{"id":"vidhyamitra:city-day:coimbatore:1981-11-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/coimbatore/1981-11-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-11-13","date_display":"November 13, 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":11,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444921.770833,"kali_year":5083,"ahargana":1856456.2708,"sun":{"sidereal_longitude":206.3972,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":40.4409,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":17,"name":"Dvitīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvitīyā","elongation_degrees":194.0437,"elapsed_within_tithi_degrees":2.0437},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1,"moon_longitude":40.4409,"elapsed_within_degrees":0.4409},"yoga":{"number":19,"name":"Parigha","sum_longitude":246.8382},"karana":{"half_tithi_index":32,"name":"Taitila"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"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":11,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444921.770833,"ahargana":1856456.2708,"kali_year":5083,"ayanamsa_lahiri":23.5997,"grahas":{"sun":{"sidereal_longitude":206.97636599999998,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":42.709565999999995,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1},"retrograde":false,"latitude":-3.7105},"mars":{"sidereal_longitude":139.69316600000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":191.72836600000005,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":183.93696599999998,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":254.34896600000002,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":173.412866,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":96.0129,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":276.0129,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"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":11,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444921.770833,"kali_year":5083,"ahargana":1856456.2708,"sun":{"sidereal_longitude":206.3972,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":40.4409,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":17,"name":"Dvitīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvitīyā","elongation_degrees":194.0437,"elapsed_within_tithi_degrees":2.0437},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1,"moon_longitude":40.4409,"elapsed_within_degrees":0.4409},"yoga":{"number":19,"name":"Parigha","sum_longitude":246.8382},"karana":{"half_tithi_index":32,"name":"Taitila"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.711,"elongation":165.956},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.711,"opposition_distance":14.044}},"eclipse_window_40days":[]},"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":"06:18","sunsetLocal":"17:56","solarNoonLocal":"12:07","dayLengthHours":11.638593822056517,"dayLengthDisplay":"11 Hours 38 Mins 19 Secs","nightLengthDisplay":"12 Hours 21 Mins 41 Secs","moonriseLocal":"18:50","moonsetLocal":"07:30","rahuKala":{"name":"Rāhu Kāla","start":"10:40","end":"12:07","startHours":10.66045909200197,"endHours":12.115283319759035,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:01","end":"16:29","startHours":15.024931775273163,"endHours":16.47975600303023,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:45","end":"09:12","startHours":7.7508106364878415,"endHours":9.205634864244907,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:01","end":"09:24","startHours":9.011658300543964,"endHours":9.399611427945848,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:47","end":"07:05","startHours":6.780927817983131,"endHours":7.091290319904639,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:44","end":"12:30","startHours":11.727330192357151,"endHours":12.50323644716092,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:45","end":"05:31","startHours":4.744173899123241,"endHours":5.520080153927008,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:20","end":"06:18","startHours":5.326103590226067,"endHours":6.295986408730776,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:03","end":"14:50","startHours":14.055048956768456,"endHours":14.830955211572224,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:44","end":"18:08","startHours":17.734580230787294,"endHours":18.134580230787293,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:56","end":"18:25","startHours":17.934580230787294,"endHours":18.419521640039648,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:41","end":"19:26","startHours":17.684580230787294,"endHours":19.434580230787294,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:44","end":"00:30","startHours":23.727330192357154,"endHours":24.50323644716092,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"06:18","end":"07:45","startHours":6.295986408730776,"endHours":7.7508106364878415,"quality":"neutral"},{"name":"Labha","start":"07:45","end":"09:12","startHours":7.7508106364878415,"endHours":9.205634864244907,"quality":"auspicious"},{"name":"Amṛta","start":"09:12","end":"10:40","startHours":9.205634864244907,"endHours":10.66045909200197,"quality":"auspicious"},{"name":"Kāla","start":"10:40","end":"12:07","startHours":10.66045909200197,"endHours":12.115283319759035,"quality":"inauspicious"},{"name":"Śubha","start":"12:07","end":"13:34","startHours":12.115283319759035,"endHours":13.5701075475161,"quality":"auspicious"},{"name":"Roga","start":"13:34","end":"15:01","startHours":13.5701075475161,"endHours":15.024931775273163,"quality":"inauspicious"},{"name":"Udveg","start":"15:01","end":"16:29","startHours":15.024931775273163,"endHours":16.47975600303023,"quality":"inauspicious"},{"name":"Chala","start":"16:29","end":"17:56","startHours":16.47975600303023,"endHours":17.934580230787294,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"17:56","end":"19:29","startHours":17.934580230787294,"endHours":19.47975600303023,"quality":"inauspicious"},{"name":"Udveg","start":"19:29","end":"21:01