{"id":"vidhyamitra:city-day:phoenix:2027-04-15:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/phoenix/2027-04-15","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2027-04-15","date_display":"April 15, 2027 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":2027,"month":4,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2461510.770833,"kali_year":5128,"ahargana":1873045.2708,"sun":{"sidereal_longitude":0.6937,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":105.2899,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":9,"name":"Navamī","paksha":"Śukla","full_name":"Śukla Navamī","elongation_degrees":104.5962,"elapsed_within_tithi_degrees":8.5962},"nakshatra":{"number":8,"name":"Puṣya","pada":4,"moon_longitude":105.2899,"elapsed_within_degrees":11.9566},"yoga":{"number":8,"name":"Dhṛti","sum_longitude":105.9837},"karana":{"half_tithi_index":17,"name":"Kaulava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"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":2027,"month":4,"day":15,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2461510.770833,"ahargana":1873045.2708,"kali_year":5128,"ayanamsa_lahiri":24.2342,"grahas":{"sun":{"sidereal_longitude":0.6259450000000015,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false},"moon":{"sidereal_longitude":104.88314500000001,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":4},"retrograde":false,"latitude":0.9161},"mars":{"sidereal_longitude":117.36084499999998,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":4},"retrograde":true},"mercury":{"sidereal_longitude":345.910945,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":112.54544499999997,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":2},"retrograde":true},"venus":{"sidereal_longitude":329.22184500000003,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":354.413445,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":297.0478,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":117.0478,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","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":2027,"month":4,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2461510.770833,"kali_year":5128,"ahargana":1873045.2708,"sun":{"sidereal_longitude":0.6937,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":105.2899,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":9,"name":"Navamī","paksha":"Śukla","full_name":"Śukla Navamī","elongation_degrees":104.5962,"elapsed_within_tithi_degrees":8.5962},"nakshatra":{"number":8,"name":"Puṣya","pada":4,"moon_longitude":105.2899,"elapsed_within_degrees":11.9566},"yoga":{"number":8,"name":"Dhṛti","sum_longitude":105.9837},"karana":{"half_tithi_index":17,"name":"Kaulava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":0.916,"elongation":104.596},"lunar":{"type":"lunar","occurs":false,"moon_latitude":0.916,"opposition_distance":75.404}},"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":"05:59","sunsetLocal":"18:58","solarNoonLocal":"12:29","dayLengthHours":12.993683329364089,"dayLengthDisplay":"12 Hours 59 Mins 37 Secs","nightLengthDisplay":"11 Hours 00 Mins 23 Secs","moonriseLocal":"12:33","moonsetLocal":"02:18","rahuKala":{"name":"Rāhu Kāla","start":"14:06","end":"15:43","startHours":14.09981248380063,"endHours":15.724022899971139,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"05:59","end":"07:36","startHours":5.978760402948073,"endHours":7.6029708191185845,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:14","end":"10:51","startHours":9.227181235289095,"endHours":10.851391651459608,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:01","end":"09:27","startHours":9.01061984646636,"endHours":9.443742624111831,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:31","end":"06:52","startHours":6.5201638750049105,"endHours":6.866662097121286,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:03","end":"12:55","startHours":12.042479289984648,"endHours":12.908724845275586,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:15","end":"05:07","startHours":4.246269292366195,"endHours":5.112514847657134,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:54","end":"05:59","startHours":4.895953458834399,"endHours":5.978760402948073,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:38","end":"15:30","startHours":14.641215955857465,"endHours":15.507461511148405,