:21","end":"06:06","startHours":5.343348268628135,"endHours":6.098459608693406,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:55","end":"06:51","startHours":5.909681773677089,"endHours":6.853570948758677,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:24","end":"15:10","startHours":14.40468434941139,"endHours":15.159795689476661,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:59","end":"18:23","startHours":17.980241049737746,"endHours":18.380241049737744,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:11","end":"18:39","startHours":18.180241049737745,"endHours":18.65218563727854,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:56","end":"19:41","startHours":17.930241049737745,"endHours":19.680241049737745,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:08","end":"00:54","startHours":24.139350329215574,"endHours":24.894461669280844,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:51","end":"08:16","startHours":6.853570948758677,"endHours":8.26940471138106,"quality":"inauspicious"},{"name":"Chala","start":"08:16","end":"09:41","startHours":8.26940471138106,"endHours":9.685238474003445,"quality":"neutral"},{"name":"Labha","start":"09:41","end":"11:06","startHours":9.685238474003445,"endHours":11.101072236625829,"quality":"auspicious"},{"name":"Amṛta","start":"11:06","end":"12:31","startHours":11.101072236625829,"endHours":12.516905999248213,"quality":"auspicious"},{"name":"Kāla","start":"12:31","end":"13:56","startHours":12.516905999248213,"endHours":13.932739761870597,"quality":"inauspicious"},{"name":"Śubha","start":"13:56","end":"15:21","startHours":13.932739761870597,"endHours":15.348573524492977,"quality":"auspicious"},{"name":"Roga","start":"15:21","end":"16:46","startHours":15.348573524492977,"endHours":16.76440728711536,"quality":"inauspicious"},{"name":"Udveg","start":"16:46","end":"18:11","startHours":16.76440728711536,"endHours":18.180241049737745,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:11","end":"19:46","startHours":18.180241049737745,"endHours":19.76440728711536,"quality":"auspicious"},{"name":"Roga","start":"19:46","end":"21:21","startHours":19.76440728711536,"endHours":21.348573524492977,"quality":"inauspicious"},{"name":"Udveg","start":"21:21","end":"22:56","startHours":21.348573524492977,"endHours":22.932739761870593,"quality":"inauspicious"},{"name":"Chala","start":"22:56","end":"00:31","startHours":22.932739761870593,"endHours":24.51690599924821,"quality":"neutral"},{"name":"Labha","start":"00:31","end":"02:06","startHours":24.51690599924821,"endHours":26.101072236625825,"quality":"auspicious"},{"name":"Amṛta","start":"02:06","end":"03:41","startHours":26.101072236625825,"endHours":27.685238474003445,"quality":"auspicious"},{"name":"Kāla","start":"03:41","end":"05:16","startHours":27.685238474003445,"endHours":29.26940471138106,"quality":"inauspicious"},{"name":"Śubha","start":"05:16","end":"06:51","startHours":29.26940471138106,"endHours":30.853570948758676,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:51","end":"07:51","startHours":6.853570948758677,"endHours":7.853570948758677,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:51","end":"08:51","startHours":7.853570948758677,"endHours":8.853570948758676,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:51","end":"09:51","startHours":8.853570948758676,"endHours":9.853570948758676,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:51","end":"10:51","startHours":9.853570948758676,"endHours":10.853570948758676,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:51","end":"11:51","startHours":10.853570948758676,"endHours":11.853570948758676,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:51","end":"12:51","startHours":11.853570948758676,"endHours":12.853570948758676,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:51","end":"13:51","startHours":12.853570948758676,"endHours":13.853570948758676,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:51","end":"14:51","startHours":13.853570948758676,"endHours":14.853570948758676,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:51","end":"15:51","startHours":14.853570948758676,"endHours":15.853570948758676,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:51","end":"16:51","startHours":15.853570948758676,"endHours":16.853570948758676,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:51","end":"17:51","startHours":16.853570948758676,"endHours":17.853570948758676,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:51","end":"18:51","startHours":17.853570948758676,"endHours":18.853570948758676,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:51","end":"19:51","startHours":18.853570948758676,"endHours":19.853570948758676,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:51","end":"20:51","startHours":19.853570948758676,"endHours":20.853570948758676,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:51","end":"21:51","startHours":20.853570948758676,"endHours":21.853570948758676,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:51","end":"22:51","startHours":21.853570948758676,"endHours":22.853570948758676,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:51","end":"23:51","startHours":22.853570948758676,"endHours":23.853570948758676,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:51","end":"00:51","startHours":23.853570948758676,"endHours":24.853570948758676,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:51","end":"01:51","startHours":24.853570948758676,"endHours":25.853570948758676,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:51","end":"02:51","startHours":25.853570948758676,"endHours":26.853570948758676,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:51","end":"03:51","startHours":26.853570948758676,"endHours":27.853570948758676,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:51","end":"04:51","startHours":27.853570948758676,"endHours":28.853570948758676,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:51","end":"05:51","startHours":28.853570948758676,"endHours":29.853570948758676,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:51","end":"06:51","startHours":29.853570948758676,"endHours":30.853570948758676,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Citrā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Mithuna","Karka","Kanyā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Tulā","Dhanu","Makara"]},"dishaShool":"West (Paścim)","chandraVasa":"North-West","rahuVasa":"North-East","anandadiYoga":{"name":"Mānasa","quality":"Auspicious"},"drikRitu":"Śiśira (Winter) (Drik)","vedicRitu":"Śiśira (Winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-10.281860517491355,"eotMinutes":-14.08475995489261,"ayanamsa":23.5896}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Phālguna","lunar_month_paksha_full":"Phālguna Kṛṣṇa Pakṣa","solar_month":"Kumbha (Māsi)","ritu":"Śiśira (Winter)","display_summary":"Phālguna Kṛṣṇa Caturthī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"kumbha-sankranti","name":"Kumbha Saṅkrānti","name_sanskrit":"कुम्भ सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Aquarius; Kumbha-māsa begins.","vrata":false,"detection":{"sun_rashi":"Kumbha"},"precedence":5},{"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":"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 February 22, 1981 CE · Ṛṣikeśa · Vidhyamitra","description":"February 22, 1981 CE for Ṛṣikeśa: Kṛṣṇa Caturthī, sūryodaya 06:51, sūryāsta 18:11.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1981-02-22","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1981-02-22","sa":"https://sa.vidhyamitra.com/city/rishikesh/1981-02-22","hi":"https://hi.vidhyamitra.com/city/rishikesh/1981-02-22","x-default":"https://vidhyamitra.com/city/rishikesh/1981-02-22"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-19T01:33:52.084Z","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":"2026-05-19T01:33:52.084Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-19T01:33:52.084Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}