{"id":"vidhyamitra:city-day:thane:2173-04-16:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/thane/2173-04-16","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2173-04-16","date_display":"April 16, 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":4,"day":16,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2514837.770833,"kali_year":5274,"ahargana":1926372.2708,"sun":{"sidereal_longitude":359.9337,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":45.1817,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":45.2479,"elapsed_within_tithi_degrees":9.2479},"nakshatra":{"number":4,"name":"Rohiṇī","pada":2,"moon_longitude":45.1817,"elapsed_within_degrees":5.1817},"yoga":{"number":4,"name":"Saubhāgya","sum_longitude":45.1154},"karana":{"half_tithi_index":7,"name":"Viṣṭi"},"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":4,"day":16,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2514837.770833,"ahargana":1926372.2708,"kali_year":5274,"ayanamsa_lahiri":26.2737,"grahas":{"sun":{"sidereal_longitude":0.20416099999999915,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false},"moon":{"sidereal_longitude":43.489161000000024,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":2},"retrograde":false,"latitude":3.6233},"mars":{"sidereal_longitude":15.067860999999994,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":6.0871609999999805,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":231.338161,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":true},"venus":{"sidereal_longitude":14.45926099999997,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":338.784961,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":351.5267,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":171.5267,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","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":4,"day":16,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2514837.770833,"kali_year":5274,"ahargana":1926372.2708,"sun":{"sidereal_longitude":359.9337,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":45.1817,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":45.2479,"elapsed_within_tithi_degrees":9.2479},"nakshatra":{"number":4,"name":"Rohiṇī","pada":2,"moon_longitude":45.1817,"elapsed_within_degrees":5.1817},"yoga":{"number":4,"name":"Saubhāgya","sum_longitude":45.1154},"karana":{"half_tithi_index":7,"name":"Viṣṭi"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.623,"elongation":45.248},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.623,"opposition_distance":134.752}},"eclipse_window_40days":[{"offset_days":-4,"type":"solar","occurs":true,"moon_latitude":0.108,"elongation":2.903}]},"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":"06:20","sunsetLocal":"18:56","solarNoonLocal":"12:38","dayLengthHours":12.599974573666014,"dayLengthDisplay":"12 Hours 36 Mins 00 Secs","nightLengthDisplay":"11 Hours 24 Mins 00 Secs","moonriseLocal":"08:56","moonsetLocal":"22:06","rahuKala":{"name":"Rāhu Kāla","start":"11:04","end":"12:38","startHours":11.059541659681773,"endHours":12.634538481390027,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:47","end":"17:22","startHours":15.784532124806528,"endHours":17.359528946514782,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:55","end":"09:29","startHours":7.909548016265271,"endHours":9.484544837973523,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:16","end":"09:42","startHours":9.274545261745757,"endHours":9.69454441420129,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:52","end":"07:12","startHours":6.859550135126437,"endHours":7.195549457090864,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:13","end":"13:03","startHours":12.214539328934492,"endHours":13.054537633845559,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:39","end":"05:30","startHours":4.654554584734885,"endHours":5.494552889645952,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:17","end":"06:20","startHours":5.284553313418185,"endHours":6.33455119455702,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:44","end":"15:34","startHours":14.734534243667696,"endHours":15.574532548578764,