{"id":"vidhyamitra:city-day:thane:2173-10-20:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/thane/2173-10-20","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2173-10-20","date_display":"October 20, 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":10,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2515024.770833,"kali_year":5275,"ahargana":1926559.2708,"sun":{"sidereal_longitude":179.6188,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":348.1972,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":168.5784,"elapsed_within_tithi_degrees":0.5784},"nakshatra":{"number":27,"name":"Revatī","pada":1,"moon_longitude":348.1972,"elapsed_within_degrees":1.5305},"yoga":{"number":13,"name":"Vyāghāta","sum_longitude":167.816},"karana":{"half_tithi_index":28,"name":"Viṣṭi"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"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":10,"day":20,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2515024.770833,"ahargana":1926559.2708,"kali_year":5275,"ayanamsa_lahiri":26.2809,"grahas":{"sun":{"sidereal_longitude":180.768916,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":347.577616,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":1},"retrograde":false,"latitude":0.515},"mars":{"sidereal_longitude":139.37701600000003,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":161.936916,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":229.11951599999998,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":217.30811599999993,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":341.092716,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":3},"retrograde":true},"rahu":{"sidereal_longitude":341.6186,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":161.6186,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"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":10,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2515024.770833,"kali_year":5275,"ahargana":1926559.2708,"sun":{"sidereal_longitude":179.6188,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":348.1972,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":168.5784,"elapsed_within_tithi_degrees":0.5784},"nakshatra":{"number":27,"name":"Revatī","pada":1,"moon_longitude":348.1972,"elapsed_within_degrees":1.5305},"yoga":{"number":13,"name":"Vyāghāta","sum_longitude":167.816},"karana":{"half_tithi_index":28,"name":"Viṣṭi"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":0.515,"elongation":168.578},"lunar":{"type":"lunar","occurs":false,"moon_latitude":0.515,"opposition_distance":11.422}},"eclipse_window_40days":[{"offset_days":-13,"type":"solar","occurs":true,"moon_latitude":-0.348,"elongation":0.001}]},"city":{"slug":"thane","name":"Thane, Maharashtra","lat":19.2183,"lon":72.9781,"tz_offset_hours":5.5,"state":"Maharashtra","country":"IN","tier":"tier-1"},"tier2":{"city":{"slug":"thane","name":"Thane, Maharashtra","lat":19.2183,"lon":72.9781,"tz_offset_hours":5.5,"state":"Maharashtra","country":"IN","tier":"tier-1"},"sunriseLocal":"06:34","sunsetLocal":"18:11","solarNoonLocal":"12:22","dayLengthHours":11.629684643510132,"dayLengthDisplay":"11 Hours 37 Mins 47 Secs","nightLengthDisplay":"12 Hours 22 Mins 13 Secs","moonriseLocal":"17:19","moonsetLocal":"05:40","rahuKala":{"name":"Rāhu Kāla","start":"12:22","end":"13:50","startHours":12.373178812596148,"endHours":13.826889393034914,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"08:01","end":"09:28","startHours":8.012047071279849,"endHours":9.465757651718615,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:55","end":"12:22","startHours":10.919468232157381,"endHours":12.373178812596148,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:16","end":"09:40","startHours":9.27192957432678,"endHours":9.659585729110452,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:03","end":"07:21","startHours":7.042906684320672,"endHours":7.353031608147608,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:59","end":"12:46","startHours":11.985522657812476,"endHours":12.76083496737982,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:00","end":"05:47","startHours":5.007711871706399,"endHours":5.783024181273741,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:35","end":"06:34","startHours":5.589196103881905,"endHours":6.558336490841083,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:19","end":"15:05","startHours":14.311459586514504,"endHours":15.086771896081846,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:59","end":"18:23","startHours":17.988021134351214,"endHours":18.388021134351213,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:11","end":"18:40","startHours":18.188021134351214,"endHours":18.6725913278308,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