{"id":"vidhyamitra:city-day:phoenix:2155-04-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/phoenix/2155-04-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2155-04-13","date_display":"April 13, 2155 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":2155,"month":4,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2508259.770833,"kali_year":5256,"ahargana":1919794.2708,"sun":{"sidereal_longitude":356.666,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":120.737,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":11,"name":"Ekādaśī","paksha":"Śukla","full_name":"Śukla Ekādaśī","elongation_degrees":124.0711,"elapsed_within_tithi_degrees":4.0711},"nakshatra":{"number":10,"name":"Maghā","pada":1,"moon_longitude":120.737,"elapsed_within_degrees":0.737},"yoga":{"number":9,"name":"Śūla","sum_longitude":117.403},"karana":{"half_tithi_index":20,"name":"Vaṇija"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"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":2155,"month":4,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2508259.770833,"ahargana":1919794.2708,"kali_year":5256,"ayanamsa_lahiri":26.0221,"grahas":{"sun":{"sidereal_longitude":356.88358900000003,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false},"moon":{"sidereal_longitude":120.88448900000003,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":1},"retrograde":false,"latitude":2.8499},"mars":{"sidereal_longitude":147.045789,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":true},"mercury":{"sidereal_longitude":10.131088999999974,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":37.20658900000001,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":332.00798899999995,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":123.363789,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":340.0608,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":160.0608,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","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":2155,"month":4,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2508259.770833,"kali_year":5256,"ahargana":1919794.2708,"sun":{"sidereal_longitude":356.666,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":120.737,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":11,"name":"Ekādaśī","paksha":"Śukla","full_name":"Śukla Ekādaśī","elongation_degrees":124.0711,"elapsed_within_tithi_degrees":4.0711},"nakshatra":{"number":10,"name":"Maghā","pada":1,"moon_longitude":120.737,"elapsed_within_degrees":0.737},"yoga":{"number":9,"name":"Śūla","sum_longitude":117.403},"karana":{"half_tithi_index":20,"name":"Vaṇija"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.85,"elongation":124.071},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.85,"opposition_distance":55.929}},"eclipse_window_40days":[{"offset_days":-11,"type":"solar","occurs":true,"moon_latitude":0.5,"elongation":1.176}]},"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":"06:01","sunsetLocal":"18:57","solarNoonLocal":"12:29","dayLengthHours":12.927766467354957,"dayLengthDisplay":"12 Hours 55 Mins 40 Secs","nightLengthDisplay":"11 Hours 04 Mins 20 Secs","moonriseLocal":"14:08","moonsetLocal":"03:22","rahuKala":{"name":"Rāhu Kāla","start":"17:20","end":"18:57","startHours":17.33234260575318,"endHours":18.94831341417255,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:29","end":"14:06","startHours":12.484430180495071,"endHours":14.10040098891444,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:43","end":"17:20","startHours":15.71637179733381,"endHours":17.33234260575318,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:02","end":"09:28","startHours":9.037025789200415,"endHours":9.467951338112247,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:34","end":"06:54","startHours":6.559203882957382,"endHours":6.903944322086847,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:03","end":"12:55","startHours":12.05350463158324,"endHours":12.915355729406903,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:18","end":"05:10","startHours":4.296844751170264,"endHours":5.158695848993928,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:57","end":"06:01","startHours":4.943233074538012,"endHours":6.020546946817592,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:38","end":"15:30","startHours":14.639057925054228,"endHours":15.500909022877892,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:45","end":"19:09","startHours":18.74831341417255,"endHours":19.14831341417255,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:57","end":"19:29","startHours":18.94831341417255,"endHours":19.48697035031234,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:42","end":"20:27","startHours":18.69831341417255,"endHours":20.44831341417255,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