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:46","end":"19:10","startHours":18.772443732312162,"endHours":19.17244373231216,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:58","end":"19:31","startHours":18.97244373231216,"endHours":19.513847204369,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:43","end":"20:28","startHours":18.72244373231216,"endHours":20.47244373231216,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:03","end":"00:55","startHours":24.042479289984648,"endHours":24.908724845275586,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"05:59","end":"07:36","startHours":5.978760402948073,"endHours":7.6029708191185845,"quality":"auspicious"},{"name":"Roga","start":"07:36","end":"09:14","startHours":7.6029708191185845,"endHours":9.227181235289095,"quality":"inauspicious"},{"name":"Udveg","start":"09:14","end":"10:51","startHours":9.227181235289095,"endHours":10.851391651459608,"quality":"inauspicious"},{"name":"Chala","start":"10:51","end":"12:29","startHours":10.851391651459608,"endHours":12.475602067630117,"quality":"neutral"},{"name":"Labha","start":"12:29","end":"14:06","startHours":12.475602067630117,"endHours":14.09981248380063,"quality":"auspicious"},{"name":"Amṛta","start":"14:06","end":"15:43","startHours":14.09981248380063,"endHours":15.724022899971139,"quality":"auspicious"},{"name":"Kāla","start":"15:43","end":"17:21","startHours":15.724022899971139,"endHours":17.348233316141652,"quality":"inauspicious"},{"name":"Śubha","start":"17:21","end":"18:58","startHours":17.348233316141652,"endHours":18.97244373231216,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"18:58","end":"20:21","startHours":18.97244373231216,"endHours":20.348233316141652,"quality":"auspicious"},{"name":"Kāla","start":"20:21","end":"21:43","startHours":20.348233316141652,"endHours":21.72402289997114,"quality":"inauspicious"},{"name":"Śubha","start":"21:43","end":"23:06","startHours":21.72402289997114,"endHours":23.099812483800626,"quality":"auspicious"},{"name":"Roga","start":"23:06","end":"00:29","startHours":23.099812483800626,"endHours":24.475602067630117,"quality":"inauspicious"},{"name":"Udveg","start":"00:29","end":"01:51","startHours":24.475602067630117,"endHours":25.851391651459608,"quality":"inauspicious"},{"name":"Chala","start":"01:51","end":"03:14","startHours":25.851391651459608,"endHours":27.227181235289095,"quality":"neutral"},{"name":"Labha","start":"03:14","end":"04:36","startHours":27.227181235289095,"endHours":28.602970819118582,"quality":"auspicious"},{"name":"Amṛta","start":"04:36","end":"05:59","startHours":28.602970819118582,"endHours":29.978760402948073,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:59","end":"06:59","startHours":5.978760402948073,"endHours":6.978760402948073,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"06:59","end":"07:59","startHours":6.978760402948073,"endHours":7.978760402948073,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"07:59","end":"08:59","startHours":7.978760402948073,"endHours":8.978760402948073,"planetary_lord":"Moon"},{"name":"Hora 4","start":"08:59","end":"09:59","startHours":8.978760402948073,"endHours":9.978760402948073,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"09:59","end":"10:59","startHours":9.978760402948073,"endHours":10.978760402948073,"planetary_lord":"Venus"},{"name":"Hora 6","start":"10:59","end":"11:59","startHours":10.978760402948073,"endHours":11.978760402948073,"planetary_lord":"Sun"},{"name":"Hora 7","start":"11:59","end":"12:59","startHours":11.978760402948073,"endHours":12.978760402948073,"planetary_lord":"Mars"},{"name":"Hora 8","start":"12:59","end":"13:59","startHours":12.978760402948073,"endHours":13.978760402948073,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"13:59","end":"14:59","startHours":13.978760402948073,"endHours":14.978760402948073,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"14:59","end":"15:59","startHours":14.978760402948073,"endHours":15.978760402948073,"planetary_lord":"Moon"},{"name":"Hora 11","start":"15:59","end":"16:59","startHours":15.978760402948073,"endHours":16.978760402948073,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"16:59","end":"17:59","startHours":16.978760402948073,"endHours":17.978760402948073,"planetary_lord":"Venus"},{"name":"Hora 13","start":"17:59","end":"18:59","startHours":17.978760402948073,"endHours":18.978760402948073,"planetary_lord":"Sun"},{"name":"Hora 