{"id":"vidhyamitra:city-day:thane:-3136-02-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/thane/-3136-02-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"-3136-02-13","date_display":"February 13, 3137 BCE","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":-3136,"month":2,"day":13,"hour":6,"minute":30,"second":0,"calendar":"julian"},"julian_day":575676.770833,"kali_year":-35,"ahargana":-12788.7292,"sun":{"sidereal_longitude":357.7232,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":336.1648,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":29,"name":"Caturdaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturdaśī","elongation_degrees":338.4416,"elapsed_within_tithi_degrees":2.4416},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1,"moon_longitude":336.1648,"elapsed_within_degrees":2.8315},"yoga":{"number":26,"name":"Indra","sum_longitude":333.888},"karana":{"half_tithi_index":56,"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":-3136,"month":2,"day":13,"hour":6,"minute":30,"calendar":"julian"},"julian_day":575676.770833,"ahargana":-12788.7292,"kali_year":-35,"ayanamsa_lahiri":-47.8919,"grahas":{"sun":{"sidereal_longitude":357.7232,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false},"moon":{"sidereal_longitude":336.1648,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1},"retrograde":false,"latitude":-1.4307},"mars":{"sidereal_longitude":102.2304,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":330.8688,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":16.4251,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1},"retrograde":false},"venus":{"sidereal_longitude":11.1831,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":290.3492,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":137.6084,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":317.6084,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","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":-3136,"month":2,"day":13,"hour":6,"minute":30,"second":0,"calendar":"julian"},"julian_day":575676.770833,"kali_year":-35,"ahargana":-12788.7292,"sun":{"sidereal_longitude":357.7232,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":336.1648,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":29,"name":"Caturdaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturdaśī","elongation_degrees":338.4416,"elapsed_within_tithi_degrees":2.4416},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1,"moon_longitude":336.1648,"elapsed_within_degrees":2.8315},"yoga":{"number":26,"name":"Indra","sum_longitude":333.888},"karana":{"half_tithi_index":56,"name":"Viṣṭi"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-1.431,"elongation":21.558},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-1.431,"opposition_distance":158.442}},"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":"07:15","sunsetLocal":"18:31","solarNoonLocal":"12:53","dayLengthHours":11.268194855014734,"dayLengthDisplay":"11 Hours 16 Mins 06 Secs","nightLengthDisplay":"12 Hours 43 Mins 54 Secs","moonriseLocal":"05:56","moonsetLocal":"16:56","rahuKala":{"name":"Rāhu Kāla","start":"11:28","end":"12:53","startHours":11.46959439746686,"endHours":12.878118754343703,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:42","end":"17:06","startHours":15.695167468097386,"endHours":17.103691824974227,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:39","end":"10:04","startHours":8.652545683713178,"endHours":10.06107004059002,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:52","end":"10:15","startHours":9.87326679300644,"endHours":10.248873288173598,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:43","end":"08:01","startHours":7.713529445795283,"endHours":8.014014641929009,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:30","end":"13:15","startHours":12.502512259176545,"endHours":13.253725249510861,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:44","end":"06:30","startHours":5.7415953461677045,"endHours":6.49280833650202,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:18","end":"07:15","startHours":6.305005088918441,"endHours":7.244021326836336,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:45","end":"15:30","startHours":14.75615123017949,"endHours":15.507364220513805,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:19","end":"18:43","startHours":18.31221618185107,"endHours":18.71221618185107,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:31","end":"18:59","startHours":18.51221618185107,"endHours":18.98172430081002,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:16","end":"20:01","startHours":18.26221618185107,"endHours":20.01221618185107,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:30","end":"01:15","startHours":24.502512259176545,"endHours":25.25372524951086,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"07:15","end":"08:39","startHours":7.244021326836336,"endHours":8.652545683713178,"quality":"neutral"},{"name":"Labha","start":"08:39","end":"10:04","startHours":8.652545683713178,"endHours":10.06107004059002,"quality":"auspicious"},{"name":"Amṛta","start":"10:04","end":"11:28","startHours":10.06107004059002,"endHours":11.46959439746686,"quality":"auspicious"},{"name":"Kāla","start":"11:28","end":"12:53","startHours":11.46959439746686,"endHours":12.878118754343703,"quality":"inauspicious"},{"name":"Śubha","start":"12:53","end":"14:17","startHours":12.878118754343703,"endHours":14.286643111220545,"quality":"auspicious"},{"name":"Roga","start":"14:17","end":"15:42","startHours":14.286643111220545,"endHours":15.695167468097386,"quality":"inauspicious"},{"name":"Udveg","start":"15:42","end":"17:06","startHours":15.695167468097386,"endHours":17.103691824974227,"quality":"inauspicious"},{"name":"Chala","start":"17:06","end":"18:31","startHours":17.103691824974227,"endHours":18.51221618185107,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"18:31","end":"20:06","startHours":18.51221618185107,"endHours":20.103691824974227,"quality":"inauspicious"},{"name":"Udveg","