{"id":"vidhyamitra:city-day:coimbatore:1981-02-22:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/coimbatore/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":"coimbatore","name":"Coimbatore, Tamil Nadu","lat":11.0168,"lon":76.9558,"tz_offset_hours":5.5,"state":"Tamil Nadu","country":"IN","tier":"tier-1"},"tier2":{"city":{"slug":"coimbatore","name":"Coimbatore, Tamil Nadu","lat":11.0168,"lon":76.9558,"tz_offset_hours":5.5,"state":"Tamil Nadu","country":"IN","tier":"tier-1"},"sunriseLocal":"06:41","sunsetLocal":"18:32","solarNoonLocal":"12:36","dayLengthHours":11.84518559873106,"dayLengthDisplay":"11 Hours 50 Mins 43 Secs","nightLengthDisplay":"12 Hours 09 Mins 17 Secs","moonriseLocal":"20:57","moonsetLocal":"08:57","rahuKala":{"name":"Rāhu Kāla","start":"17:03","end":"18:32","startHours":17.04630393210569,"endHours":18.526952131947073,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:36","end":"14:05","startHours":12.604359332581542,"endHours":14.085007532422924,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:34","end":"17:03","startHours":15.565655732264307,"endHours":17.04630393210569,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:27","end":"09:50","startHours":9.445643172919926,"endHours":9.840482692877629,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:11","end":"07:29","startHours":7.17531593316314,"endHours":7.491187549129302,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:13","end":"13:00","startHours":12.20951981262384,"endHours":12.999198852539246,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:06","end":"05:54","startHours":5.1024084533852045,"endHours":5.892087493300608,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:42","end":"06:41","startHours":5.694667733321757,"endHours":6.681766533216012,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:35","end":"15:22","startHours":14.578556932370052,"endHours":15.368235972285456,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:20","end":"18:44","startHours":18.326952131947074,"endHours":18.726952131947073,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:32","end":"19:01","startHours":18.526952131947073,"endHours":19.0205015318942,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:17","end":"20:02","startHours":18.276952131947073,"endHours":20.026952131947073,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:13","end":"01:00","startHours":24.209519812623842,"endHours":24.999198852539248,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:41","end":"08:10","startHours":6.681766533216012,"endHours":8.162414733057394,"quality":"inauspicious"},{"name":"Chala","start":"08:10","end":"09:39","startHours":8.162414733057394,"endHours":9.643062932898777,"quality":"neutral"},{"name":"Labha","start":"09:39","end":"11:07","startHours":9.643062932898777,"endHours":11.123711132740159,"quality":"auspicious"},{"name":"Amṛta","start":"11:07","end":"12:36","startHours":11.123711132740159,"endHours":12.604359332581542,"quality":"auspicious"},{"name":"Kāla","start":"12:36","end":"14:05","startHours":12.604359332581542,"endHours":14.085007532422924,"quality":"inauspicious"},{"name":"Śubha","start":"14:05","end":"15:34","startHours":14.085007532422924,"endHours":15.565655732264307,"quality":"auspicious"},{"name":"Roga","start":"15:34","end":"17:03","startHours":15.565655732264307,"endHours":17.04630393210569,"quality":"inauspicious"},{"name":"Udveg","start":"17:03","end":"18:32","startHours":17.04630393210569,"endHours":18.526952131947073,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:32","end":"20:03","startHours":18.526952131947073,"endHours":20.04630393210569,"quality":"auspicious"},{"name":"Roga","start":"20:03","end":"21:34","startHours":20.04630393210569,"endHours":21.565655732264307,"quality":"inauspicious"},{"name":"Udveg","start":"21:34","end":"23:05","startHours":21.565655732264307,"endHours":23.085007532422928,"quality":"inauspicious"},{"name":"Chala","start":"23:05","end":"00:36","startHours":23.085007532422928,"endHours":24.604359332581545,"quality":"neutral"},{"name":"Labha","start":"00:36","end":"02:07","startHours":24.604359332581545,"endHours":26.123711132740162,"quality":"auspicious"},{"name":"Amṛta","start":"02:07","end":"03:39","startHours":26.123711132740162,"endHours":27.64306293289878,"quality":"auspicious"},{"name":"Kāla","start":"03:39","end":"05:10","startHours":27.64306293289878,"endHours":29.162414733057396,"quality":"inauspicious"},{"name":"Śubha","start":"05:10","end":"06:41","startHours":29.162414733057396,"endHours":30.681766533216013,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:41","end":"07:41","startHours":6.681766533216012,"endHours":7.681766533216012,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:41","end":"08:41","startHours":7.681766533216012,"endHours":8.681766533216013,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:41","end":"09:41","startHours":8.681766533216013,"endHours":9.681766533216013,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:41","end":"10:41","startHours":9.681766533216013,"endHours":10.681766533216013,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:41","end":"11:41","startHours":10.681766533216013,"endHours":11.681766533216013,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:41","end":"12:41","startHours":11.681766533216013,"endHours":12.681766533216013,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:41","end":"13:41","startHours":12.681766533216013,"endHours":13.681766533216013,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:41","end":"14:41","startHours":13.681766533216013,"endHours":14.681766533216013,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:41","end":"15:41","startHours":14.681766533216013,"endHours":15.681766533216013,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:41","end":"16:41","startHours":15.681766533216013,"endHours":16.681766533216013,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:41","end":"17:41","startHours":16.681766533216013,"endHours":17.681766533216013,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:41","end":"18:41","startHours":17.681766533216013,"endHours":18.681766533216013,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:41","end":"19:41","startHours":18.681766533216013,"endHours":19.681766533216013,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:41","end":"20:41","startHours":19.681766533216013,"endHours":20.681766533216013,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:41","end":"21:41","startHours":20.681766533216013,"endHours":21.681766533216013,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:41","end":"22:41","startHours":21.681766533216013,"endHours":22.681766533216013,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:41","end":"23:41","startHours":22.681766533216013,"endHours":23.681766533216013,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:41","end":"00:41","startHours":23.681766533216013,"endHours":24.681766533216013,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:41","end":"01:41","startHours":24.681766533216013,"endHours":25.681766533216013,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:41","end":"02:41","startHours":25.681766533216013,"endHours":26.681766533216013,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:41","end":"03:41","startHours":26.681766533216013,"endHours":27.681766533216013,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:41","end":"04:41","startHours":27.681766533216013,"endHours":28.681766533216013,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:41","end":"05:41","startHours":28.681766533216013,"endHours":29.681766533216013,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:41","end":"06:41","startHours":29.681766533216013,"endHours":30.681766533216013,"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"},"tropicalRitu":"Śiśira (Winter) (tropical)","vedicRitu":"Śiśira (Winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","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","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Phālguna","lunar_month_amanta":"Māgha","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 Kṛṣṇa Caturthī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"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":"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":"coimbatore"},"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 · Coimbatore, Tamil Nadu · Vidhyamitra","description":"February 22, 1981 CE for Coimbatore, Tamil Nadu: Kṛṣṇa Caturthī, sūryodaya 06:41, sūryāsta 18:32.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/coimbatore/1981-02-22","hreflang_alternates":{"en":"https://vidhyamitra.com/city/coimbatore/1981-02-22","sa":"https://sa.vidhyamitra.com/city/coimbatore/1981-02-22","hi":"https://hi.vidhyamitra.com/city/coimbatore/1981-02-22","x-default":"https://vidhyamitra.com/city/coimbatore/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":"2026-06-02T20:58:02.827Z","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":"2026-06-02T20:58:02.827Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T20:58:02.827Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}