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:44","end":"19:08","startHours":18.734525768223033,"endHours":19.134525768223032,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:56","end":"19:28","startHours":18.934525768223033,"endHours":19.45952470879245,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:41","end":"20:26","startHours":18.684525768223033,"endHours":20.434525768223033,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:13","end":"01:03","startHours":24.21453932893449,"endHours":25.05453763384556,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"06:20","end":"07:55","startHours":6.33455119455702,"endHours":7.909548016265271,"quality":"neutral"},{"name":"Labha","start":"07:55","end":"09:29","startHours":7.909548016265271,"endHours":9.484544837973523,"quality":"auspicious"},{"name":"Amṛta","start":"09:29","end":"11:04","startHours":9.484544837973523,"endHours":11.059541659681773,"quality":"auspicious"},{"name":"Kāla","start":"11:04","end":"12:38","startHours":11.059541659681773,"endHours":12.634538481390027,"quality":"inauspicious"},{"name":"Śubha","start":"12:38","end":"14:13","startHours":12.634538481390027,"endHours":14.209535303098278,"quality":"auspicious"},{"name":"Roga","start":"14:13","end":"15:47","startHours":14.209535303098278,"endHours":15.784532124806528,"quality":"inauspicious"},{"name":"Udveg","start":"15:47","end":"17:22","startHours":15.784532124806528,"endHours":17.359528946514782,"quality":"inauspicious"},{"name":"Chala","start":"17:22","end":"18:56","startHours":17.359528946514782,"endHours":18.934525768223033,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"18:56","end":"20:22","startHours":18.934525768223033,"endHours":20.359528946514782,"quality":"inauspicious"},{"name":"Udveg","start":"20:22","end":"21:47","startHours":20.359528946514782,"endHours":21.78453212480653,"quality":"inauspicious"},{"name":"Chala","start":"21:47","end":"23:13","startHours":21.78453212480653,"endHours":23.209535303098278,"quality":"neutral"},{"name":"Labha","start":"23:13","end":"00:38","startHours":23.209535303098278,"endHours":24.634538481390024,"quality":"auspicious"},{"name":"Amṛta","start":"00:38","end":"02:04","startHours":24.634538481390024,"endHours":26.059541659681773,"quality":"auspicious"},{"name":"Kāla","start":"02:04","end":"03:29","startHours":26.059541659681773,"endHours":27.484544837973523,"quality":"inauspicious"},{"name":"Śubha","start":"03:29","end":"04:55","startHours":27.484544837973523,"endHours":28.90954801626527,"quality":"auspicious"},{"name":"Roga","start":"04:55","end":"06:20","startHours":28.90954801626527,"endHours":30.33455119455702,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:20","end":"07:20","startHours":6.33455119455702,"endHours":7.33455119455702,"planetary_lord":"Venus"},{"name":"Hora 2","start":"07:20","end":"08:20","startHours":7.33455119455702,"endHours":8.334551194557019,"planetary_lord":"Sun"},{"name":"Hora 3","start":"08:20","end":"09:20","startHours":8.334551194557019,"endHours":9.334551194557019,"planetary_lord":"Mars"},{"name":"Hora 4","start":"09:20","end":"10:20","startHours":9.334551194557019,"endHours":10.334551194557019,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"10:20","end":"11:20","startHours":10.334551194557019,"endHours":11.334551194557019,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"11:20","end":"12:20","startHours":11.334551194557019,"endHours":12.334551194557019,"planetary_lord":"Moon"},{"name":"Hora 7","start":"12:20","end":"13:20","startHours":12.334551194557019,"endHours":13.334551194557019,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"13:20","end":"14:20","startHours":13.334551194557019,"endHours":14.334551194557019,"planetary_lord":"Venus"},{"name":"Hora 9","start":"14:20","end":"15:20","startHours":14.334551194557019,"endHours":15.334551194557019,"planetary_lord":"Sun"},{"name":"Hora 10","start":"15:20","end":"16:20","startHours":15.334551194557019,"endHours":16.33455119455702,"planetary_lord":"Mars"},{"name":"Hora 