{"id":"vidhyamitra:city-day:chitrakoot:1981-12-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/chitrakoot/1981-12-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-12-13","date_display":"December 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":12,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444951.770833,"kali_year":5083,"ahargana":1856486.2708,"sun":{"sidereal_longitude":236.9856,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":79.4444,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":17,"name":"Dvitīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvitīyā","elongation_degrees":202.4588,"elapsed_within_tithi_degrees":10.4588},"nakshatra":{"number":6,"name":"Ārdrā","pada":4,"moon_longitude":79.4444,"elapsed_within_degrees":12.7777},"yoga":{"number":24,"name":"Śukla","sum_longitude":316.43},"karana":{"half_tithi_index":33,"name":"Gara"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"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":12,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444951.770833,"ahargana":1856486.2708,"kali_year":5083,"ayanamsa_lahiri":23.6008,"grahas":{"sun":{"sidereal_longitude":237.34381999999994,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":81.00382000000002,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":1},"retrograde":false,"latitude":-1.162},"mars":{"sidereal_longitude":155.21101999999996,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":238.92941999999994,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":189.80251999999996,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false},"venus":{"sidereal_longitude":279.3609200000001,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":176.29422,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":94.4233,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":274.4233,"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":12,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444951.770833,"kali_year":5083,"ahargana":1856486.2708,"sun":{"sidereal_longitude":236.9856,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":79.4444,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":17,"name":"Dvitīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvitīyā","elongation_degrees":202.4588,"elapsed_within_tithi_degrees":10.4588},"nakshatra":{"number":6,"name":"Ārdrā","pada":4,"moon_longitude":79.4444,"elapsed_within_degrees":12.7777},"yoga":{"number":24,"name":"Śukla","sum_longitude":316.43},"karana":{"half_tithi_index":33,"name":"Gara"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-1.162,"elongation":157.541},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-1.162,"opposition_distance":22.459}},"eclipse_window_40days":[]},"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":"06:43","sunsetLocal":"17:18","solarNoonLocal":"12:01","dayLengthHours":10.589769357663897,"dayLengthDisplay":"10 Hours 35 Mins 23 Secs","nightLengthDisplay":"13 Hours 24 Mins 37 Secs","moonriseLocal":"18:47","moonsetLocal":"08:23","rahuKala":{"name":"Rāhu Kāla","start":"15:59","end":"17:18","startHours":15.980346004966993,"endHours":17.30406717467498,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:01","end":"13:20","startHours":12.009182495843032,"endHours":13.332903665551019,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"14:39","end":"15:59","startHours":14.656624835259006,"endHours":15.980346004966993,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:11","end":"09:32","startHours":9.185244000465993,"endHours":9.538236312388122,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:09","end":"07:26","startHours":7.155538206913745,"endHours":7.437932056451449,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:39","end":"12:22","startHours":11.656190183920902,"endHours":12.362174807765161,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:18","end":"06:00","startHours":5.302328569322563,"endHours":6.008313193166822,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:50","end":"06:43","startHours":5.831817037205758,"endHours":6.714297817011082,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:46","end":"14:29","startHours":13.77414405545368,"endHours":14.480128679297941,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:06","end":"17:30","startHours":17.10406717467498,"endHours":17.50406717467498,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:18","end":"17:45","startHours":17.30406717467498,"endHours":17.745307564577644,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:03","end":"18:48","startHours":17.05406717467498,"endHours":18.80406717467498,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:39","end":"00:22","startHours":23.656190183920902,"endHours":24.36217480776516,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:43","end":"08:02","startHours":6.714297817011082,"endHours":8.03801898671907,"quality":"inauspicious"},{"name":"Chala","start":"08:02","end":"09:22","startHours":8.03801898671907,"endHours":9.361740156427057,"quality":"neutral"},{"name":"Labha","start":"09:22","end":"10:41","startHours":9.361740156427057,"endHours":10.685461326135044,"quality":"auspicious"},{"name":"Amṛta","start":"10:41","end":"12:01","startHours":10.685461326135044,"endHours":12.009182495843032,"quality":"auspicious"},{"name":"Kāla","start":"12:01","end":"13:20","startHours":12.009182495843032,"endHours":13.332903665551019,"quality":"inauspicious"},{"name":"Śubha","start":"13:20","end":"14:39","startHours":13.332903665551019,"endHours":14.656624835259006,"quality":"auspicious"},{"name":"Roga","start":"14:39","end":"15:59","startHours":14.656624835259006,"endHours":15.980346004966993,"quality":"inauspicious"},{"name":"Udveg","start":"15:59","end":"17:18","startHours":15.980346004966993,"endHours":17.30406717467498,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"17:18","end":"18:59","startHours":17.30406717467498,"endHours":18.980346004966993,"quality":"auspicious"},{"name":"Roga","start":"18:59","end":"20:39","startHours":18.980