:56","end":"19:41","startHours":17.938021134351214,"endHours":19.688021134351214,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:59","end":"00:46","startHours":23.985522657812478,"endHours":24.760834967379818,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"06:34","end":"08:01","startHours":6.558336490841083,"endHours":8.012047071279849,"quality":"auspicious"},{"name":"Amṛta","start":"08:01","end":"09:28","startHours":8.012047071279849,"endHours":9.465757651718615,"quality":"auspicious"},{"name":"Kāla","start":"09:28","end":"10:55","startHours":9.465757651718615,"endHours":10.919468232157381,"quality":"inauspicious"},{"name":"Śubha","start":"10:55","end":"12:22","startHours":10.919468232157381,"endHours":12.373178812596148,"quality":"auspicious"},{"name":"Roga","start":"12:22","end":"13:50","startHours":12.373178812596148,"endHours":13.826889393034914,"quality":"inauspicious"},{"name":"Udveg","start":"13:50","end":"15:17","startHours":13.826889393034914,"endHours":15.28059997347368,"quality":"inauspicious"},{"name":"Chala","start":"15:17","end":"16:44","startHours":15.28059997347368,"endHours":16.734310553912447,"quality":"neutral"},{"name":"Labha","start":"16:44","end":"18:11","startHours":16.734310553912447,"endHours":18.188021134351214,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"18:11","end":"19:44","startHours":18.188021134351214,"endHours":19.734310553912447,"quality":"inauspicious"},{"name":"Chala","start":"19:44","end":"21:17","startHours":19.734310553912447,"endHours":21.28059997347368,"quality":"neutral"},{"name":"Labha","start":"21:17","end":"22:50","startHours":21.28059997347368,"endHours":22.826889393034914,"quality":"auspicious"},{"name":"Amṛta","start":"22:50","end":"00:22","startHours":22.826889393034914,"endHours":24.373178812596148,"quality":"auspicious"},{"name":"Kāla","start":"00:22","end":"01:55","startHours":24.373178812596148,"endHours":25.91946823215738,"quality":"inauspicious"},{"name":"Śubha","start":"01:55","end":"03:28","startHours":25.91946823215738,"endHours":27.465757651718615,"quality":"auspicious"},{"name":"Roga","start":"03:28","end":"05:01","startHours":27.465757651718615,"endHours":29.01204707127985,"quality":"inauspicious"},{"name":"Udveg","start":"05:01","end":"06:34","startHours":29.01204707127985,"endHours":30.558336490841082,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:34","end":"07:34","startHours":6.558336490841083,"endHours":7.558336490841083,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"07:34","end":"08:34","startHours":7.558336490841083,"endHours":8.558336490841082,"planetary_lord":"Venus"},{"name":"Hora 3","start":"08:34","end":"09:34","startHours":8.558336490841082,"endHours":9.558336490841082,"planetary_lord":"Sun"},{"name":"Hora 4","start":"09:34","end":"10:34","startHours":9.558336490841082,"endHours":10.558336490841082,"planetary_lord":"Mars"},{"name":"Hora 5","start":"10:34","end":"11:34","startHours":10.558336490841082,"endHours":11.558336490841082,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"11:34","end":"12:34","startHours":11.558336490841082,"endHours":12.558336490841082,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"12:34","end":"13:34","startHours":12.558336490841082,"endHours":13.558336490841082,"planetary_lord":"Moon"},{"name":"Hora 8","start":"13:34","end":"14:34","startHours":13.558336490841082,"endHours":14.558336490841082,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"14:34","end":"15:34","startHours":14.558336490841082,"endHours":15.558336490841082,"planetary_lord":"Venus"},{"name":"Hora 10","start":"15:34","end":"16:34","startHours":15.558336490841082,"endHours":16.558336490841082,"planetary_lord":"Sun"},{"name":"Hora 11","start":"16:34","end":"17:34","startHours":16.558336490841082,"endHours":17.558336490841082,"planetary_lord":"Mars"},{"name":"Hora 12","start":"17:34","end":"18:34","startHours":17.558336490841082,"endHours":18.558336490841082,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"18:34","end":"19:34","startHours":18.558336490841082,"endHours":19.558336490841082,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"19:34","end":"20:34","startHours":19.558336490841082,"endHours":20.558336490841082,"planetary_lord":"Moon"},{"name":"Hora 15","start":"20:34","end":"21:34","startHours":20.558336490841082,"endHours":21.558336490841082,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"21:34","end":"22:34","startHours":21.558336490841082,"endHours":22.558336490841082,"planetary_lord":"Venus"},{"name":"Hora 17","start":"22:34","end":"23:34","startHours":22.558336490841082,"endHours":23.558336490841082,"planetary_lord":"Sun"},{"name":"Hora 18","start":"23:34","end":"00:34","startHours":23.558336490841082,"endHours":24.558336490841082,"planetary_lord":"Mars"},{"name":"Hora 