11","start":"16:20","end":"17:20","startHours":16.33455119455702,"endHours":17.33455119455702,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"17:20","end":"18:20","startHours":17.33455119455702,"endHours":18.33455119455702,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"18:20","end":"19:20","startHours":18.33455119455702,"endHours":19.33455119455702,"planetary_lord":"Moon"},{"name":"Hora 14","start":"19:20","end":"20:20","startHours":19.33455119455702,"endHours":20.33455119455702,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"20:20","end":"21:20","startHours":20.33455119455702,"endHours":21.33455119455702,"planetary_lord":"Venus"},{"name":"Hora 16","start":"21:20","end":"22:20","startHours":21.33455119455702,"endHours":22.33455119455702,"planetary_lord":"Sun"},{"name":"Hora 17","start":"22:20","end":"23:20","startHours":22.33455119455702,"endHours":23.33455119455702,"planetary_lord":"Mars"},{"name":"Hora 18","start":"23:20","end":"00:20","startHours":23.33455119455702,"endHours":24.33455119455702,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"00:20","end":"01:20","startHours":24.33455119455702,"endHours":25.33455119455702,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"01:20","end":"02:20","startHours":25.33455119455702,"endHours":26.33455119455702,"planetary_lord":"Moon"},{"name":"Hora 21","start":"02:20","end":"03:20","startHours":26.33455119455702,"endHours":27.33455119455702,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"03:20","end":"04:20","startHours":27.33455119455702,"endHours":28.33455119455702,"planetary_lord":"Venus"},{"name":"Hora 23","start":"04:20","end":"05:20","startHours":28.33455119455702,"endHours":29.33455119455702,"planetary_lord":"Sun"},{"name":"Hora 24","start":"05:20","end":"06:20","startHours":29.33455119455702,"endHours":30.33455119455702,"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":"Vasanta (Spring)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":10.214266952818614,"eotMinutes":0.015291116598477705,"ayanamsa":26.2737}},"calendars":{"vikram_samvat":2230,"vikram_samvatsara":"Vyaya","saka_samvat":2095,"saka_samvatsara":"Śrīmukha","bengali_samvat":1580,"malayalam_era":1349,"nanakshahi_year":704,"lunar_month":"Caitra","lunar_month_paksha_full":"Caitra Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Caitra","lunar_month_amanta":"Caitra","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Vasanta (Spring)","display_summary":"Caitra Śukla Caturthī · Vikram 2230 Vyaya · Śaka 2095 Śrīmukha"},"festivals":[{"id":"mesha-sankranti","name":"Meṣa Saṅkrānti (Vaiśākhī / Vishu / Pohelā Boishākh / Bihu)","name_sanskrit":"मेष सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Aries; solar new year. Regional: Vaiśākhī (Punjab) · Vishu (Kerala) · Pohelā Boishākh (Bengal) · Bihu (Assam) · Tamil Puthāṇḍu.","vrata":false,"detection":{"sun_rashi_ingress":"Meṣa"},"precedence":1},{"id":"baisakhi","name":"Baisakhi (Vaiśākhī)","name_sanskrit":"वैशाखी","tradition":"Regional","associated_deity":"Sūrya + Khalsa Pantha (Sikh)","significance":"Punjab New Year + Sikh Khalsa founding day.","vrata":false,"detection":{"sun_rashi_ingress":"Meṣa"},"precedence":2},{"id":"vinayaka-chaturthi","name":"Vināyaka Caturthī (monthly)","name_sanskrit":"विनायक चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Śukla-pakṣa Caturthī; auspicious for new ventures.","vrata":true,"detection":{"tithi_number":4,"tithi_paksha":"Śukla"},"precedence":6}],"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}]},"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 April 16, 2173 CE · Thane, Maharashtra · Vidhyamitra","description":"April 16, 2173 CE for Thane, Maharashtra: Śukla Caturthī, sūryodaya 06:20, sūryāsta 18:56.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/thane/2173-04-16","hreflang_alternates":{"en":"https://vidhyamitra.com/city/thane/2173-04-16","sa":"https://sa.vidhyamitra.com/city/thane/2173-04-16","hi":"https://hi.vidhyamitra.com/city/thane/2173-04-16","x-default":"https://vidhyamitra.com/city/thane/2173-04-16"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-03T00:23:07.682Z","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":"2026-06-03T00:23:07.682Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-03T00:23:07.682Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}