{"id":"vidhyamitra:city-day:coimbatore:1981-08-17:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/coimbatore/1981-08-17","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-08-17","date_display":"August 17, 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":8,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444833.770833,"kali_year":5083,"ahargana":1856368.2708,"sun":{"sidereal_longitude":119.8828,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":316.0319,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":17,"name":"Dvitīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvitīyā","elongation_degrees":196.149,"elapsed_within_tithi_degrees":4.149},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3,"moon_longitude":316.0319,"elapsed_within_degrees":9.3652},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":75.9147},"karana":{"half_tithi_index":32,"name":"Taitila"},"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":1981,"month":8,"day":17,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444833.770833,"ahargana":1856368.2708,"kali_year":5083,"ayanamsa_lahiri":23.5963,"grahas":{"sun":{"sidereal_longitude":120.46202900000003,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":317.306729,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4},"retrograde":false,"latitude":-2.6022},"mars":{"sidereal_longitude":86.335329,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":127.63112899999999,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":165.54132900000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"venus":{"sidereal_longitude":154.83872900000006,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":163.15772900000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":100.6755,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":280.6755,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","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":1981,"month":8,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444833.770833,"kali_year":5083,"ahargana":1856368.2708,"sun":{"sidereal_longitude":119.8828,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":316.0319,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":17,"name":"Dvitīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvitīyā","elongation_degrees":196.149,"elapsed_within_tithi_degrees":4.149},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3,"moon_longitude":316.0319,"elapsed_within_degrees":9.3652},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":75.9147},"karana":{"half_tithi_index":32,"name":"Taitila"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.602,"elongation":163.851},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.602,"opposition_distance":16.149}},"eclipse_window_40days":[{"offset_days":-17,"type":"solar","occurs":true,"moon_latitude":0.181,"elongation":0.207}]},"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":"06:12","sunsetLocal":"18:40","solarNoonLocal":"12:26","dayLengthHours":12.473744727452134,"dayLengthDisplay":"12 Hours 28 Mins 25 Secs","nightLengthDisplay":"11 Hours 31 Mins 35 Secs","moonriseLocal":"19:37","moonsetLocal":"07:30","rahuKala":{"name":"Rāhu Kāla","start":"07:45","end":"09:19","startHours":7.754518753107415,"endHours":9.313736844038932,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:52","end":"12:26","startHours":10.872954934970448,"endHours":12.432173025901964,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:59","end":"15:33","startHours":13.991391116833482,"endHours":15.550609207764998,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:06","end":"09:31","startHours":9.105841098581395,"endHours":9.521632589496466,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:43","end":"07:03","startHours":6.715040025819737,"endHours":7.047673218551793,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:01","end":"12:51","startHours":12.016381534986895,"endHours":12.847964516817036,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:32","end":"05:22","startHours":4.5321346985156135,"endHours":5.363717680345755,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:09","end":"06:12","startHours":5.15582193488822,"endHours":6.195300662175898,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:31","end":"15:21","startHours":14.51113048047732,"endHours":15.342713462307461,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:28","end":"18:52","startHours":18.469045389628032,"endHours":18.86904538962803,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:40","end":"19:11","startHours":18.66904538962803,"endHours":19.18878475327187,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:25","end":"20:10","startHours":18.41904538962803,"endHours":20.16904538962803,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:01","end":"00:51","startHours":24.016381534986895,"endHours":24.84796451681704,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"06:12","end":"07:45","startHours":6.195300662175898,"endHours":7.754518753107415,"quality":"auspicious"},{"name":"Kāla","start":"07:45","end":"09:19","startHours":7.754518753107415,"endHours":9.313736844038932,"quality":"inauspicious"},{"name":"Śubha","start":"09:19","end":"10:52","startHours":9.313736844038932,"endHours":10.872954934970448,"quality":"auspicious"},{"name":"Roga","start":"10:52","end":"12:26","startHours":10.872954934970448,"endHours":12.432173025901964,"quality":"inauspicious"},{"name":"Udveg","start":"12:26","end":"13:59","startHours":12.432173025901964,"endHours":13.991391116833482,"quality":"inauspicious"},{"name":"Chala","start":"13:59","end":"15:33","startHours":13.991391116833482,"endHours":15.550609207764998,"quality":"neutral"},{"name":"Labha","start":"15:33","end":"17:07","startHours":15.550609207764998,"endHours":17.109827298696516,"quality":"auspicious"},{"name":"Amṛta","start":"17:07","end":"18:40","startHours":17.109827298696516,"endHours":18.66904538962803,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:40","end":"20:07","startHours":18.66904538962803,"endHours":20.109827298696516,"quality":"neutral"},{"name":"Labha","start":"20:07","end":"21:33","startHours":20.