{"id":"vidhyamitra:city-day:kozhikode:1981-02-07:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/kozhikode/1981-02-07","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-02-07","date_display":"February 7, 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":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444642.770833,"kali_year":5082,"ahargana":1856177.2708,"sun":{"sidereal_longitude":294.6947,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":320.5973,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":3,"name":"Tṛtīyā","paksha":"Śukla","full_name":"Śukla Tṛtīyā","elongation_degrees":25.9026,"elapsed_within_tithi_degrees":1.9026},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1,"moon_longitude":320.5973,"elapsed_within_degrees":0.5973},"yoga":{"number":20,"name":"Śiva","sum_longitude":255.2919},"karana":{"half_tithi_index":4,"name":"Taitila"},"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":2,"day":7,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444642.770833,"ahargana":1856177.2708,"kali_year":5082,"ayanamsa_lahiri":23.589,"grahas":{"sun":{"sidereal_longitude":294.59372600000006,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":322.07792599999993,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1},"retrograde":false,"latitude":-2.2348},"mars":{"sidereal_longitude":306.78172599999994,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":311.448126,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":166.57802600000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":true},"venus":{"sidereal_longitude":280.18522600000006,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":165.64042599999993,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":110.7956,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":290.7956,"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":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444642.770833,"kali_year":5082,"ahargana":1856177.2708,"sun":{"sidereal_longitude":294.6947,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":320.5973,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":3,"name":"Tṛtīyā","paksha":"Śukla","full_name":"Śukla Tṛtīyā","elongation_degrees":25.9026,"elapsed_within_tithi_degrees":1.9026},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1,"moon_longitude":320.5973,"elapsed_within_degrees":0.5973},"yoga":{"number":20,"name":"Śiva","sum_longitude":255.2919},"karana":{"half_tithi_index":4,"name":"Taitila"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.235,"elongation":25.903},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.235,"opposition_distance":154.097}},"eclipse_window_40days":[{"offset_days":-18,"type":"lunar","occurs":true,"moon_latitude":-1.332,"opposition_distance":1.776},{"offset_days":-2,"type":"solar","occurs":true,"moon_latitude":-0.15,"elongation":0.162}]},"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":"06:50","sunsetLocal":"18:32","solarNoonLocal":"12:41","dayLengthHours":11.699091278686746,"dayLengthDisplay":"11 Hours 41 Mins 57 Secs","nightLengthDisplay":"12 Hours 18 Mins 03 Secs","moonriseLocal":"08:33","moonsetLocal":"20:29","rahuKala":{"name":"Rāhu Kāla","start":"09:46","end":"11:14","startHours":9.762828055484423,"endHours":11.225214465320267,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"14:09","end":"15:37","startHours":14.149987284991953,"endHours":15.612373694827797,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"06:50","end":"08:18","startHours":6.838055235812737,"endHours":8.300441645648581,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:34","end":"09:57","startHours":9.567843200839643,"endHours":9.957812910129203,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:20","end":"07:38","startHours":7.3255173724246845,"endHours":7.637493139856331,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:18","end":"13:05","startHours":12.297631165866553,"endHours":13.077570584445668,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:17","end":"06:03","startHours":5.278176398654504,"endHours":6.05811581723362,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:52","end":"06:50","startHours":5.8631309625888415,"endHours":6.838055235812737,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:38","end":"15:25","startHours":14.6374494216039,"endHours":15.417388840183017,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:20","end":"18:44","startHours":18.337146514499484,"endHours":18.737146514499482,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:32","end":"19:01","startHours":18.537146514499483,"endHours":19.024608651111432,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:17","end":"20:02","startHours":18.287146514499483,"endHours":20.037146514499483,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:18","end":"01:05","startHours":24.29763116586655,"endHours":25.07757058444567,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"06:50","end":"08:18","startHours":6.838055235812737,"endHours":8.300441645648581,"quality":"inauspicious"},{"name":"Śubha","start":"08:18","end":"09:46","startHours":8.300441645648581,"endHours":9.762828055484423,"quality":"auspicious"},{"name":"Roga","start":"09:46","end":"11:14","startHours":9.762828055484423,"endHours":11.225214465320267,"quality":"inauspicious"},{"name":"Udveg","start":"11:14","end":"12:41","startHours":11.225214465320267,"endHours":12.687600875156111,"quality":"inauspicious"},{"name":"Chala","start":"12:41","end":"14:09","startHours":12.687600875156111,"endHours":14.149987284991953,"quality":"neutral"},{"name":"Labha","start":"14:09","end":"15:37","startHours":14.149987284991953,"endHours":15.612373694827797,"quality":"auspicious"},{"name":"Amṛta","start":"15:37","end":"17:04","startHours":15.612373694827797,"endHours":17.07476010466364,"quality":"auspicious"},{"name":"Kāla","start":"17:04","end":"18:32","