{"id":"vidhyamitra:city-day:phoenix:2011-02-28:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/phoenix/2011-02-28","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2011-02-28","date_display":"February 28, 2011 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":2011,"month":2,"day":28,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2455620.770833,"kali_year":5112,"ahargana":1867155.2708,"sun":{"sidereal_longitude":315.2058,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":259.3981,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":26,"name":"Ekādaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ekādaśī","elongation_degrees":304.1922,"elapsed_within_tithi_degrees":4.1922},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2,"moon_longitude":259.3981,"elapsed_within_degrees":6.0647},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":214.6039},"karana":{"half_tithi_index":50,"name":"Bava"},"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":2011,"month":2,"day":28,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2455620.770833,"ahargana":1867155.2708,"kali_year":5112,"ayanamsa_lahiri":24.0089,"grahas":{"sun":{"sidereal_longitude":315.08228600000007,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":261.3564859999999,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3},"retrograde":false,"latitude":0.8015},"mars":{"sidereal_longitude":309.7839859999999,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":317.19558600000005,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":343.549086,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":273.37528599999996,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":172.059486,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":true},"rahu":{"sidereal_longitude":249.1284,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":69.1284,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","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":2011,"month":2,"day":28,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2455620.770833,"kali_year":5112,"ahargana":1867155.2708,"sun":{"sidereal_longitude":315.2058,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":259.3981,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":26,"name":"Ekādaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ekādaśī","elongation_degrees":304.1922,"elapsed_within_tithi_degrees":4.1922},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2,"moon_longitude":259.3981,"elapsed_within_degrees":6.0647},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":214.6039},"karana":{"half_tithi_index":50,"name":"Bava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":0.801,"elongation":55.808},"lunar":{"type":"lunar","occurs":false,"moon_latitude":0.801,"opposition_distance":124.192}},"eclipse_window_40days":[]},"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":"06:59","sunsetLocal":"18:24","solarNoonLocal":"12:42","dayLengthHours":11.410232499644557,"dayLengthDisplay":"11 Hours 24 Mins 37 Secs","nightLengthDisplay":"12 Hours 35 Mins 23 Secs","moonriseLocal":"04:07","moonsetLocal":"14:06","rahuKala":{"name":"Rāhu Kāla","start":"08:25","end":"09:50","startHours":8.413147126400414,"endHours":9.839426188855983,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"11:16","end":"12:42","startHours":11.265705251311552,"endHours":12.691984313767122,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"14:07","end":"15:33","startHours":14.118263376222693,"endHours":15.544542438678262,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:39","end":"10:02","startHours":9.64925564719524,"endHours":10.029596730516726,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:28","end":"07:46","startHours":7.4622944180967,"endHours":7.766567284753888,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:19","end":"13:04","startHours":12.311643230445638,"endHours":13.072325397088607,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:28","end":"06:14","startHours":5.465503730658902,"endHours":6.226185897301873,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:02","end":"06:59","startHours":6.036015355641131,"endHours":6.9868680639448435,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:36","end":"15:21","startHours":14.59368