{"id":"vidhyamitra:city-day:kozhikode:1981-10-17:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/kozhikode/1981-10-17","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-10-17","date_display":"October 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":10,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444894.770833,"kali_year":5083,"ahargana":1856429.2708,"sun":{"sidereal_longitude":179.3018,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":45.1454,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":225.8436,"elapsed_within_tithi_degrees":9.8436},"nakshatra":{"number":4,"name":"Rohiṇī","pada":2,"moon_longitude":45.1454,"elapsed_within_degrees":5.1454},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":224.4472},"karana":{"half_tithi_index":37,"name":"Bālava"},"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":1981,"month":10,"day":17,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444894.770833,"ahargana":1856429.2708,"kali_year":5083,"ayanamsa_lahiri":23.5987,"grahas":{"sun":{"sidereal_longitude":179.98769800000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":48.89519799999999,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":3},"retrograde":false,"latitude":-3.559},"mars":{"sidereal_longitude":124.27919800000001,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":183.57299799999998,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":4},"retrograde":true},"jupiter":{"sidereal_longitude":178.13579800000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":225.71159799999998,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":170.258198,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":97.4435,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":277.4435,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","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":10,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444894.770833,"kali_year":5083,"ahargana":1856429.2708,"sun":{"sidereal_longitude":179.3018,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":45.1454,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":225.8436,"elapsed_within_tithi_degrees":9.8436},"nakshatra":{"number":4,"name":"Rohiṇī","pada":2,"moon_longitude":45.1454,"elapsed_within_degrees":5.1454},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":224.4472},"karana":{"half_tithi_index":37,"name":"Bālava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.559,"elongation":134.156},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.559,"opposition_distance":45.844}},"eclipse_window_40days":[]},"city":{"slug":"kozhikode","name":"Kozhikode (Calicut), Kerala","lat":11.2588,"lon":75.7804,"tz_offset_hours":5.5,"state":"Kerala","country":"IN","tier":"tier-1"},"tier2":{"city":{"slug":"kozhikode","name":"Kozhikode (Calicut), Kerala","lat":11.2588,"lon":75.7804,"tz_offset_hours":5.5,"state":"Kerala","country":"IN","tier":"tier-1"},"sunriseLocal":"06:16","sunsetLocal":"18:08","solarNoonLocal":"12:12","dayLengthHours":11.869545306899262,"dayLengthDisplay":"11 Hours 52 Mins 10 Secs","nightLengthDisplay":"12 Hours 07 Mins 50 Secs","moonriseLocal":"21:06","moonsetLocal":"09:49","rahuKala":{"name":"Rāhu Kāla","start":"09:14","end":"10:43","startHours":9.22679668057472,"endHours":10.710489843937129,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:41","end":"15:10","startHours":13.677876170661943,"endHours":15.161569334024351,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"06:16","end":"07:45","startHours":6.259410353849905,"endHours":7.743103517212313,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:02","end":"09:25","startHours":9.028970925459733,"endHours":9.424622435689708,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:45","end":"07:04","startHours":6.753974741637374,"endHours":7.070495949821354,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:48","end":"12:35","startHours":11.798531497069561,"endHours":12.58983451752951,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:41","end":"05:28","startHours":4.676804312930003,"endHours":5.468107333389954,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:16","end":"06:16","startHours":5.270281578274966,"endHours":6.259410353849905,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:10","end":"14:58","startHours":14.172440558449413,"endHours":14.963743578909364,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:56","end":"18:20","startHours":17.928955660749168,"endHours":18.328955660749166,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:08","end":"18:37","startHours":18.128955660749167,"endHours":18.623520048536637,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:53","end":"19:38","startHours":17.878955660749167,"endHours":19.628955660749167,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:48","end":"00:35","startHours":23.79853149706956,"endHours":24.58983451752951,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"06:16","end":"07:45","startHours":6.259410353849905,"endHours":7.743103517212313,"quality":"inauspicious"},{"name":"Śubha","start":"07:45","end":"09:14","startHours":7.743103517212313,"endHours":9.22679668057472,"quality":"auspicious"},{"name":"Roga","start":"09:14","end":"10:43","startHours":9.22679668057472,"endHours":10.710489843937129,"quality":"inauspicious"},{"name":"Udveg","start":"10:43","end":"12:12","startHours":10.710489843937129,"endHours":12.194183007299536,"quality":"inauspicious"},{"name":"Chala","start":"12:12","end":"13:41","startHours":12.194183007299536,"endHours":13.677876170661943,"quality":"neutral"},{"name":"Labha","start":"13:41","end":"15:10","startHours":13.677876170661943,"endHours":15.161569334024351,"quality":"auspicious"},{"name":"Amṛta","start":"15:10","end":"16:39","startHours":15.161569334024351,"endHours":16.64526249738676,"quality":"auspicious"},{"name":"Kāla","start":"16:39","end":"18:08","startHours":16.64526249738676,"endHours":18.128955660749167,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"18:08","end":"19:39","startHours":18.128955660749167,"endHours":19.64526249738676,"quality":"auspicious"},{"name":"Amṛta","start":"19:39","end":"21:10","startHours":19.64526249738676,"endHours":21.16156933402435,"quality":"auspicious"},{"name":"Kāla","start":"21:10","end":"22:41","startHours":21.16156933402435,"endHours":22.677876170661943,"quality":"inauspicious"},{"name":"Śubha","start":"22:41","end":"00:12","startHours":22.677876170661943,"endHours":24.194183007299536,"quality":"auspicious"},{"name":"Roga","start":"00:12","end":"01:43","startHours":24.194183007299536,"endHours":25.71048984393713,"quality":"inauspicious"},{"name":"Udveg","start":"01:43","end":"03:14","startHours":25.71048984393713,"endHours":27.226796680574722,"quality":"inauspicious"},{"name":"Chala","start":"03:14","end":"04:45","startHours":27.226796680574722,"endHours":28.74310351721231,"quality":"neutral"},{"name":"Labha","start":"04:45","end":"06:16","startHours":28.74310351721231,"endHours":30.259410353849905,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:16","end":"07:16","startHours":6.259410353849905,"endHours":7.259410353849905,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"07:16","end":"08:16","startHours":7.259410353849905,"endHours":8.259410353849905,"planetary_lord":"Moon"},{"name":"Hora 