{"id":"vidhyamitra:city-day:vrindavan:2173-12-31:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/vrindavan/2173-12-31","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2173-12-31","date_display":"December 31, 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":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2515096.770833,"kali_year":5275,"ahargana":1926631.2708,"sun":{"sidereal_longitude":252.718,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":205.9819,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":27,"name":"Dvādaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvādaśī","elongation_degrees":313.2639,"elapsed_within_tithi_degrees":1.2639},"nakshatra":{"number":16,"name":"Viśākhā","pada":2,"moon_longitude":205.9819,"elapsed_within_degrees":5.9819},"yoga":{"number":8,"name":"Dhṛti","sum_longitude":98.6998},"karana":{"half_tithi_index":52,"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":2173,"month":12,"day":31,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2515096.770833,"ahargana":1926631.2708,"kali_year":5275,"ayanamsa_lahiri":26.2836,"grahas":{"sun":{"sidereal_longitude":253.39276500000005,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":205.40376500000002,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":2},"retrograde":false,"latitude":-3.352},"mars":{"sidereal_longitude":182.275665,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":270.25376499999993,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":244.52326500000004,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false},"venus":{"sidereal_longitude":210.30896499999994,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":16,"name":"Viśākhā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":339.523465,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":337.8037,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":157.8037,"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":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2515096.770833,"kali_year":5275,"ahargana":1926631.2708,"sun":{"sidereal_longitude":252.718,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":205.9819,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":27,"name":"Dvādaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvādaśī","elongation_degrees":313.2639,"elapsed_within_tithi_degrees":1.2639},"nakshatra":{"number":16,"name":"Viśākhā","pada":2,"moon_longitude":205.9819,"elapsed_within_degrees":5.9819},"yoga":{"number":8,"name":"Dhṛti","sum_longitude":98.6998},"karana":{"half_tithi_index":52,"name":"Kaulava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.352,"elongation":46.736},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.352,"opposition_distance":133.264}},"eclipse_window_40days":[]},"city":{"slug":"vrindavan","name":"Vṛndāvana","lat":27.565,"lon":77.6593,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"tier2":{"city":{"slug":"vrindavan","name":"Vṛndāvana","lat":27.565,"lon":77.6593,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"sunriseLocal":"07:10","sunsetLocal":"17:35","solarNoonLocal":"12:23","dayLengthHours":10.425445660475823,"dayLengthDisplay":"10 Hours 25 Mins 32 Secs","nightLengthDisplay":"13 Hours 34 Mins 28 Secs","moonriseLocal":"03:47","moonsetLocal":"14:34","rahuKala":{"name":"Rāhu Kāla","start":"11:04","end":"12:23","startHours":11.073803207837278,"endHours":12.376983915396757,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"14:59","end":"16:17","startHours":14.98334533051571,"endHours":16.28652603807519,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:28","end":"09:46","startHours":8.467441792718322,"endHours":9.770622500277799,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:36","end":"09:57","startHours":9.596865072603203,"endHours":9.944379927952397,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:36","end":"07:53","startHours":7.598654654345337,"endHours":7.876666538624692,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:02","end":"12:43","startHours":12.029469060047562,"endHours":12.724498770745951,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:46","end":"06:28","startHours":5.774201663762067,"endHours":6.469231374460456,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:18","end":"07:10","startHours":6.295473946785859,"endHours":7.164261085158844,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:07","end":"14:49","startHours":14.114558192142727,"endHours":14.809587902841116,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:23","end":"17:47","startHours":17.38970674563467,"endHours":17.789706745634668,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:35","end":"18:01","startHours":17.58970674563467,"endHours":18.024100314821162,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:20","end":"19:05","startHours":17.33970674563467,"endHours":19.08970674563467,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:02","end":"00:43","startHours":24.029469060047564,"endHours":24.72449877074595,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"07:10","end":"08:28","startHours":7.164261085158844,"endHours":8.467441792718322,"quality":"neutral"},{"name":"Labha","start":"08:28","end":"09:46","startHours":8.467441792718322,"endHours":9.770622500277799,"quality":"auspicious"},{"name":"Amṛta","start":"09:46","end":"11:04","startHours":9.770622500277799,"endHours":11.073803207837278,"quality":"auspicious"},{"name":"Kāla","start":"11:04","end":"12:23","startHours":11.073803207837278,"endHours":12.376983915396757,"quality":"inauspicious"},{"name":"Śubha","start":"12:23","end":"13:41","startHours":12.376983915396757,"endHours":13.680164622956234,"quality":"auspicious"},{"name":"Roga","start":"13:41","end":"14:59","startHours":13.680164622956234,"endHours":14.98334533051571,"quality":"inauspicious"},{"name":"Udveg","start":"14:59","end":"16:17","startHours":14.98334533051571,"endHours":16.28652603807519,"quality":"inauspicious"},{"name":"Chala","start":"16:17","end":"17:35","startHours":16.28652603807519,"endHours":17.58970674563467,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"17:35","end":"