346004966993,"endHours":20.656624835259006,"quality":"inauspicious"},{"name":"Udveg","start":"20:39","end":"22:20","startHours":20.656624835259006,"endHours":22.33290366555102,"quality":"inauspicious"},{"name":"Chala","start":"22:20","end":"00:01","startHours":22.33290366555102,"endHours":24.00918249584303,"quality":"neutral"},{"name":"Labha","start":"00:01","end":"01:41","startHours":24.00918249584303,"endHours":25.685461326135044,"quality":"auspicious"},{"name":"Amṛta","start":"01:41","end":"03:22","startHours":25.685461326135044,"endHours":27.361740156427057,"quality":"auspicious"},{"name":"Kāla","start":"03:22","end":"05:02","startHours":27.361740156427057,"endHours":29.03801898671907,"quality":"inauspicious"},{"name":"Śubha","start":"05:02","end":"06:43","startHours":29.03801898671907,"endHours":30.714297817011083,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:43","end":"07:43","startHours":6.714297817011082,"endHours":7.714297817011082,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:43","end":"08:43","startHours":7.714297817011082,"endHours":8.714297817011083,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:43","end":"09:43","startHours":8.714297817011083,"endHours":9.714297817011083,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:43","end":"10:43","startHours":9.714297817011083,"endHours":10.714297817011083,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:43","end":"11:43","startHours":10.714297817011083,"endHours":11.714297817011083,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:43","end":"12:43","startHours":11.714297817011083,"endHours":12.714297817011083,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:43","end":"13:43","startHours":12.714297817011083,"endHours":13.714297817011083,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:43","end":"14:43","startHours":13.714297817011083,"endHours":14.714297817011083,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:43","end":"15:43","startHours":14.714297817011083,"endHours":15.714297817011083,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:43","end":"16:43","startHours":15.714297817011083,"endHours":16.714297817011083,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:43","end":"17:43","startHours":16.714297817011083,"endHours":17.714297817011083,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:43","end":"18:43","startHours":17.714297817011083,"endHours":18.714297817011083,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:43","end":"19:43","startHours":18.714297817011083,"endHours":19.714297817011083,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:43","end":"20:43","startHours":19.714297817011083,"endHours":20.714297817011083,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:43","end":"21:43","startHours":20.714297817011083,"endHours":21.714297817011083,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:43","end":"22:43","startHours":21.714297817011083,"endHours":22.714297817011083,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:43","end":"23:43","startHours":22.714297817011083,"endHours":23.714297817011083,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:43","end":"00:43","startHours":23.714297817011083,"endHours":24.714297817011083,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:43","end":"01:43","startHours":24.714297817011083,"endHours":25.714297817011083,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:43","end":"02:43","startHours":25.714297817011083,"endHours":26.714297817011083,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:43","end":"03:43","startHours":26.714297817011083,"endHours":27.714297817011083,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:43","end":"04:43","startHours":27.714297817011083,"endHours":28.714297817011083,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:43","end":"05:43","startHours":28.714297817011083,"endHours":29.714297817011083,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:43","end":"06:43","startHours":29.714297817011083,"endHours":30.714297817011083,"planetary_lord":"Jupiter"}],"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","Mithuna","Siṃha","Vṛścika","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Karka","Kanyā","Tulā","Makara","Kumbha"]},"dishaShool":"West (Paścim)","chandraVasa":"South","rahuVasa":"North-East","anandadiYoga":{"name":"Dhvānkṣa","quality":"Inauspicious"},"tropicalRitu":"Hemanta (Pre-winter) (tropical)","vedicRitu":"Śarad (Autumn)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-23.12730302270558,"eotMinutes":5.090650249418121,"ayanamsa":23.6008}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Pauṣa","lunar_month_amanta":"Mārgaśīrṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Vṛścika (Kārttikai)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Kṛṣṇa Dvitīyā · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[],"todays_walk":{"walk":{"id":"surya-walk","name":"Sūrya Walk","name_sanskrit":"सूर्य यात्रा","type":"graha","description":"Self-illumination + BG 4.1 (Sun-lineage of Gītā transmission).","step_count":6,"url":"/walk/surya-walk"},"reason":"Ravivāra (Sunday) — its presiding graha's walk."},"cosmic_resonances":[]},"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 December 13, 1981 CE · Chitrakoot, Uttar Pradesh · Vidhyamitra","description":"December 13, 1981 CE for Chitrakoot, Uttar Pradesh: Kṛṣṇa Dvitīyā, sūryodaya 06:43, sūryāsta 17:18.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/chitrakoot/1981-12-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/chitrakoot/1981-12-13","sa":"https://sa.vidhyamitra.com/city/chitrakoot/1981-12-13","hi":"https://hi.vidhyamitra.com/city/chitrakoot/1981-12-13","x-default":"https://vidhyamitra.com/city/chitrakoot/1981-12-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T14:26:48.984Z","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":"2026-06-02T14:26:48.984Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T14:26:48.984Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}