109827298696516,"endHours":21.550609207765,"quality":"auspicious"},{"name":"Amṛta","start":"21:33","end":"22:59","startHours":21.550609207765,"endHours":22.991391116833483,"quality":"auspicious"},{"name":"Kāla","start":"22:59","end":"00:26","startHours":22.991391116833483,"endHours":24.432173025901964,"quality":"inauspicious"},{"name":"Śubha","start":"00:26","end":"01:52","startHours":24.432173025901964,"endHours":25.872954934970448,"quality":"auspicious"},{"name":"Roga","start":"01:52","end":"03:19","startHours":25.872954934970448,"endHours":27.31373684403893,"quality":"inauspicious"},{"name":"Udveg","start":"03:19","end":"04:45","startHours":27.31373684403893,"endHours":28.754518753107412,"quality":"inauspicious"},{"name":"Chala","start":"04:45","end":"06:12","startHours":28.754518753107412,"endHours":30.195300662175896,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"06:12","end":"07:12","startHours":6.195300662175898,"endHours":7.195300662175898,"planetary_lord":"Moon"},{"name":"Hora 2","start":"07:12","end":"08:12","startHours":7.195300662175898,"endHours":8.195300662175898,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"08:12","end":"09:12","startHours":8.195300662175898,"endHours":9.195300662175898,"planetary_lord":"Venus"},{"name":"Hora 4","start":"09:12","end":"10:12","startHours":9.195300662175898,"endHours":10.195300662175898,"planetary_lord":"Sun"},{"name":"Hora 5","start":"10:12","end":"11:12","startHours":10.195300662175898,"endHours":11.195300662175898,"planetary_lord":"Mars"},{"name":"Hora 6","start":"11:12","end":"12:12","startHours":11.195300662175898,"endHours":12.195300662175898,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"12:12","end":"13:12","startHours":12.195300662175898,"endHours":13.195300662175898,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"13:12","end":"14:12","startHours":13.195300662175898,"endHours":14.195300662175898,"planetary_lord":"Moon"},{"name":"Hora 9","start":"14:12","end":"15:12","startHours":14.195300662175898,"endHours":15.195300662175898,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"15:12","end":"16:12","startHours":15.195300662175898,"endHours":16.195300662175896,"planetary_lord":"Venus"},{"name":"Hora 11","start":"16:12","end":"17:12","startHours":16.195300662175896,"endHours":17.195300662175896,"planetary_lord":"Sun"},{"name":"Hora 12","start":"17:12","end":"18:12","startHours":17.195300662175896,"endHours":18.195300662175896,"planetary_lord":"Mars"},{"name":"Hora 13","start":"18:12","end":"19:12","startHours":18.195300662175896,"endHours":19.195300662175896,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"19:12","end":"20:12","startHours":19.195300662175896,"endHours":20.195300662175896,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"20:12","end":"21:12","startHours":20.195300662175896,"endHours":21.195300662175896,"planetary_lord":"Moon"},{"name":"Hora 16","start":"21:12","end":"22:12","startHours":21.195300662175896,"endHours":22.195300662175896,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"22:12","end":"23:12","startHours":22.195300662175896,"endHours":23.195300662175896,"planetary_lord":"Venus"},{"name":"Hora 18","start":"23:12","end":"00:12","startHours":23.195300662175896,"endHours":24.195300662175896,"planetary_lord":"Sun"},{"name":"Hora 19","start":"00:12","end":"01:12","startHours":24.195300662175896,"endHours":25.195300662175896,"planetary_lord":"Mars"},{"name":"Hora 20","start":"01:12","end":"02:12","startHours":25.195300662175896,"endHours":26.195300662175896,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"02:12","end":"03:12","startHours":26.195300662175896,"endHours":27.195300662175896,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"03:12","end":"04:12","startHours":27.195300662175896,"endHours":28.195300662175896,"planetary_lord":"Moon"},{"name":"Hora 23","start":"04:12","end":"05:12","startHours":28.195300662175896,"endHours":29.195300662175896,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"05:12","end":"06:12","startHours":29.195300662175896,"endHours":30.195300662175896,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Punarvasu","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Uttara Phalgunī","Hasta","Citrā","Svātī","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Dhanu","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Makara","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"South","rahuVasa":"North-East","anandadiYoga":{"name":"Dhātṛ","quality":"Auspicious"},"tropicalRitu":"Varṣā (Monsoon)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":13.500484072613567,"eotMinutes":-3.7535815541179196,"ayanamsa":23.5963}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Bhādrapada","lunar_month_paksha_full":"Bhādrapada Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Bhādrapada","lunar_month_amanta":"Śrāvaṇa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Siṃha (Āvaṇi)","ritu":"Varṣā (Monsoon)","display_summary":"Bhādrapada Kṛṣṇa Dvitīyā · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"simha-sankranti","name":"Siṁha Saṅkrānti","name_sanskrit":"सिंह सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Leo.","vrata":false,"detection":{"sun_rashi_ingress":"Siṃha"},"precedence":5}],"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":[]},"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 August 17, 1981 CE · Coimbatore, Tamil Nadu · Vidhyamitra","description":"August 17, 1981 CE for Coimbatore, Tamil Nadu: Kṛṣṇa Dvitīyā, sūryodaya 06:12, sūryāsta 18:40.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/coimbatore/1981-08-17","hreflang_alternates":{"en":"https://vidhyamitra.com/city/coimbatore/1981-08-17","sa":"https://sa.vidhyamitra.com/city/coimbatore/1981-08-17","hi":"https://hi.vidhyamitra.com/city/coimbatore/1981-08-17","x-default":"https://vidhyamitra.com/city/coimbatore/1981-08-17"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T15:09:59.321Z","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":"2026-06-02T15:09:59.321Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T15:09:59.321Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}