{"id":"vidhyamitra:city-day:dwarka:2173-12-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/dwarka/2173-12-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2173-12-13","date_display":"December 13, 2173 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":2173,"month":12,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2515078.770833,"kali_year":5275,"ahargana":1926613.2708,"sun":{"sidereal_longitude":234.2371,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":337.4198,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":9,"name":"Navamī","paksha":"Śukla","full_name":"Śukla Navamī","elongation_degrees":103.1827,"elapsed_within_tithi_degrees":7.1827},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2,"moon_longitude":337.4198,"elapsed_within_degrees":4.0865},"yoga":{"number":16,"name":"Siddhi","sum_longitude":211.6569},"karana":{"half_tithi_index":17,"name":"Kaulava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"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":2173,"month":12,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2515078.770833,"ahargana":1926613.2708,"kali_year":5275,"ayanamsa_lahiri":26.2829,"grahas":{"sun":{"sidereal_longitude":235.07365299999992,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":339.748853,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2},"retrograde":false,"latitude":-0.1049},"mars":{"sidereal_longitude":171.91675299999997,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":247.85765300000003,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":240.41855299999997,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":false},"venus":{"sidereal_longitude":205.34185300000001,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":339.097353,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":338.7574,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":158.7574,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","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":2173,"month":12,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2515078.770833,"kali_year":5275,"ahargana":1926613.2708,"sun":{"sidereal_longitude":234.2371,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":337.4198,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":9,"name":"Navamī","paksha":"Śukla","full_name":"Śukla Navamī","elongation_degrees":103.1827,"elapsed_within_tithi_degrees":7.1827},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2,"moon_longitude":337.4198,"elapsed_within_degrees":4.0865},"yoga":{"number":16,"name":"Siddhi","sum_longitude":211.6569},"karana":{"half_tithi_index":17,"name":"Kaulava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.105,"elongation":103.183},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.105,"opposition_distance":76.817}},"eclipse_window_40days":[]},"city":{"slug":"dwarka","name":"Dvārakā","lat":22.2393,"lon":68.9686,"tz_offset_hours":5.5,"state":"Gujarat","country":"IN","tier":"tirtha"},"tier2":{"city":{"slug":"dwarka","name":"Dvārakā","lat":22.2393,"lon":68.9686,"tz_offset_hours":5.5,"state":"Gujarat","country":"IN","tier":"tirtha"},"sunriseLocal":"07:25","sunsetLocal":"18:13","solarNoonLocal":"12:49","dayLengthHours":10.789539570498246,"dayLengthDisplay":"10 Hours 47 Mins 22 Secs","nightLengthDisplay":"13 Hours 12 Mins 38 Secs","moonriseLocal":"13:41","moonsetLocal":"01:54","rahuKala":{"name":"Rāhu Kāla","start":"08:46","end":"10:07","startHours":8.771171823572857,"endHours":10.119864269885138,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"11:28","end":"12:49","startHours":11.46855671619742,"endHours":12.8172491625097,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"14:10","end":"15:31","startHours":14.165941608821981,"endHours":15.514634055134259,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:56","end":"10:18","startHours":9.940038610376835,"endHours":10.299689929393441,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:52","end":"08:10","startHours":7.872043526031337,"endHours":8.159764581244623,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:27","end":"13:11","startHours":12.45759784349309,"endHours":13.176900481526307,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:59","end":"06:42","startHours":5.983874101194144,"endHours":6.70317673922736,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:31","end":"07:25","startHours":6.523351079719056,"endHours":7.422479377260577,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:37","end":"15:20","startHours":14.61550575759274,"endHours":15.334808395625956,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:01","end":"18:25","startHours":18.012018947758822,"endHours":18.41201894775882,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:13","end":"18:40","startHours":18.21201894775882,"endHours":18.661583096529583,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:58","end":"19:43","startHours":17.96201894775882,"endHours":19.71201894775882,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:27","end":"01:11","startHours":24.45759784349309,"endHours":25.176900481526303,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"07:25","end":"08:46","startHours":7.422479377260577,"endHours":8.771171823572857,"quality":"auspicious"},{"name":"Kāla","start":"08:46","end":"10:07","startHours":8.771171823572857,"endHours":10.119864269885138,"quality":"inauspicious"},{"name":"Śubha","start":"10:07","end":"11:28","startHours":10.119864269885138,"endHours":11.46855671619742,"quality":"auspicious"},{"name":"Roga","start":"11:28","end":"12:49","startHours":11.46855671619742,"endHours":12.8172491625097,"quality":"inauspicious"},{"name":"Udveg","start":"12:49","end":"14:10","startHours":12.8172491625097,"endHours":14.165941608821981,"quality":"inauspicious"},{"name":"Chala","start":"14:10","end":"15:31","startHours":14.165941608821981,"endHours":15.514634055134259,"quality":"neutral"},{"name":"Labha","start":"15:31","end":"16:52","startHours":15.514634055134259,"endHours":16.86332650144654,"quality":"auspicious"},{"name":"Amṛta","start":"16:52","end":"18:13","startHours":16.86332650144654,"endHours":18.21201894775882,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:13","end":"19:52","startHours":18.21201894775882,"endHours