{"id":"vidhyamitra:city-day:chitrakoot:1981-02-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/chitrakoot/1981-02-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-02-13","date_display":"February 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":2,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444648.770833,"kali_year":5082,"ahargana":1856183.2708,"sun":{"sidereal_longitude":300.7995,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":46.9078,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":9,"name":"Navamī","paksha":"Śukla","full_name":"Śukla Navamī","elongation_degrees":106.1083,"elapsed_within_tithi_degrees":10.1083},"nakshatra":{"number":4,"name":"Rohiṇī","pada":3,"moon_longitude":46.9078,"elapsed_within_degrees":6.9078},"yoga":{"number":27,"name":"Vaidhṛti","sum_longitude":347.7073},"karana":{"half_tithi_index":17,"name":"Kaulava"},"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":2,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444648.770833,"ahargana":1856183.2708,"kali_year":5082,"ayanamsa_lahiri":23.5892,"grahas":{"sun":{"sidereal_longitude":300.665397,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":47.53159699999998,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":3},"retrograde":false,"latitude":-4.0288},"mars":{"sidereal_longitude":311.520397,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":309.857297,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1},"retrograde":true},"jupiter":{"sidereal_longitude":166.274897,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":true},"venus":{"sidereal_longitude":287.696497,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":165.41189699999995,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":110.4777,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":290.4777,"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":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444648.770833,"kali_year":5082,"ahargana":1856183.2708,"sun":{"sidereal_longitude":300.7995,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":46.9078,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":9,"name":"Navamī","paksha":"Śukla","full_name":"Śukla Navamī","elongation_degrees":106.1083,"elapsed_within_tithi_degrees":10.1083},"nakshatra":{"number":4,"name":"Rohiṇī","pada":3,"moon_longitude":46.9078,"elapsed_within_degrees":6.9078},"yoga":{"number":27,"name":"Vaidhṛti","sum_longitude":347.7073},"karana":{"half_tithi_index":17,"name":"Kaulava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.029,"elongation":106.108},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.029,"opposition_distance":73.892}},"eclipse_window_40days":[{"offset_days":-8,"type":"solar","occurs":true,"moon_latitude":-0.15,"elongation":0.162}]},"city":{"slug":"chitrakoot","name":"Chitrakoot, Uttar Pradesh","lat":25.2051,"lon":81.0896,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"tier2":{"city":{"slug":"chitrakoot","name":"Chitrakoot, Uttar Pradesh","lat":25.2051,"lon":81.0896,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"sunriseLocal":"06:42","sunsetLocal":"17:58","solarNoonLocal":"12:20","dayLengthHours":11.26611535695611,"dayLengthDisplay":"11 Hours 15 Mins 58 Secs","nightLengthDisplay":"12 Hours 44 Mins 02 Secs","moonriseLocal":"12:41","moonsetLocal":"02:15","rahuKala":{"name":"Rāhu Kāla","start":"10:56","end":"12:20","startHours":10.929087668057521,"endHours":12.337352087677035,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:09","end":"16:34","startHours":15.153880926916063,"endHours":16.562145346535576,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:07","end":"09:31","startHours":8.112558828818493,"endHours":9.520823248438006,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:20","end":"09:43","startHours":9.333054659155405,"endHours":9.70859183772061,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:10","end":"07:28","startHours":7.173715882405484,"endHours":7.4741456252576475,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:58","end":"12:43","startHours":11.961814909111832,"endHours":12.712889266242238,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:12","end":"05:57","startHours":5.202145694938165,"endHours":5.9532200520685725,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:46","end":"06:42","startHours":5.76545146278597,"endHours":6.70429440919898,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:13","end":"14:58","startHours":14.215037980503054,"endHours":14.966112337633461,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:46","end":"18:10","startHours":17.77040976615509,"endHours":18.17040976615509,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:58","end":"18:26","startHours":17.97040976615509,"endHours":18.439831239361595,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:43","end":"19:28","startHours":17.72040976615509,"endHours":19.47040976615509,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:58","end":"00:43","startHours":23.96181490911183,"endHours":24.712889266242236,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"06:42","end":"08:07","startHours":6.70429440919898,"endHours":8.112558828818493,"quality":"neutral"},{"name":"Labha","start":"08:07","end":"09:31","startHours":8.112558828818493,"endHours":9.520823248438006,"quality":"auspicious"},{"name":"Amṛta","start":"09:31","end":"10:56","startHours":9.520823248438006,"endHours":10.929087668057521,"quality":"auspicious"},{"name":"Kāla","start":"10:56","end":"12:20","startHours":10.929087668057521,"endHours":12.337352087677035,"quality":"inauspicious"},{"name":"Śubha","start":"12:20","end":"13:45","startHours":12.337352087677035,"endHours":13.745616507296548,"quality":"auspicious"},{"name":"Roga","start":"13:45","end":"15:09","startHours":13.745616507296548,"endHours":15.153880926916063,"quality":"inauspicious"},{"name":"Udveg","start":"15:09","end":"16:34","startHours":15.153880926