{"id":"vidhyamitra:city-day:thane:2173-02-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/thane/2173-02-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2173-02-13","date_display":"February 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":2,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2514775.770833,"kali_year":5274,"ahargana":1926310.2708,"sun":{"sidereal_longitude":298.0737,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":306.4197,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":8.346,"elapsed_within_tithi_degrees":8.346},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4,"moon_longitude":306.4197,"elapsed_within_degrees":13.0863},"yoga":{"number":19,"name":"Parigha","sum_longitude":244.4933},"karana":{"half_tithi_index":1,"name":"Bava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"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":2,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2514775.770833,"ahargana":1926310.2708,"kali_year":5274,"ayanamsa_lahiri":26.2713,"grahas":{"sun":{"sidereal_longitude":298.3995299999999,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":306.3832299999999,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":false,"latitude":-3.3632},"mars":{"sidereal_longitude":328.47812999999996,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":272.08283000000006,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":true},"jupiter":{"sidereal_longitude":227.67742999999996,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":297.29213000000004,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":331.28363,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":354.8118,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":174.8118,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","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":2,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2514775.770833,"kali_year":5274,"ahargana":1926310.2708,"sun":{"sidereal_longitude":298.0737,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":306.4197,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":8.346,"elapsed_within_tithi_degrees":8.346},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4,"moon_longitude":306.4197,"elapsed_within_degrees":13.0863},"yoga":{"number":19,"name":"Parigha","sum_longitude":244.4933},"karana":{"half_tithi_index":1,"name":"Bava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.363,"elongation":8.346},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.363,"opposition_distance":171.654}},"eclipse_window_40days":[]},"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":"07:08","sunsetLocal":"18:37","solarNoonLocal":"12:53","dayLengthHours":11.491107778403439,"dayLengthDisplay":"11 Hours 29 Mins 28 Secs","nightLengthDisplay":"12 Hours 30 Mins 32 Secs","moonriseLocal":"07:37","moonsetLocal":"19:12","rahuKala":{"name":"Rāhu Kāla","start":"10:00","end":"11:27","startHours":10.005341809742845,"endHours":11.441730282043274,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"14:19","end":"15:45","startHours":14.314507226644134,"endHours":15.750895698944564,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:08","end":"08:34","startHours":7.132564865141984,"endHours":8.568953337442414,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:49","end":"10:12","startHours":9.813823346769453,"endHours":10.196860272716235,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:37","end":"07:55","startHours":7.611361022575461,"endHours":7.917790563332886,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:30","end":"13:16","startHours":12.495081828396922,"endHours":13.261155680290484,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:36","end":"06:22","startHours":5.600417161354859,"endHours":6.366491013248422,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:10","end":"07:08","startHours":6.174972550275031,"endHours":7.132564865141984,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:48","end":"15:34","startHours":14.79330338407761,"endHours":15.559377235971173,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:25","end":"18:49","startHours":18.423672643545423,"endHours":18.82367264354542,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:37","end":"19:06","startHours":18.623672643545422,"endHours":19.102468800978897,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:22","end":"20:07","startHours":18.373672643545422,"endHours":20.123672643545422,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:30","end":"01:16","startHours":24.49508182839692,"endHours":25.261155680290486,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"07:08","end":"08:34","startHours":7.132564865141984,"endHours":8.568953337442414,"quality":"inauspicious"},{"name":"Śubha","start":"08:34","end":"10:00","startHours":8.568953337442414,"endHours":10.005341809742845,"quality":"auspicious"},{"name":"Roga","start":"10:00","end":"11:27","startHours":10.005341809742845,"endHours":11.441730282043274,"quality":"inauspicious"},{"name":"Udveg","start":"11:27","end":"12:53","startHours":11.441730282043274,"endHours":12.878118754343703,"quality":"inauspicious"},{"name":"Chala","start":"12:53","end":"14:19","startHours":12.878118754343703,"endHours":14.314507226644134,"quality":"neutral"},{"name":"Labha","start":"14:19","end":"15:45","startHours":14.314507226644134,"endHours":15.750895698944564,"quality":"auspicious"},{"name":"Amṛta","start":"15:45","end":"17:11","startHours":15.750895698944564,"endHours":17.187284171244993,"quality":"auspicious"},{"name":"Kāla","start":"17:11","end":"18:37","startHours":17.187284171244993,"endHours":18.623672643545422,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"18:37","end":"20:11","startHours":18.623672643545422,"endHours":20.187284171244993,"quality":"auspicious"},{"name":"Amṛta","start":"20:11","end":"21:45","startHours":20.187284171244993,"endHours":21.75089569894456,"quality":"auspicious"},{"name":"Kāla","start":"21:45","end":"23:19","startHours":21.75089569894456,"endHours":23.314507226644132,"quality":"inauspicious"},{"name":"Śubha","start":"23:19","end":"00:53","startHours":23.314507226644132,"endHours":24.878118754343703,"quality":"auspicious"},{"name":"Roga","start":"00:53","end":"02:27","startHours":24.878118754343703,"endHours":26.441730282043274,"quality":"inauspicious"},{"name":"Udveg","start":"02:27","end":"04:00","startHours":26.441730282043274,"endHours":28.005341809742845,"quality":"inauspicious"},{"name":"Chala","start":"04:00","end":"05:34","startHours":28.005341809742845,"endHours":29.568953337442412,"quality":"neutral"},{"name":"Labha","start":"05:34","end":"07:08","startHours":29.568953337442412,"endHours":31.132564865141983,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:08","end":"08:08","startHours":7.132564865141984,"endHours":8.132564865141983,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"08:08","end":"09:08","startHours":8.132564865141983,"endHours":9.132564865141983,"planetary_lord":"Moon"},{"name":"Hora 