19:17","startHours":17.58970674563467,"endHours":19.28652603807519,"quality":"inauspicious"},{"name":"Udveg","start":"19:17","end":"20:59","startHours":19.28652603807519,"endHours":20.98334533051571,"quality":"inauspicious"},{"name":"Chala","start":"20:59","end":"22:41","startHours":20.98334533051571,"endHours":22.680164622956234,"quality":"neutral"},{"name":"Labha","start":"22:41","end":"00:23","startHours":22.680164622956234,"endHours":24.376983915396757,"quality":"auspicious"},{"name":"Amṛta","start":"00:23","end":"02:04","startHours":24.376983915396757,"endHours":26.07380320783728,"quality":"auspicious"},{"name":"Kāla","start":"02:04","end":"03:46","startHours":26.07380320783728,"endHours":27.770622500277803,"quality":"inauspicious"},{"name":"Śubha","start":"03:46","end":"05:28","startHours":27.770622500277803,"endHours":29.467441792718322,"quality":"auspicious"},{"name":"Roga","start":"05:28","end":"07:10","startHours":29.467441792718322,"endHours":31.164261085158845,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:10","end":"08:10","startHours":7.164261085158844,"endHours":8.164261085158845,"planetary_lord":"Venus"},{"name":"Hora 2","start":"08:10","end":"09:10","startHours":8.164261085158845,"endHours":9.164261085158845,"planetary_lord":"Sun"},{"name":"Hora 3","start":"09:10","end":"10:10","startHours":9.164261085158845,"endHours":10.164261085158845,"planetary_lord":"Mars"},{"name":"Hora 4","start":"10:10","end":"11:10","startHours":10.164261085158845,"endHours":11.164261085158845,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"11:10","end":"12:10","startHours":11.164261085158845,"endHours":12.164261085158845,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"12:10","end":"13:10","startHours":12.164261085158845,"endHours":13.164261085158845,"planetary_lord":"Moon"},{"name":"Hora 7","start":"13:10","end":"14:10","startHours":13.164261085158845,"endHours":14.164261085158845,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"14:10","end":"15:10","startHours":14.164261085158845,"endHours":15.164261085158845,"planetary_lord":"Venus"},{"name":"Hora 9","start":"15:10","end":"16:10","startHours":15.164261085158845,"endHours":16.164261085158845,"planetary_lord":"Sun"},{"name":"Hora 10","start":"16:10","end":"17:10","startHours":16.164261085158845,"endHours":17.164261085158845,"planetary_lord":"Mars"},{"name":"Hora 11","start":"17:10","end":"18:10","startHours":17.164261085158845,"endHours":18.164261085158845,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"18:10","end":"19:10","startHours":18.164261085158845,"endHours":19.164261085158845,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"19:10","end":"20:10","startHours":19.164261085158845,"endHours":20.164261085158845,"planetary_lord":"Moon"},{"name":"Hora 14","start":"20:10","end":"21:10","startHours":20.164261085158845,"endHours":21.164261085158845,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"21:10","end":"22:10","startHours":21.164261085158845,"endHours":22.164261085158845,"planetary_lord":"Venus"},{"name":"Hora 16","start":"22:10","end":"23:10","startHours":22.164261085158845,"endHours":23.164261085158845,"planetary_lord":"Sun"},{"name":"Hora 17","start":"23:10","end":"00:10","startHours":23.164261085158845,"endHours":24.164261085158845,"planetary_lord":"Mars"},{"name":"Hora 18","start":"00:10","end":"01:10","startHours":24.164261085158845,"endHours":25.164261085158845,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"01:10","end":"02:10","startHours":25.164261085158845,"endHours":26.164261085158845,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"02:10","end":"03:10","startHours":26.164261085158845,"endHours":27.164261085158845,"planetary_lord":"Moon"},{"name":"Hora 21","start":"03:10","end":"04:10","startHours":27.164261085158845,"endHours":28.164261085158845,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"04:10","end":"05:10","startHours":28.164261085158845,"endHours":29.164261085158845,"planetary_lord":"Venus"},{"name":"Hora 23","start":"05:10","end":"06:10","startHours":29.164261085158845,"endHours":30.164261085158845,"planetary_lord":"Sun"},{"name":"Hora 24","start":"06:10","end":"07:10","startHours":30.164261085158845,"endHours":31.164261085158845,"planetary_lord":"Mars"}],"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","Tulā","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Vṛścika","Makara","Kumbha"]},"dishaShool":"West (Paścim)","chandraVasa":"North","rahuVasa":"South-East","anandadiYoga":{"name":"Śrīvatsa","quality":"Auspicious"},"tropicalRitu":"Hemanta (Pre-winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-23.08360378409922,"eotMinutes":-3.2562349238053434,"ayanamsa":26.2836}},"calendars":{"vikram_samvat":2230,"vikram_samvatsara":"Vyaya","saka_samvat":2095,"saka_samvatsara":"Śrīmukha","bengali_samvat":1580,"malayalam_era":1349,"nanakshahi_year":704,"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":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Kṛṣṇa Dvādaśī · Vikram 2230 Vyaya · Śaka 2095 Śrīmukha"},"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":"-0562-04-11","event":"Bhagavān Buddha's birth at Lumbinī","chart_id":"buddha","shared_marker":"same Viśākhā","url":"/day/-0562-04-11","relevance":0.5}]},"validity":{"eternal":false,"location_specific":"vrindavan"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga December 31, 2173 CE · Vṛndāvana · Vidhyamitra","description":"December 31, 2173 CE for Vṛndāvana: Kṛṣṇa Dvādaśī, sūryodaya 07:10, sūryāsta 17:35.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/vrindavan/2173-12-31","hreflang_alternates":{"en":"https://vidhyamitra.com/city/vrindavan/2173-12-31","sa":"https://sa.vidhyamitra.com/city/vrindavan/2173-12-31","hi":"https://hi.vidhyamitra.com/city/vrindavan/2173-12-31","x-default":"https://vidhyamitra.com/city/vrindavan/2173-12-31"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T01:36:55.111Z","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":"2026-06-02T01:36:55.111Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T01:36:55.111Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}