14","start":"18:59","end":"19:59","startHours":18.978760402948073,"endHours":19.978760402948073,"planetary_lord":"Mars"},{"name":"Hora 15","start":"19:59","end":"20:59","startHours":19.978760402948073,"endHours":20.978760402948073,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"20:59","end":"21:59","startHours":20.978760402948073,"endHours":21.978760402948073,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"21:59","end":"22:59","startHours":21.978760402948073,"endHours":22.978760402948073,"planetary_lord":"Moon"},{"name":"Hora 18","start":"22:59","end":"23:59","startHours":22.978760402948073,"endHours":23.978760402948073,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"23:59","end":"00:59","startHours":23.978760402948073,"endHours":24.978760402948073,"planetary_lord":"Venus"},{"name":"Hora 20","start":"00:59","end":"01:59","startHours":24.978760402948073,"endHours":25.978760402948073,"planetary_lord":"Sun"},{"name":"Hora 21","start":"01:59","end":"02:59","startHours":25.978760402948073,"endHours":26.978760402948073,"planetary_lord":"Mars"},{"name":"Hora 22","start":"02:59","end":"03:59","startHours":26.978760402948073,"endHours":27.978760402948073,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"03:59","end":"04:59","startHours":27.978760402948073,"endHours":28.978760402948073,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"04:59","end":"05:59","startHours":28.978760402948073,"endHours":29.978760402948073,"planetary_lord":"Moon"}],"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":["Meṣa","Vṛṣabha","Karka","Kanyā","Dhanu","Makara"],"unfavorable_rashis":["Mithuna","Siṃha","Tulā","Vṛścika","Kumbha","Mīna"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"South-West","rahuVasa":"North-West","anandadiYoga":{"name":"Mātaṇga","quality":"Auspicious"},"drikRitu":"Vasanta (Spring)","vedicRitu":"Vasanta (Spring)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":9.625562045005607,"eotMinutes":-0.240124057807095,"ayanamsa":24.2342}},"calendars":{"vikram_samvat":2084,"vikram_samvatsara":"Raudra","saka_samvat":1949,"saka_samvatsara":"Plavaṅga","bengali_samvat":1434,"malayalam_era":1203,"nanakshahi_year":558,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Śukla Pakṣa","solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Vasanta (Spring)","display_summary":"Vaiśākha Śukla Navamī · Vikram 2084 Raudra · Śaka 1949 Plavaṅga"},"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":"Meṣa"},"precedence":1},{"id":"sita-navami","name":"Sītā Navamī","name_sanskrit":"सीता नवमी","tradition":"Vaishnava","associated_deity":"Sītā Devī (Lakṣmī as Bhū-suta)","significance":"Devī Sītā's manifestation in Mithilā; rāmāvatāra-kalatra.","vrata":true,"detection":{"tithi_number":9,"tithi_paksha":"Śukla","lunar_month":"Vaiśākha"},"precedence":2,"sources":["Vālmīki Rāmāyaṇa, Bāla-Kāṇḍa 66"]},{"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":"Meṣa"},"precedence":2},{"id":"madhva-jayanti","name":"Madhvācārya Jayantī","name_sanskrit":"मध्वाचार्य जयन्ती","tradition":"Vaishnava","associated_deity":"Madhvācārya (Dvaita)","significance":"Birth of Madhvācārya; Dvaita-pratiṣṭhāpaka. Vaiśākha Śukla 9.","vrata":false,"detection":{"tithi_number":9,"tithi_paksha":"Śukla","lunar_month":"Vaiśākha"},"precedence":4}],"todays_walk":{"walk":{"id":"guru-walk","name":"Bṛhaspati Walk","name_sanskrit":"गुरु यात्रा","type":"graha","description":"Wisdom transmission + BG 4.34.","step_count":8,"url":"/walk/guru-walk"},"reason":"Guruvāra (Thursday) — 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 Śukla Navamī","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 April 15, 2027 CE · Phoenix, USA · Vidhyamitra","description":"April 15, 2027 CE for Phoenix, USA: Śukla Navamī, sūryodaya 05:59, sūryāsta 18:58.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/phoenix/2027-04-15","hreflang_alternates":{"en":"https://vidhyamitra.com/city/phoenix/2027-04-15","sa":"https://sa.vidhyamitra.com/city/phoenix/2027-04-15","hi":"https://hi.vidhyamitra.com/city/phoenix/2027-04-15","x-default":"https://vidhyamitra.com/city/phoenix/2027-04-15"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-14T15:43:50.546Z","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":"2026-05-14T15:43:50.546Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-14T15:43:50.546Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}