3","start":"08:16","end":"09:16","startHours":8.259410353849905,"endHours":9.259410353849905,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"09:16","end":"10:16","startHours":9.259410353849905,"endHours":10.259410353849905,"planetary_lord":"Venus"},{"name":"Hora 5","start":"10:16","end":"11:16","startHours":10.259410353849905,"endHours":11.259410353849905,"planetary_lord":"Sun"},{"name":"Hora 6","start":"11:16","end":"12:16","startHours":11.259410353849905,"endHours":12.259410353849905,"planetary_lord":"Mars"},{"name":"Hora 7","start":"12:16","end":"13:16","startHours":12.259410353849905,"endHours":13.259410353849905,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"13:16","end":"14:16","startHours":13.259410353849905,"endHours":14.259410353849905,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"14:16","end":"15:16","startHours":14.259410353849905,"endHours":15.259410353849905,"planetary_lord":"Moon"},{"name":"Hora 10","start":"15:16","end":"16:16","startHours":15.259410353849905,"endHours":16.259410353849905,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"16:16","end":"17:16","startHours":16.259410353849905,"endHours":17.259410353849905,"planetary_lord":"Venus"},{"name":"Hora 12","start":"17:16","end":"18:16","startHours":17.259410353849905,"endHours":18.259410353849905,"planetary_lord":"Sun"},{"name":"Hora 13","start":"18:16","end":"19:16","startHours":18.259410353849905,"endHours":19.259410353849905,"planetary_lord":"Mars"},{"name":"Hora 14","start":"19:16","end":"20:16","startHours":19.259410353849905,"endHours":20.259410353849905,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"20:16","end":"21:16","startHours":20.259410353849905,"endHours":21.259410353849905,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"21:16","end":"22:16","startHours":21.259410353849905,"endHours":22.259410353849905,"planetary_lord":"Moon"},{"name":"Hora 17","start":"22:16","end":"23:16","startHours":22.259410353849905,"endHours":23.259410353849905,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"23:16","end":"00:16","startHours":23.259410353849905,"endHours":24.259410353849905,"planetary_lord":"Venus"},{"name":"Hora 19","start":"00:16","end":"01:16","startHours":24.259410353849905,"endHours":25.259410353849905,"planetary_lord":"Sun"},{"name":"Hora 20","start":"01:16","end":"02:16","startHours":25.259410353849905,"endHours":26.259410353849905,"planetary_lord":"Mars"},{"name":"Hora 21","start":"02:16","end":"03:16","startHours":26.259410353849905,"endHours":27.259410353849905,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"03:16","end":"04:16","startHours":27.259410353849905,"endHours":28.259410353849905,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"04:16","end":"05:16","startHours":28.259410353849905,"endHours":29.259410353849905,"planetary_lord":"Moon"},{"name":"Hora 24","start":"05:16","end":"06:16","startHours":29.259410353849905,"endHours":30.259410353849905,"planetary_lord":"Mercury"}],"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":["Vṛṣabha","Karka","Tulā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Siṃha","Kanyā","Dhanu","Makara"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-East","rahuVasa":"East","anandadiYoga":{"name":"Dhātṛ","quality":"Auspicious"},"tropicalRitu":"Śarad (Autumn) (tropical)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-9.157288544894131,"eotMinutes":15.227419562027912,"ayanamsa":23.5987}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Kārtika","lunar_month_paksha_full":"Kārtika Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Kārtika","lunar_month_amanta":"Āśvina","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Kārtika Kṛṣṇa Caturthī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"karva-chauth","name":"Karvā Chauth","name_sanskrit":"करवा चौथ","tradition":"Pan-Hindu","associated_deity":"Pārvatī + Gaṇeśa + Chandra","significance":"North Indian wives' fast for husband's longevity. Kṛṣṇa Caturthī of Kārtika.","vrata":true,"detection":{"tithi_number":19,"tithi_paksha":"Kṛṣṇa","lunar_month":"Kārtika"},"precedence":2},{"id":"tula-sankranti","name":"Tulā Saṅkrānti","name_sanskrit":"तुला सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Libra.","vrata":false,"detection":{"sun_rashi_ingress":"Tulā"},"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":"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":[{"historical_date":"-3226-07-09","event":"Bhagavān Krishna's birth at Mathurā","chart_id":"krishna","shared_marker":"same Rohiṇī","url":"/day/-3226-07-09","relevance":0.5}]},"validity":{"eternal":false,"location_specific":"kozhikode"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga October 17, 1981 CE · Kozhikode (Calicut), Kerala · Vidhyamitra","description":"October 17, 1981 CE for Kozhikode (Calicut), Kerala: Kṛṣṇa Caturthī, sūryodaya 06:16, sūryāsta 18:08.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/kozhikode/1981-10-17","hreflang_alternates":{"en":"https://vidhyamitra.com/city/kozhikode/1981-10-17","sa":"https://sa.vidhyamitra.com/city/kozhikode/1981-10-17","hi":"https://hi.vidhyamitra.com/city/kozhikode/1981-10-17","x-default":"https://vidhyamitra.com/city/kozhikode/1981-10-17"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T20:49:52.005Z","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":"2026-06-01T20:49:52.005Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T20:49:52.005Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}