start":"20:06","end":"21:42","startHours":20.103691824974227,"endHours":21.695167468097388,"quality":"inauspicious"},{"name":"Chala","start":"21:42","end":"23:17","startHours":21.695167468097388,"endHours":23.286643111220545,"quality":"neutral"},{"name":"Labha","start":"23:17","end":"00:53","startHours":23.286643111220545,"endHours":24.878118754343703,"quality":"auspicious"},{"name":"Amṛta","start":"00:53","end":"02:28","startHours":24.878118754343703,"endHours":26.46959439746686,"quality":"auspicious"},{"name":"Kāla","start":"02:28","end":"04:04","startHours":26.46959439746686,"endHours":28.061070040590018,"quality":"inauspicious"},{"name":"Śubha","start":"04:04","end":"05:39","startHours":28.061070040590018,"endHours":29.65254568371318,"quality":"auspicious"},{"name":"Roga","start":"05:39","end":"07:15","startHours":29.65254568371318,"endHours":31.244021326836336,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:15","end":"08:15","startHours":7.244021326836336,"endHours":8.244021326836336,"planetary_lord":"Venus"},{"name":"Hora 2","start":"08:15","end":"09:15","startHours":8.244021326836336,"endHours":9.244021326836336,"planetary_lord":"Sun"},{"name":"Hora 3","start":"09:15","end":"10:15","startHours":9.244021326836336,"endHours":10.244021326836336,"planetary_lord":"Mars"},{"name":"Hora 4","start":"10:15","end":"11:15","startHours":10.244021326836336,"endHours":11.244021326836336,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"11:15","end":"12:15","startHours":11.244021326836336,"endHours":12.244021326836336,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"12:15","end":"13:15","startHours":12.244021326836336,"endHours":13.244021326836336,"planetary_lord":"Moon"},{"name":"Hora 7","start":"13:15","end":"14:15","startHours":13.244021326836336,"endHours":14.244021326836336,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"14:15","end":"15:15","startHours":14.244021326836336,"endHours":15.244021326836336,"planetary_lord":"Venus"},{"name":"Hora 9","start":"15:15","end":"16:15","startHours":15.244021326836336,"endHours":16.244021326836336,"planetary_lord":"Sun"},{"name":"Hora 10","start":"16:15","end":"17:15","startHours":16.244021326836336,"endHours":17.244021326836336,"planetary_lord":"Mars"},{"name":"Hora 11","start":"17:15","end":"18:15","startHours":17.244021326836336,"endHours":18.244021326836336,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"18:15","end":"19:15","startHours":18.244021326836336,"endHours":19.244021326836336,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"19:15","end":"20:15","startHours":19.244021326836336,"endHours":20.244021326836336,"planetary_lord":"Moon"},{"name":"Hora 14","start":"20:15","end":"21:15","startHours":20.244021326836336,"endHours":21.244021326836336,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"21:15","end":"22:15","startHours":21.244021326836336,"endHours":22.244021326836336,"planetary_lord":"Venus"},{"name":"Hora 16","start":"22:15","end":"23:15","startHours":22.244021326836336,"endHours":23.244021326836336,"planetary_lord":"Sun"},{"name":"Hora 17","start":"23:15","end":"00:15","startHours":23.244021326836336,"endHours":24.244021326836336,"planetary_lord":"Mars"},{"name":"Hora 18","start":"00:15","end":"01:15","startHours":24.244021326836336,"endHours":25.244021326836336,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"01:15","end":"02:15","startHours":25.244021326836336,"endHours":26.244021326836336,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"02:15","end":"03:15","startHours":26.244021326836336,"endHours":27.244021326836336,"planetary_lord":"Moon"},{"name":"Hora 21","start":"03:15","end":"04:15","startHours":27.244021326836336,"endHours":28.244021326836336,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"04:15","end":"05:15","startHours":28.244021326836336,"endHours":29.244021326836336,"planetary_lord":"Venus"},{"name":"Hora 23","start":"05:15","end":"06:15","startHours":29.244021326836336,"endHours":30.244021326836336,"planetary_lord":"Sun"},{"name":"Hora 24","start":"06:15","end":"07:15","startHours":30.244021326836336,"endHours":31.244021326836336,"planetary_lord":"Mars"}],"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":"West (Paścim)","chandraVasa":"South-West","rahuVasa":"South-East","anandadiYoga":{"name":"Kāṇa","quality":"Inauspicious"},"tropicalRitu":"Śiśira (Winter) (tropical)","vedicRitu":"Śiśira (Winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-17.784166190813657,"eotMinutes":-14.599525260622107,"ayanamsa":-47.8919}},"calendars":{"vikram_samvat":-3079,"saka_samvat":-3214,"bengali_samvat":-3729,"malayalam_era":-3960,"nanakshahi_year":-4605,"lunar_month":"Caitra","lunar_month_paksha_full":"Caitra Kṛṣṇa 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":"Mīna (Paṅkuṇi)","ritu":"Vasanta (Spring)","display_summary":"Caitra Kṛṣṇa Caturdaśī · Vikram -3079 undefined · Śaka -3214 undefined"},"festivals":[{"id":"masika-shivaratri","name":"Māsika Śivarātri","name_sanskrit":"मासिक शिवरात्रि","tradition":"Shaiva","associated_deity":"Śiva","significance":"Monthly Śiva observance.","vrata":true,"detection":{"tithi_number":29,"tithi_paksha":"Kṛṣṇa"},"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":[]},"validity":{"eternal":true,"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, 3137 BCE · Thane, Maharashtra · Vidhyamitra","description":"February 13, 3137 BCE for Thane, Maharashtra: Kṛṣṇa Caturdaśī, sūryodaya 07:15, sūryāsta 18:31.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/thane/-3136-02-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/thane/-3136-02-13","sa":"https://sa.vidhyamitra.com/city/thane/-3136-02-13","hi":"https://hi.vidhyamitra.com/city/thane/-3136-02-13","x-default":"https://vidhyamitra.com/city/thane/-3136-02-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T22:55:09.157Z","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":"2026-05-31T22:55:09.157Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T22:55:09.157Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}