{"id":"vidhyamitra:city-day:phoenix:2147-02-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/phoenix/2147-02-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2147-02-13","date_display":"February 13, 2147 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":2147,"month":2,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2505278.770833,"kali_year":5248,"ahargana":1916813.2708,"sun":{"sidereal_longitude":297.7966,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":87.4034,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":149.6068,"elapsed_within_tithi_degrees":5.6068},"nakshatra":{"number":7,"name":"Punarvasu","pada":3,"moon_longitude":87.4034,"elapsed_within_degrees":7.4034},"yoga":{"number":2,"name":"Prīti","sum_longitude":25.1999},"karana":{"half_tithi_index":24,"name":"Kaulava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"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":2147,"month":2,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2505278.770833,"ahargana":1916813.2708,"kali_year":5248,"ayanamsa_lahiri":25.9081,"grahas":{"sun":{"sidereal_longitude":298.063885,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":88.91448500000001,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":3},"retrograde":false,"latitude":-3.4761},"mars":{"sidereal_longitude":18.962184999999977,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":270.31328499999995,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":162.38038499999993,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":true},"venus":{"sidereal_longitude":259.3788850000001,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":12.866985,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":138.0086,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":318.0086,"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":2147,"month":2,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2505278.770833,"kali_year":5248,"ahargana":1916813.2708,"sun":{"sidereal_longitude":297.7966,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":87.4034,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":149.6068,"elapsed_within_tithi_degrees":5.6068},"nakshatra":{"number":7,"name":"Punarvasu","pada":3,"moon_longitude":87.4034,"elapsed_within_degrees":7.4034},"yoga":{"number":2,"name":"Prīti","sum_longitude":25.1999},"karana":{"half_tithi_index":24,"name":"Kaulava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.476,"elongation":149.607},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.476,"opposition_distance":30.393}},"eclipse_window_40days":[{"offset_days":17,"type":"solar","occurs":true,"moon_latitude":0.316,"elongation":1.932}]},"city":{"slug":"phoenix","name":"Phoenix, USA","lat":33.4484,"lon":-112.074,"tz_offset_hours":-7,"country":"US","tier":"diaspora"},"tier2":{"city":{"slug":"phoenix","name":"Phoenix, USA","lat":33.4484,"lon":-112.074,"tz_offset_hours":-7,"country":"US","tier":"diaspora"},"sunriseLocal":"07:15","sunsetLocal":"18:10","solarNoonLocal":"12:43","dayLengthHours":10.919027029843292,"dayLengthDisplay":"10 Hours 55 Mins 08 Secs","nightLengthDisplay":"13 Hours 04 Mins 52 Secs","moonriseLocal":"15:44","moonsetLocal":"05:49","rahuKala":{"name":"Rāhu Kāla","start":"08:37","end":"09:59","startHours":8.62029028481913,"endHours":9.985168663549544,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"11:21","end":"12:43","startHours":11.350047042279954,"endHours":12.714925421010367,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"14:05","end":"15:27","startHours":14.079803799740777,"endHours":15.44468217847119,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:48","end":"10:10","startHours":9.803184879718822,"endHours":10.167152447380264,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:43","end":"08:00","startHours":7.710371365665524,"endHours":8.00154541979468,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:21","end":"13:05","startHours":12.350957853348923,"endHours":13.07889298867181,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:48","end":"06:32","startHours":5.799541635442948,"endHours":6.527476770765834,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:21","end":"07:15","startHours":6.345492986935112,"endHours":7.25541190608872,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:32","end":"15:16","startHours":14.534763259317582,"endHours":15.262698394640468,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:58","end":"18:22","startHours":17.974438935932014,"endHours":18.374438935932012,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:10","end":"18:38","startHours":18.174438935932013,"endHours":18.629398395508815,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:55","end":"19:40","startHours":17.924438935932013,"endHours":19.674438935932013,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:21","end":"01:05","startHours":24.350957853348923,"endHours":25.07889298867181,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"07:15","end":"08:37","startHours":7.25541190608872,"endHours":8.62029028481913,"quality":"auspicious"},{"name":"Kāla","start":"08:37","end":"09:59","startHours":8.62029028481913,"endHours":9.985168663549544,"quality":"inauspicious"},{"name":"Śubha","start":"09:59","end":"11:21","startHours":9.985168663549544,"endHours":11.350047042279954,"quality":"auspicious"},{"name":"Roga","start":"11:21","end":"12:43","startHours":11.350047042279954,"endHours":12.714925421010367,"quality":"inauspicious"},{"name":"Udveg","start":"12:43","end":"14:05","startHours":12.714925421010367,"endHours":14.079803799740777,"quality":"inauspicious"},{"name":"Chala","start":"14:05","end":"15:27","startHours":14.079803799740777,"endHours":15.44468217847119,"quality":"neutral"},{"name":"Labha","start":"15:27","end":"16:49","startHours":15.44468217847119,"endHours":16.8095605572016,"quality":"auspicious"},{"name":"Amṛta","start":"16:49","end":"18:10","startHours":16.8095605572016,"endHours":18.174438935932013,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:10","end":"19:49","startHours":18.174438935932013,"endHours":19.8095605572016,"quality":"neutral"},{"name":"Labha","start":"19:49","end":"21:27","startHours":19.8095605572016,"endHours":21.44468217847119,"quality