startHours":17.07476010466364,"endHours":18.537146514499483,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"18:32","end":"20:04","startHours":18.537146514499483,"endHours":20.07476010466364,"quality":"auspicious"},{"name":"Amṛta","start":"20:04","end":"21:37","startHours":20.07476010466364,"endHours":21.612373694827795,"quality":"auspicious"},{"name":"Kāla","start":"21:37","end":"23:09","startHours":21.612373694827795,"endHours":23.14998728499195,"quality":"inauspicious"},{"name":"Śubha","start":"23:09","end":"00:41","startHours":23.14998728499195,"endHours":24.68760087515611,"quality":"auspicious"},{"name":"Roga","start":"00:41","end":"02:14","startHours":24.68760087515611,"endHours":26.225214465320267,"quality":"inauspicious"},{"name":"Udveg","start":"02:14","end":"03:46","startHours":26.225214465320267,"endHours":27.762828055484423,"quality":"inauspicious"},{"name":"Chala","start":"03:46","end":"05:18","startHours":27.762828055484423,"endHours":29.300441645648583,"quality":"neutral"},{"name":"Labha","start":"05:18","end":"06:50","startHours":29.300441645648583,"endHours":30.83805523581274,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:50","end":"07:50","startHours":6.838055235812737,"endHours":7.838055235812737,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"07:50","end":"08:50","startHours":7.838055235812737,"endHours":8.838055235812737,"planetary_lord":"Moon"},{"name":"Hora 3","start":"08:50","end":"09:50","startHours":8.838055235812737,"endHours":9.838055235812737,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"09:50","end":"10:50","startHours":9.838055235812737,"endHours":10.838055235812737,"planetary_lord":"Venus"},{"name":"Hora 5","start":"10:50","end":"11:50","startHours":10.838055235812737,"endHours":11.838055235812737,"planetary_lord":"Sun"},{"name":"Hora 6","start":"11:50","end":"12:50","startHours":11.838055235812737,"endHours":12.838055235812737,"planetary_lord":"Mars"},{"name":"Hora 7","start":"12:50","end":"13:50","startHours":12.838055235812737,"endHours":13.838055235812737,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"13:50","end":"14:50","startHours":13.838055235812737,"endHours":14.838055235812737,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"14:50","end":"15:50","startHours":14.838055235812737,"endHours":15.838055235812737,"planetary_lord":"Moon"},{"name":"Hora 10","start":"15:50","end":"16:50","startHours":15.838055235812737,"endHours":16.83805523581274,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"16:50","end":"17:50","startHours":16.83805523581274,"endHours":17.83805523581274,"planetary_lord":"Venus"},{"name":"Hora 12","start":"17:50","end":"18:50","startHours":17.83805523581274,"endHours":18.83805523581274,"planetary_lord":"Sun"},{"name":"Hora 13","start":"18:50","end":"19:50","startHours":18.83805523581274,"endHours":19.83805523581274,"planetary_lord":"Mars"},{"name":"Hora 14","start":"19:50","end":"20:50","startHours":19.83805523581274,"endHours":20.83805523581274,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"20:50","end":"21:50","startHours":20.83805523581274,"endHours":21.83805523581274,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"21:50","end":"22:50","startHours":21.83805523581274,"endHours":22.83805523581274,"planetary_lord":"Moon"},{"name":"Hora 17","start":"22:50","end":"23:50","startHours":22.83805523581274,"endHours":23.83805523581274,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"23:50","end":"00:50","startHours":23.83805523581274,"endHours":24.83805523581274,"planetary_lord":"Venus"},{"name":"Hora 19","start":"00:50","end":"01:50","startHours":24.83805523581274,"endHours":25.83805523581274,"planetary_lord":"Sun"},{"name":"Hora 20","start":"01:50","end":"02:50","startHours":25.83805523581274,"endHours":26.83805523581274,"planetary_lord":"Mars"},{"name":"Hora 21","start":"02:50","end":"03:50","startHours":26.83805523581274,"endHours":27.83805523581274,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"03:50","end":"04:50","startHours":27.83805523581274,"endHours":28.83805523581274,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"04:50","end":"05:50","startHours":28.83805523581274,"endHours":29.83805523581274,"planetary_lord":"Moon"},{"name":"Hora 24","start":"05:50","end":"06:50","startHours":29.83805523581274,"endHours":30.83805523581274,"planetary_lord":"Mercury"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Hasta","Citrā","Svātī","Viśākhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"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":"East","anandadiYoga":{"name":"Amṛta","quality":"Auspicious"},"tropicalRitu":"Śiśira (Winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-15.378301108499002,"eotMinutes":-14.37765250936663,"ayanamsa":23.589}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Māgha","lunar_month_amanta":"Māgha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Tṛtīyā · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[],"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":[]},"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 February 7, 1981 CE · Kozhikode (Calicut), Kerala · Vidhyamitra","description":"February 7, 1981 CE for Kozhikode (Calicut), Kerala: Śukla Tṛtīyā, sūryodaya 06:50, sūryāsta 18:32.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/kozhikode/1981-02-07","hreflang_alternates":{"en":"https://vidhyamitra.com/city/kozhikode/1981-02-07","sa":"https://sa.vidhyamitra.com/city/kozhikode/1981-02-07","hi":"https://hi.vidhyamitra.com/city/kozhikode/1981-02-07","x-default":"https://vidhyamitra.com/city/kozhikode/1981-02-07"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T19:13:46.167Z","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":"2026-06-01T19:13:46.167Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T19:13:46.167Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}