916063,"endHours":16.562145346535576,"quality":"inauspicious"},{"name":"Chala","start":"16:34","end":"17:58","startHours":16.562145346535576,"endHours":17.97040976615509,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"17:58","end":"19:34","startHours":17.97040976615509,"endHours":19.562145346535576,"quality":"inauspicious"},{"name":"Udveg","start":"19:34","end":"21:09","startHours":19.562145346535576,"endHours":21.153880926916063,"quality":"inauspicious"},{"name":"Chala","start":"21:09","end":"22:45","startHours":21.153880926916063,"endHours":22.745616507296546,"quality":"neutral"},{"name":"Labha","start":"22:45","end":"00:20","startHours":22.745616507296546,"endHours":24.337352087677033,"quality":"auspicious"},{"name":"Amṛta","start":"00:20","end":"01:56","startHours":24.337352087677033,"endHours":25.92908766805752,"quality":"auspicious"},{"name":"Kāla","start":"01:56","end":"03:31","startHours":25.92908766805752,"endHours":27.520823248438006,"quality":"inauspicious"},{"name":"Śubha","start":"03:31","end":"05:07","startHours":27.520823248438006,"endHours":29.112558828818493,"quality":"auspicious"},{"name":"Roga","start":"05:07","end":"06:42","startHours":29.112558828818493,"endHours":30.70429440919898,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:42","end":"07:42","startHours":6.70429440919898,"endHours":7.70429440919898,"planetary_lord":"Venus"},{"name":"Hora 2","start":"07:42","end":"08:42","startHours":7.70429440919898,"endHours":8.70429440919898,"planetary_lord":"Sun"},{"name":"Hora 3","start":"08:42","end":"09:42","startHours":8.70429440919898,"endHours":9.70429440919898,"planetary_lord":"Mars"},{"name":"Hora 4","start":"09:42","end":"10:42","startHours":9.70429440919898,"endHours":10.70429440919898,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"10:42","end":"11:42","startHours":10.70429440919898,"endHours":11.70429440919898,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"11:42","end":"12:42","startHours":11.70429440919898,"endHours":12.70429440919898,"planetary_lord":"Moon"},{"name":"Hora 7","start":"12:42","end":"13:42","startHours":12.70429440919898,"endHours":13.70429440919898,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"13:42","end":"14:42","startHours":13.70429440919898,"endHours":14.70429440919898,"planetary_lord":"Venus"},{"name":"Hora 9","start":"14:42","end":"15:42","startHours":14.70429440919898,"endHours":15.70429440919898,"planetary_lord":"Sun"},{"name":"Hora 10","start":"15:42","end":"16:42","startHours":15.70429440919898,"endHours":16.70429440919898,"planetary_lord":"Mars"},{"name":"Hora 11","start":"16:42","end":"17:42","startHours":16.70429440919898,"endHours":17.70429440919898,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"17:42","end":"18:42","startHours":17.70429440919898,"endHours":18.70429440919898,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"18:42","end":"19:42","startHours":18.70429440919898,"endHours":19.70429440919898,"planetary_lord":"Moon"},{"name":"Hora 14","start":"19:42","end":"20:42","startHours":19.70429440919898,"endHours":20.70429440919898,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"20:42","end":"21:42","startHours":20.70429440919898,"endHours":21.70429440919898,"planetary_lord":"Venus"},{"name":"Hora 16","start":"21:42","end":"22:42","startHours":21.70429440919898,"endHours":22.70429440919898,"planetary_lord":"Sun"},{"name":"Hora 17","start":"22:42","end":"23:42","startHours":22.70429440919898,"endHours":23.70429440919898,"planetary_lord":"Mars"},{"name":"Hora 18","start":"23:42","end":"00:42","startHours":23.70429440919898,"endHours":24.70429440919898,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"00:42","end":"01:42","startHours":24.70429440919898,"endHours":25.70429440919898,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"01:42","end":"02:42","startHours":25.70429440919898,"endHours":26.70429440919898,"planetary_lord":"Moon"},{"name":"Hora 21","start":"02:42","end":"03:42","startHours":26.70429440919898,"endHours":27.70429440919898,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"03:42","end":"04:42","startHours":27.70429440919898,"endHours":28.70429440919898,"planetary_lord":"Venus"},{"name":"Hora 23","start":"04:42","end":"05:42","startHours":28.70429440919898,"endHours":29.70429440919898,"planetary_lord":"Sun"},{"name":"Hora 24","start":"05:42","end":"06:42","startHours":29.70429440919898,"endHours":30.70429440919898,"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":"Śiśira (Winter)","vedicRitu":"Śiśira (Winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-13.435416079955456,"eotMinutes":-14.599525260622107,"ayanamsa":23.5892}},"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":"Kumbha (Māsi)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Navamī · 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},{"historical_date":"-1626101-04-03","event":"Bhagavān Rāma's birth at Ayodhyā","chart_id":"rama","shared_marker":"same Śukla Navamī","url":"/day/-1626101-04-03","relevance":0.5}]},"validity":{"eternal":false,"location_specific":"chitrakoot"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga February 13, 1981 CE · Chitrakoot, Uttar Pradesh · Vidhyamitra","description":"February 13, 1981 CE for Chitrakoot, Uttar Pradesh: Śukla Navamī, sūryodaya 06:42, sūryāsta 17:58.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/chitrakoot/1981-02-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/chitrakoot/1981-02-13","sa":"https://sa.vidhyamitra.com/city/chitrakoot/1981-02-13","hi":"https://hi.vidhyamitra.com/city/chitrakoot/1981-02-13","x-default":"https://vidhyamitra.com/city/chitrakoot/1981-02-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T19:47:57.950Z","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":"2026-06-02T19:47:57.950Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T19:47:57.950Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}