19","start":"00:34","end":"01:34","startHours":24.558336490841082,"endHours":25.558336490841082,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"01:34","end":"02:34","startHours":25.558336490841082,"endHours":26.558336490841082,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"02:34","end":"03:34","startHours":26.558336490841082,"endHours":27.558336490841082,"planetary_lord":"Moon"},{"name":"Hora 22","start":"03:34","end":"04:34","startHours":27.558336490841082,"endHours":28.558336490841082,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"04:34","end":"05:34","startHours":28.558336490841082,"endHours":29.558336490841082,"planetary_lord":"Venus"},{"name":"Hora 24","start":"05:34","end":"06:34","startHours":29.558336490841082,"endHours":30.558336490841082,"planetary_lord":"Sun"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"unfavorable_nakshatras":["Ārdrā","Punarvasu","Puṣya","Aśleṣā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"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":"North (Uttara)","chandraVasa":"South-West","rahuVasa":"South-West","anandadiYoga":{"name":"Chatra","quality":"Auspicious"},"tropicalRitu":"Śarad (Autumn)","vedicRitu":"Śarad (Autumn)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-10.420719108980723,"eotMinutes":15.696871244231174,"ayanamsa":26.2809}},"calendars":{"vikram_samvat":2230,"vikram_samvatsara":"Vyaya","saka_samvat":2095,"saka_samvatsara":"Śrīmukha","bengali_samvat":1580,"malayalam_era":1349,"nanakshahi_year":704,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Āśvina","lunar_month_amanta":"Āśvina","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Tulā (Aippasi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Śukla Pūrṇimā · Vikram 2230 Vyaya · Śaka 2095 Śrīmukha"},"festivals":[{"id":"sharad-purnima","name":"Śarad Pūrṇimā / Kojāgarī Pūrṇimā","name_sanskrit":"शरद पूर्णिमा","tradition":"Vaishnava","associated_deity":"Krishna + Lakṣmī","significance":"Krishna's Mahā-rāsa with the gopīs at Vṛndāvana. Lakṣmī wakes (\"ko jāgartti?\")","vrata":true,"primary_observance":"Night-long jāgaraṇa; offering of pāyasa under moonlight","detection":{"tithi_number":15,"tithi_paksha":"Śukla","lunar_month":"Āśvina"},"precedence":2,"sources":["Bhāgavata 10.29-33"]},{"id":"rasa-purnima","name":"Rāsa Pūrṇimā (Vraja Mahā-Rāsa)","name_sanskrit":"रास पूर्णिमा","tradition":"Vaishnava","associated_deity":"Krishna + Gopīs","significance":"Krishna's Mahā-rāsa with the gopīs at Vraja (Bhāgavata 10.29-33). Same as Śarad Pūrṇimā but emphasized in Vraja tradition.","vrata":false,"detection":{"tithi_number":15,"tithi_paksha":"Śukla","lunar_month":"Āśvina"},"precedence":2},{"id":"valmiki-jayanti","name":"Mahārṣi Vālmīki Jayantī","name_sanskrit":"महर्षि वाल्मीकि जयन्ती","tradition":"Pan-Hindu","associated_deity":"Maharṣi Vālmīki (ādi-kavi)","significance":"Composer of Vālmīki Rāmāyaṇa. Āśvina Pūrṇimā tradition.","vrata":false,"detection":{"tithi_number":15,"tithi_paksha":"Śukla","lunar_month":"Āśvina"},"precedence":3},{"id":"tula-sankranti","name":"Tulā Saṅkrānti","name_sanskrit":"तुला सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Libra.","vrata":false,"detection":{"sun_rashi_ingress":"Tulā"},"precedence":5}],"todays_walk":{"walk":{"id":"budha-walk","name":"Budha Walk","name_sanskrit":"बुध यात्रा","type":"graha","description":"Discrimination + BG 2.41 (vyavasāyātmikā buddhi).","step_count":6,"url":"/walk/budha-walk"},"reason":"Budhavāra (Wednesday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3137-10-04","event":"Mahābhārata Day 1 (Bhagavad Gītā delivered)","chart_id":"krishna","shared_marker":"same Śukla Pūrṇimā","url":"/day/-3137-10-04","relevance":0.5},{"historical_date":"-0562-04-11","event":"Bhagavān Buddha's birth at Lumbinī","chart_id":"buddha","shared_marker":"same Śukla Pūrṇimā","url":"/day/-0562-04-11","relevance":0.5}]},"validity":{"eternal":false,"location_specific":"thane"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga October 20, 2173 CE · Thane, Maharashtra · Vidhyamitra","description":"October 20, 2173 CE for Thane, Maharashtra: Śukla Pūrṇimā, sūryodaya 06:34, sūryāsta 18:11.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/thane/2173-10-20","hreflang_alternates":{"en":"https://vidhyamitra.com/city/thane/2173-10-20","sa":"https://sa.vidhyamitra.com/city/thane/2173-10-20","hi":"https://hi.vidhyamitra.com/city/thane/2173-10-20","x-default":"https://vidhyamitra.com/city/thane/2173-10-20"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T20:01:09.350Z","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":"2026-06-01T20:01:09.350Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T20:01:09.350Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}