973037455,"endHours":15.35437189701752,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:12","end":"18:36","startHours":18.1971005635894,"endHours":18.5971005635894,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:24","end":"18:52","startHours":18.3971005635894,"endHours":18.872526917741258,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:09","end":"19:54","startHours":18.1471005635894,"endHours":19.8971005635894,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:19","end":"01:04","startHours":24.311643230445636,"endHours":25.07232539708861,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"06:59","end":"08:25","startHours":6.9868680639448435,"endHours":8.413147126400414,"quality":"auspicious"},{"name":"Kāla","start":"08:25","end":"09:50","startHours":8.413147126400414,"endHours":9.839426188855983,"quality":"inauspicious"},{"name":"Śubha","start":"09:50","end":"11:16","startHours":9.839426188855983,"endHours":11.265705251311552,"quality":"auspicious"},{"name":"Roga","start":"11:16","end":"12:42","startHours":11.265705251311552,"endHours":12.691984313767122,"quality":"inauspicious"},{"name":"Udveg","start":"12:42","end":"14:07","startHours":12.691984313767122,"endHours":14.118263376222693,"quality":"inauspicious"},{"name":"Chala","start":"14:07","end":"15:33","startHours":14.118263376222693,"endHours":15.544542438678262,"quality":"neutral"},{"name":"Labha","start":"15:33","end":"16:58","startHours":15.544542438678262,"endHours":16.97082150113383,"quality":"auspicious"},{"name":"Amṛta","start":"16:58","end":"18:24","startHours":16.97082150113383,"endHours":18.3971005635894,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:24","end":"19:58","startHours":18.3971005635894,"endHours":19.97082150113383,"quality":"neutral"},{"name":"Labha","start":"19:58","end":"21:33","startHours":19.97082150113383,"endHours":21.544542438678263,"quality":"auspicious"},{"name":"Amṛta","start":"21:33","end":"23:07","startHours":21.544542438678263,"endHours":23.118263376222693,"quality":"auspicious"},{"name":"Kāla","start":"23:07","end":"00:42","startHours":23.118263376222693,"endHours":24.691984313767122,"quality":"inauspicious"},{"name":"Śubha","start":"00:42","end":"02:16","startHours":24.691984313767122,"endHours":26.26570525131155,"quality":"auspicious"},{"name":"Roga","start":"02:16","end":"03:50","startHours":26.26570525131155,"endHours":27.83942618885598,"quality":"inauspicious"},{"name":"Udveg","start":"03:50","end":"05:25","startHours":27.83942618885598,"endHours":29.413147126400414,"quality":"inauspicious"},{"name":"Chala","start":"05:25","end":"06:59","startHours":29.413147126400414,"endHours":30.986868063944843,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"06:59","end":"07:59","startHours":6.9868680639448435,"endHours":7.9868680639448435,"planetary_lord":"Moon"},{"name":"Hora 2","start":"07:59","end":"08:59","startHours":7.9868680639448435,"endHours":8.986868063944843,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"08:59","end":"09:59","startHours":8.986868063944843,"endHours":9.986868063944843,"planetary_lord":"Venus"},{"name":"Hora 4","start":"09:59","end":"10:59","startHours":9.986868063944843,"endHours":10.986868063944843,"planetary_lord":"Sun"},{"name":"Hora 5","start":"10:59","end":"11:59","startHours":10.986868063944843,"endHours":11.986868063944843,"planetary_lord":"Mars"},{"name":"Hora 6","start":"11:59","end":"12:59","startHours":11.986868063944843,"endHours":12.986868063944843,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"12:59","end":"13:59","startHours":12.986868063944843,"endHours":13.986868063944843,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"13:59","end":"14:59","startHours":13.986868063944843,"endHours":14.986868063944843,"planetary_lord":"Moon"},{"name":"Hora 9","start":"14:59","end":"15:59","startHours":14.986868063944843,"endHours":15.986868063944843,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"15:59","end":"16:59","startHours":15.986868063944843,"endHours":16.986868063944843,"planetary_lord":"Venus"},{"name":"Hora 11","start":"16:59","end":"17:59","startHours":16.986868063944843,"endHours":17.986868063944843,"planetary_lord":"Sun"},{"name":"Hora 12","start":"17:59","end":"18:59","startHours":17.986868063944843,"endHours":18.986868063944843,"planetary_lord":"Mars"},{"name":"Hora 