3","start":"09:08","end":"10:08","startHours":9.132564865141983,"endHours":10.132564865141983,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"10:08","end":"11:08","startHours":10.132564865141983,"endHours":11.132564865141983,"planetary_lord":"Venus"},{"name":"Hora 5","start":"11:08","end":"12:08","startHours":11.132564865141983,"endHours":12.132564865141983,"planetary_lord":"Sun"},{"name":"Hora 6","start":"12:08","end":"13:08","startHours":12.132564865141983,"endHours":13.132564865141983,"planetary_lord":"Mars"},{"name":"Hora 7","start":"13:08","end":"14:08","startHours":13.132564865141983,"endHours":14.132564865141983,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"14:08","end":"15:08","startHours":14.132564865141983,"endHours":15.132564865141983,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"15:08","end":"16:08","startHours":15.132564865141983,"endHours":16.132564865141983,"planetary_lord":"Moon"},{"name":"Hora 10","start":"16:08","end":"17:08","startHours":16.132564865141983,"endHours":17.132564865141983,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"17:08","end":"18:08","startHours":17.132564865141983,"endHours":18.132564865141983,"planetary_lord":"Venus"},{"name":"Hora 12","start":"18:08","end":"19:08","startHours":18.132564865141983,"endHours":19.132564865141983,"planetary_lord":"Sun"},{"name":"Hora 13","start":"19:08","end":"20:08","startHours":19.132564865141983,"endHours":20.132564865141983,"planetary_lord":"Mars"},{"name":"Hora 14","start":"20:08","end":"21:08","startHours":20.132564865141983,"endHours":21.132564865141983,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"21:08","end":"22:08","startHours":21.132564865141983,"endHours":22.132564865141983,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"22:08","end":"23:08","startHours":22.132564865141983,"endHours":23.132564865141983,"planetary_lord":"Moon"},{"name":"Hora 17","start":"23:08","end":"00:08","startHours":23.132564865141983,"endHours":24.132564865141983,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"00:08","end":"01:08","startHours":24.132564865141983,"endHours":25.132564865141983,"planetary_lord":"Venus"},{"name":"Hora 19","start":"01:08","end":"02:08","startHours":25.132564865141983,"endHours":26.132564865141983,"planetary_lord":"Sun"},{"name":"Hora 20","start":"02:08","end":"03:08","startHours":26.132564865141983,"endHours":27.132564865141983,"planetary_lord":"Mars"},{"name":"Hora 21","start":"03:08","end":"04:08","startHours":27.132564865141983,"endHours":28.132564865141983,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"04:08","end":"05:08","startHours":28.132564865141983,"endHours":29.132564865141983,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"05:08","end":"06:08","startHours":29.132564865141983,"endHours":30.132564865141983,"planetary_lord":"Moon"},{"name":"Hora 24","start":"06:08","end":"07:08","startHours":30.132564865141983,"endHours":31.132564865141983,"planetary_lord":"Mercury"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Maghā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Dhanu","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Makara","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"South","rahuVasa":"East","anandadiYoga":{"name":"Siddhi","quality":"Auspicious"},"tropicalRitu":"Śiśira (Winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-13.296951969809415,"eotMinutes":-14.599525260622107,"ayanamsa":26.2713}},"calendars":{"vikram_samvat":2230,"vikram_samvatsara":"Vyaya","saka_samvat":2095,"saka_samvatsara":"Śrīmukha","bengali_samvat":1580,"malayalam_era":1349,"nanakshahi_year":704,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Māgha","lunar_month_amanta":"Māgha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Pratipada · Vikram 2230 Vyaya · Śaka 2095 Śrīmukha"},"festivals":[{"id":"magha-gupta-navratri-start","name":"Māgha Gupta Navrātri Start","name_sanskrit":"माघ गुप्त नवरात्रि आरम्भ","tradition":"Shakta","associated_deity":"Devī (10 Mahāvidyās)","significance":"Hidden (gupta) Navrātri for advanced sādhanā of 10 Mahāvidyās.","vrata":true,"detection":{"tithi_number":1,"tithi_paksha":"Śukla","lunar_month":"Māgha"},"precedence":3}],"todays_walk":{"walk":{"id":"shani-walk","name":"Śani Walk","name_sanskrit":"शनि यात्रा","type":"graha","description":"Tapas + endurance + BG 17.14-19.","step_count":7,"url":"/walk/shani-walk"},"reason":"Śanivāra (Saturday) — its presiding graha's walk."},"cosmic_resonances":[]},"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 February 13, 2173 CE · Thane, Maharashtra · Vidhyamitra","description":"February 13, 2173 CE for Thane, Maharashtra: Śukla Pratipada, sūryodaya 07:08, sūryāsta 18:37.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/thane/2173-02-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/thane/2173-02-13","sa":"https://sa.vidhyamitra.com/city/thane/2173-02-13","hi":"https://hi.vidhyamitra.com/city/thane/2173-02-13","x-default":"https://vidhyamitra.com/city/thane/2173-02-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T19:27:52.816Z","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":"2026-06-01T19:27:52.816Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T19:27:52.816Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}