":"auspicious"},{"name":"Amṛta","start":"21:27","end":"23:05","startHours":21.44468217847119,"endHours":23.07980379974078,"quality":"auspicious"},{"name":"Kāla","start":"23:05","end":"00:43","startHours":23.07980379974078,"endHours":24.714925421010367,"quality":"inauspicious"},{"name":"Śubha","start":"00:43","end":"02:21","startHours":24.714925421010367,"endHours":26.350047042279954,"quality":"auspicious"},{"name":"Roga","start":"02:21","end":"03:59","startHours":26.350047042279954,"endHours":27.985168663549544,"quality":"inauspicious"},{"name":"Udveg","start":"03:59","end":"05:37","startHours":27.985168663549544,"endHours":29.620290284819134,"quality":"inauspicious"},{"name":"Chala","start":"05:37","end":"07:15","startHours":29.620290284819134,"endHours":31.25541190608872,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"07:15","end":"08:15","startHours":7.25541190608872,"endHours":8.255411906088721,"planetary_lord":"Moon"},{"name":"Hora 2","start":"08:15","end":"09:15","startHours":8.255411906088721,"endHours":9.255411906088721,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"09:15","end":"10:15","startHours":9.255411906088721,"endHours":10.255411906088721,"planetary_lord":"Venus"},{"name":"Hora 4","start":"10:15","end":"11:15","startHours":10.255411906088721,"endHours":11.255411906088721,"planetary_lord":"Sun"},{"name":"Hora 5","start":"11:15","end":"12:15","startHours":11.255411906088721,"endHours":12.255411906088721,"planetary_lord":"Mars"},{"name":"Hora 6","start":"12:15","end":"13:15","startHours":12.255411906088721,"endHours":13.255411906088721,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"13:15","end":"14:15","startHours":13.255411906088721,"endHours":14.255411906088721,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"14:15","end":"15:15","startHours":14.255411906088721,"endHours":15.255411906088721,"planetary_lord":"Moon"},{"name":"Hora 9","start":"15:15","end":"16:15","startHours":15.255411906088721,"endHours":16.25541190608872,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"16:15","end":"17:15","startHours":16.25541190608872,"endHours":17.25541190608872,"planetary_lord":"Venus"},{"name":"Hora 11","start":"17:15","end":"18:15","startHours":17.25541190608872,"endHours":18.25541190608872,"planetary_lord":"Sun"},{"name":"Hora 12","start":"18:15","end":"19:15","startHours":18.25541190608872,"endHours":19.25541190608872,"planetary_lord":"Mars"},{"name":"Hora 13","start":"19:15","end":"20:15","startHours":19.25541190608872,"endHours":20.25541190608872,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"20:15","end":"21:15","startHours":20.25541190608872,"endHours":21.25541190608872,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"21:15","end":"22:15","startHours":21.25541190608872,"endHours":22.25541190608872,"planetary_lord":"Moon"},{"name":"Hora 16","start":"22:15","end":"23:15","startHours":22.25541190608872,"endHours":23.25541190608872,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"23:15","end":"00:15","startHours":23.25541190608872,"endHours":24.25541190608872,"planetary_lord":"Venus"},{"name":"Hora 18","start":"00:15","end":"01:15","startHours":24.25541190608872,"endHours":25.25541190608872,"planetary_lord":"Sun"},{"name":"Hora 19","start":"01:15","end":"02:15","startHours":25.25541190608872,"endHours":26.25541190608872,"planetary_lord":"Mars"},{"name":"Hora 20","start":"02:15","end":"03:15","startHours":26.25541190608872,"endHours":27.25541190608872,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"03:15","end":"04:15","startHours":27.25541190608872,"endHours":28.25541190608872,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"04:15","end":"05:15","startHours":28.25541190608872,"endHours":29.25541190608872,"planetary_lord":"Moon"},{"name":"Hora 23","start":"05:15","end":"06:15","startHours":29.25541190608872,"endHours":30.25541190608872,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"06:15","end":"07:15","startHours":30.25541190608872,"endHours":31.25541190608872,"planetary_lord":"Venus"}],"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","Mithuna","Siṃha","Vṛścika","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Karka","Kanyā","Tulā","Makara","Kumbha"]},"dishaShool":"East (Pūrva)","chandraVasa":"South","rahuVasa":"North-East","anandadiYoga":{"name":"Chatra","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":-13.52906390268247,"eotMinutes":-14.599525260622107,"ayanamsa":25.9081}},"calendars":{"vikram_samvat":2204,"vikram_samvatsara":"Raudra","saka_samvat":2069,"saka_samvatsara":"Plavaṅga","bengali_samvat":1554,"malayalam_era":1323,"nanakshahi_year":678,"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 Trayodaśī · Vikram 2204 Raudra · Śaka 2069 Plavaṅga"},"festivals":[{"id":"pradosha-vrata","name":"Pradoṣa Vrata","name_sanskrit":"प्रदोष व्रत","tradition":"Shaiva","associated_deity":"Śiva","significance":"Twilight worship of Śiva on Trayodaśī.","vrata":true,"detection":{"any_of":[{"tithi_number":13},{"tithi_number":28}]},"precedence":7}],"todays_walk":{"walk":{"id":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7.","step_count":5,"url":"/walk/chandra-walk"},"reason":"Somavāra (Monday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-1626101-04-03","event":"Bhagavān Rāma's birth at Ayodhyā","chart_id":"rama","shared_marker":"same Punarvasu","url":"/day/-1626101-04-03","relevance":0.5}]},"validity":{"eternal":false,"location_specific":"phoenix"},"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, 2147 CE · Phoenix, USA · Vidhyamitra","description":"February 13, 2147 CE for Phoenix, USA: Śukla Trayodaśī, sūryodaya 07:15, sūryāsta 18:10.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/phoenix/2147-02-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/phoenix/2147-02-13","sa":"https://sa.vidhyamitra.com/city/phoenix/2147-02-13","hi":"https://hi.vidhyamitra.com/city/phoenix/2147-02-13","x-default":"https://vidhyamitra.com/city/phoenix/2147-02-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T11:13:38.463Z","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":"2026-05-31T11:13:38.463Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T11:13:38.463Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}