","startHours":19.47975600303023,"endHours":21.024931775273163,"quality":"inauspicious"},{"name":"Chala","start":"21:01","end":"22:34","startHours":21.024931775273163,"endHours":22.570107547516102,"quality":"neutral"},{"name":"Labha","start":"22:34","end":"00:07","startHours":22.570107547516102,"endHours":24.115283319759037,"quality":"auspicious"},{"name":"Amṛta","start":"00:07","end":"01:40","startHours":24.115283319759037,"endHours":25.66045909200197,"quality":"auspicious"},{"name":"Kāla","start":"01:40","end":"03:12","startHours":25.66045909200197,"endHours":27.205634864244907,"quality":"inauspicious"},{"name":"Śubha","start":"03:12","end":"04:45","startHours":27.205634864244907,"endHours":28.75081063648784,"quality":"auspicious"},{"name":"Roga","start":"04:45","end":"06:18","startHours":28.75081063648784,"endHours":30.295986408730776,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:18","end":"07:18","startHours":6.295986408730776,"endHours":7.295986408730776,"planetary_lord":"Venus"},{"name":"Hora 2","start":"07:18","end":"08:18","startHours":7.295986408730776,"endHours":8.295986408730776,"planetary_lord":"Sun"},{"name":"Hora 3","start":"08:18","end":"09:18","startHours":8.295986408730776,"endHours":9.295986408730776,"planetary_lord":"Mars"},{"name":"Hora 4","start":"09:18","end":"10:18","startHours":9.295986408730776,"endHours":10.295986408730776,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"10:18","end":"11:18","startHours":10.295986408730776,"endHours":11.295986408730776,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"11:18","end":"12:18","startHours":11.295986408730776,"endHours":12.295986408730776,"planetary_lord":"Moon"},{"name":"Hora 7","start":"12:18","end":"13:18","startHours":12.295986408730776,"endHours":13.295986408730776,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"13:18","end":"14:18","startHours":13.295986408730776,"endHours":14.295986408730776,"planetary_lord":"Venus"},{"name":"Hora 9","start":"14:18","end":"15:18","startHours":14.295986408730776,"endHours":15.295986408730776,"planetary_lord":"Sun"},{"name":"Hora 10","start":"15:18","end":"16:18","startHours":15.295986408730776,"endHours":16.295986408730776,"planetary_lord":"Mars"},{"name":"Hora 11","start":"16:18","end":"17:18","startHours":16.295986408730776,"endHours":17.295986408730776,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"17:18","end":"18:18","startHours":17.295986408730776,"endHours":18.295986408730776,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"18:18","end":"19:18","startHours":18.295986408730776,"endHours":19.295986408730776,"planetary_lord":"Moon"},{"name":"Hora 14","start":"19:18","end":"20:18","startHours":19.295986408730776,"endHours":20.295986408730776,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"20:18","end":"21:18","startHours":20.295986408730776,"endHours":21.295986408730776,"planetary_lord":"Venus"},{"name":"Hora 16","start":"21:18","end":"22:18","startHours":21.295986408730776,"endHours":22.295986408730776,"planetary_lord":"Sun"},{"name":"Hora 17","start":"22:18","end":"23:18","startHours":22.295986408730776,"endHours":23.295986408730776,"planetary_lord":"Mars"},{"name":"Hora 18","start":"23:18","end":"00:18","startHours":23.295986408730776,"endHours":24.295986408730776,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"00:18","end":"01:18","startHours":24.295986408730776,"endHours":25.295986408730776,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"01:18","end":"02:18","startHours":25.295986408730776,"endHours":26.295986408730776,"planetary_lord":"Moon"},{"name":"Hora 21","start":"02:18","end":"03:18","startHours":26.295986408730776,"endHours":27.295986408730776,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"03:18","end":"04:18","startHours":27.295986408730776,"endHours":28.295986408730776,"planetary_lord":"Venus"},{"name":"Hora 23","start":"04:18","end":"05:18","startHours":28.295986408730776,"endHours":29.295986408730776,"planetary_lord":"Sun"},{"name":"Hora 24","start":"05:18","end":"06:18","startHours":29.295986408730776,"endHours":30.295986408730776,"planetary_lord":"Mars"}],"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":"West (Paścim)","chandraVasa":"South-East","rahuVasa":"South-East","anandadiYoga":{"name":"Mātaṇga","quality":"Auspicious"},"tropicalRitu":"Śarad (Autumn) (tropical)","vedicRitu":"Śarad (Autumn)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-17.892722228134833,"eotMinutes":15.25980081445791,"ayanamsa":23.5997}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Mārgaśīrṣa","lunar_month_paksha_full":"Mārgaśīrṣa Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Mārgaśīrṣa","lunar_month_amanta":"Kārtika","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Tulā (Aippasi)","ritu":"Hemanta (Pre-winter)","display_summary":"Mārgaśīrṣa Kṛṣṇa Dvitīyā · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[],"todays_walk":{"walk":{"id":"shukra-walk","name":"Śukra Walk","name_sanskrit":"शुक्र यात्रा","type":"graha","description":"Beauty + creativity in dharma + BG 10.36.","step_count":5,"url":"/walk/shukra-walk"},"reason":"Śukravāra (Friday) — 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":"coimbatore"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga November 13, 1981 CE · Coimbatore, Tamil Nadu · Vidhyamitra","description":"November 13, 1981 CE for Coimbatore, Tamil Nadu: Kṛṣṇa Dvitīyā, sūryodaya 06:18, sūryāsta 17:56.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/coimbatore/1981-11-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/coimbatore/1981-11-13","sa":"https://sa.vidhyamitra.com/city/coimbatore/1981-11-13","hi":"https://hi.vidhyamitra.com/city/coimbatore/1981-11-13","x-default":"https://vidhyamitra.com/city/coimbatore/1981-11-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-03T01:24:35.294Z","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":"2026-06-03T01:24:35.294Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-03T01:24:35.294Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}