":19.86332650144654,"quality":"neutral"},{"name":"Labha","start":"19:52","end":"21:31","startHours":19.86332650144654,"endHours":21.51463405513426,"quality":"auspicious"},{"name":"Amṛta","start":"21:31","end":"23:10","startHours":21.51463405513426,"endHours":23.16594160882198,"quality":"auspicious"},{"name":"Kāla","start":"23:10","end":"00:49","startHours":23.16594160882198,"endHours":24.817249162509697,"quality":"inauspicious"},{"name":"Śubha","start":"00:49","end":"02:28","startHours":24.817249162509697,"endHours":26.46855671619742,"quality":"auspicious"},{"name":"Roga","start":"02:28","end":"04:07","startHours":26.46855671619742,"endHours":28.119864269885138,"quality":"inauspicious"},{"name":"Udveg","start":"04:07","end":"05:46","startHours":28.119864269885138,"endHours":29.771171823572857,"quality":"inauspicious"},{"name":"Chala","start":"05:46","end":"07:25","startHours":29.771171823572857,"endHours":31.422479377260576,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"07:25","end":"08:25","startHours":7.422479377260577,"endHours":8.422479377260576,"planetary_lord":"Moon"},{"name":"Hora 2","start":"08:25","end":"09:25","startHours":8.422479377260576,"endHours":9.422479377260576,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"09:25","end":"10:25","startHours":9.422479377260576,"endHours":10.422479377260576,"planetary_lord":"Venus"},{"name":"Hora 4","start":"10:25","end":"11:25","startHours":10.422479377260576,"endHours":11.422479377260576,"planetary_lord":"Sun"},{"name":"Hora 5","start":"11:25","end":"12:25","startHours":11.422479377260576,"endHours":12.422479377260576,"planetary_lord":"Mars"},{"name":"Hora 6","start":"12:25","end":"13:25","startHours":12.422479377260576,"endHours":13.422479377260576,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"13:25","end":"14:25","startHours":13.422479377260576,"endHours":14.422479377260576,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"14:25","end":"15:25","startHours":14.422479377260576,"endHours":15.422479377260576,"planetary_lord":"Moon"},{"name":"Hora 9","start":"15:25","end":"16:25","startHours":15.422479377260576,"endHours":16.422479377260576,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"16:25","end":"17:25","startHours":16.422479377260576,"endHours":17.422479377260576,"planetary_lord":"Venus"},{"name":"Hora 11","start":"17:25","end":"18:25","startHours":17.422479377260576,"endHours":18.422479377260576,"planetary_lord":"Sun"},{"name":"Hora 12","start":"18:25","end":"19:25","startHours":18.422479377260576,"endHours":19.422479377260576,"planetary_lord":"Mars"},{"name":"Hora 13","start":"19:25","end":"20:25","startHours":19.422479377260576,"endHours":20.422479377260576,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"20:25","end":"21:25","startHours":20.422479377260576,"endHours":21.422479377260576,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"21:25","end":"22:25","startHours":21.422479377260576,"endHours":22.422479377260576,"planetary_lord":"Moon"},{"name":"Hora 16","start":"22:25","end":"23:25","startHours":22.422479377260576,"endHours":23.422479377260576,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"23:25","end":"00:25","startHours":23.422479377260576,"endHours":24.422479377260576,"planetary_lord":"Venus"},{"name":"Hora 18","start":"00:25","end":"01:25","startHours":24.422479377260576,"endHours":25.422479377260576,"planetary_lord":"Sun"},{"name":"Hora 19","start":"01:25","end":"02:25","startHours":25.422479377260576,"endHours":26.422479377260576,"planetary_lord":"Mars"},{"name":"Hora 20","start":"02:25","end":"03:25","startHours":26.422479377260576,"endHours":27.422479377260576,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"03:25","end":"04:25","startHours":27.422479377260576,"endHours":28.422479377260576,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"04:25","end":"05:25","startHours":28.422479377260576,"endHours":29.422479377260576,"planetary_lord":"Moon"},{"name":"Hora 23","start":"05:25","end":"06:25","startHours":29.422479377260576,"endHours":30.422479377260576,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"06:25","end":"07:25","startHours":30.422479377260576,"endHours":31.422479377260576,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Revatī"],"unfavorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Citrā","Svātī","Viśākhā","Anurādhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Siṃha","Kanyā","Dhanu","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Karka","Tulā","Vṛścika","Kumbha"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-West","rahuVasa":"North-East","anandadiYoga":{"name":"Kāladaṇḍa","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":-23.154713060311522,"eotMinutes":5.090650249418121,"ayanamsa":26.2829}},"calendars":{"vikram_samvat":2230,"vikram_samvatsara":"Vyaya","saka_samvat":2095,"saka_samvatsara":"Śrīmukha","bengali_samvat":1580,"malayalam_era":1349,"nanakshahi_year":704,"lunar_month":"Mārgaśīrṣa","lunar_month_paksha_full":"Mārgaśīrṣa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Mārgaśīrṣa","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":"Mārgaśīrṣa Śukla Navamī · Vikram 2230 Vyaya · Śaka 2095 Śrīmukha"},"festivals":[],"todays_walk":{"walk":{"id":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7.","step_count":5,"url":"/walk/chandra-walk"},"reason":"Somavāra (Monday) — its presiding graha's walk."},"cosmic_resonances":[{"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":"dwarka"},"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, 2173 CE · Dvārakā · Vidhyamitra","description":"December 13, 2173 CE for Dvārakā: Śukla Navamī, sūryodaya 07:25, sūryāsta 18:13.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/dwarka/2173-12-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/dwarka/2173-12-13","sa":"https://sa.vidhyamitra.com/city/dwarka/2173-12-13","hi":"https://hi.vidhyamitra.com/city/dwarka/2173-12-13","x-default":"https://vidhyamitra.com/city/dwarka/2173-12-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T05:01:43.882Z","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":"2026-06-02T05:01:43.882Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T05:01:43.882Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}