13","start":"18:59","end":"19:59","startHours":18.986868063944843,"endHours":19.986868063944843,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"19:59","end":"20:59","startHours":19.986868063944843,"endHours":20.986868063944843,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"20:59","end":"21:59","startHours":20.986868063944843,"endHours":21.986868063944843,"planetary_lord":"Moon"},{"name":"Hora 16","start":"21:59","end":"22:59","startHours":21.986868063944843,"endHours":22.986868063944843,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"22:59","end":"23:59","startHours":22.986868063944843,"endHours":23.986868063944843,"planetary_lord":"Venus"},{"name":"Hora 18","start":"23:59","end":"00:59","startHours":23.986868063944843,"endHours":24.986868063944843,"planetary_lord":"Sun"},{"name":"Hora 19","start":"00:59","end":"01:59","startHours":24.986868063944843,"endHours":25.986868063944843,"planetary_lord":"Mars"},{"name":"Hora 20","start":"01:59","end":"02:59","startHours":25.986868063944843,"endHours":26.986868063944843,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"02:59","end":"03:59","startHours":26.986868063944843,"endHours":27.986868063944843,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"03:59","end":"04:59","startHours":27.986868063944843,"endHours":28.986868063944843,"planetary_lord":"Moon"},{"name":"Hora 23","start":"04:59","end":"05:59","startHours":28.986868063944843,"endHours":29.986868063944843,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"05:59","end":"06:59","startHours":29.986868063944843,"endHours":30.986868063944843,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Uttara Phalgunī","Hasta","Citrā","Svātī","Viśākhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Dhanu","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Makara","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"East","rahuVasa":"North-East","anandadiYoga":{"name":"Mātaṇga","quality":"Auspicious"},"drikRitu":"Śiśira (Winter) (Drik)","vedicRitu":"Śiśira (Winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-8.160320363159927,"eotMinutes":-13.223058826027486,"ayanamsa":24.0089}},"calendars":{"vikram_samvat":2068,"vikram_samvatsara":"Krodhi","saka_samvat":1933,"saka_samvatsara":"Khara","bengali_samvat":1418,"malayalam_era":1187,"nanakshahi_year":542,"lunar_month":"Phālguna","lunar_month_paksha_full":"Phālguna Kṛṣṇa Pakṣa","solar_month":"Kumbha (Māsi)","ritu":"Śiśira (Winter)","display_summary":"Phālguna Kṛṣṇa Ekādaśī · Vikram 2068 Krodhi · Śaka 1933 Khara"},"festivals":[{"id":"vijaya-ekadashi","name":"Vijayā Ekādaśī","name_sanskrit":"विजया एकादशी","tradition":"Vaishnava","associated_deity":"Bhagavān Rāma","significance":"Rāma observed this before crossing the ocean to Laṅkā.","vrata":true,"detection":{"tithi_number":26,"tithi_paksha":"Kṛṣṇa","lunar_month":"Phālguna"},"precedence":4},{"id":"ekadashi","name":"Ekādaśī","name_sanskrit":"एकादशी","tradition":"Vaishnava","associated_deity":"Bhagavān Viṣṇu","significance":"Sacred to Bhagavān Viṣṇu; vrata for purification.","vrata":true,"detection":{"any_of":[{"tithi_number":11},{"tithi_number":26}]},"precedence":5},{"id":"kumbha-sankranti","name":"Kumbha Saṅkrānti","name_sanskrit":"कुम्भ सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Aquarius; Kumbha-māsa begins.","vrata":false,"detection":{"sun_rashi":"Kumbha"},"precedence":5}],"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":[]},"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 28, 2011 CE · Phoenix, USA · Vidhyamitra","description":"February 28, 2011 CE for Phoenix, USA: Kṛṣṇa Ekādaśī, sūryodaya 06:59, sūryāsta 18:24.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/phoenix/2011-02-28","hreflang_alternates":{"en":"https://vidhyamitra.com/city/phoenix/2011-02-28","sa":"https://sa.vidhyamitra.com/city/phoenix/2011-02-28","hi":"https://hi.vidhyamitra.com/city/phoenix/2011-02-28","x-default":"https://vidhyamitra.com/city/phoenix/2011-02-28"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T14:01:48.541Z","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":"2026-05-15T14:01:48.541Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T14:01:48.541Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}