:03","end":"00:55","startHours":24.053504631583237,"endHours":24.915355729406905,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:01","end":"07:38","startHours":6.020546946817592,"endHours":7.636517755236961,"quality":"inauspicious"},{"name":"Chala","start":"07:38","end":"09:15","startHours":7.636517755236961,"endHours":9.252488563656332,"quality":"neutral"},{"name":"Labha","start":"09:15","end":"10:52","startHours":9.252488563656332,"endHours":10.868459372075701,"quality":"auspicious"},{"name":"Amṛta","start":"10:52","end":"12:29","startHours":10.868459372075701,"endHours":12.484430180495071,"quality":"auspicious"},{"name":"Kāla","start":"12:29","end":"14:06","startHours":12.484430180495071,"endHours":14.10040098891444,"quality":"inauspicious"},{"name":"Śubha","start":"14:06","end":"15:43","startHours":14.10040098891444,"endHours":15.71637179733381,"quality":"auspicious"},{"name":"Roga","start":"15:43","end":"17:20","startHours":15.71637179733381,"endHours":17.33234260575318,"quality":"inauspicious"},{"name":"Udveg","start":"17:20","end":"18:57","startHours":17.33234260575318,"endHours":18.94831341417255,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:57","end":"20:20","startHours":18.94831341417255,"endHours":20.33234260575318,"quality":"auspicious"},{"name":"Roga","start":"20:20","end":"21:43","startHours":20.33234260575318,"endHours":21.71637179733381,"quality":"inauspicious"},{"name":"Udveg","start":"21:43","end":"23:06","startHours":21.71637179733381,"endHours":23.10040098891444,"quality":"inauspicious"},{"name":"Chala","start":"23:06","end":"00:29","startHours":23.10040098891444,"endHours":24.48443018049507,"quality":"neutral"},{"name":"Labha","start":"00:29","end":"01:52","startHours":24.48443018049507,"endHours":25.8684593720757,"quality":"auspicious"},{"name":"Amṛta","start":"01:52","end":"03:15","startHours":25.8684593720757,"endHours":27.252488563656332,"quality":"auspicious"},{"name":"Kāla","start":"03:15","end":"04:38","startHours":27.252488563656332,"endHours":28.636517755236962,"quality":"inauspicious"},{"name":"Śubha","start":"04:38","end":"06:01","startHours":28.636517755236962,"endHours":30.020546946817593,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:01","end":"07:01","startHours":6.020546946817592,"endHours":7.020546946817592,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:01","end":"08:01","startHours":7.020546946817592,"endHours":8.020546946817593,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:01","end":"09:01","startHours":8.020546946817593,"endHours":9.020546946817593,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:01","end":"10:01","startHours":9.020546946817593,"endHours":10.020546946817593,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:01","end":"11:01","startHours":10.020546946817593,"endHours":11.020546946817593,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:01","end":"12:01","startHours":11.020546946817593,"endHours":12.020546946817593,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:01","end":"13:01","startHours":12.020546946817593,"endHours":13.020546946817593,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:01","end":"14:01","startHours":13.020546946817593,"endHours":14.020546946817593,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:01","end":"15:01","startHours":14.020546946817593,"endHours":15.020546946817593,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:01","end":"16:01","startHours":15.020546946817593,"endHours":16.020546946817593,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:01","end":"17:01","startHours":16.020546946817593,"endHours":17.020546946817593,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:01","end":"18:01","startHours":17.020546946817593,"endHours":18.020546946817593,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:01","end":"19:01","startHours":18.020546946817593,"endHours":19.020546946817593,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:01","end":"20:01","startHours":19.020546946817593,"endHours":20.020546946817593,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:01","end":"21:01","startHours":20.020546946817593,"endHours":21.020546946817593,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:01","end":"22:01","startHours":21.020546946817593,"endHours":22.020546946817593,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:01","end":"23:01","startHours":22.020546946817593,"endHours":23.020546946817593,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:01","end":"00:01","startHours":23.020546946817593,"endHours":24.020546946817593,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:01","end":"01:01","startHours":24.020546946817593,"endHours":25.020546946817593,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:01","end":"02:01","startHours":25.020546946817593,"endHours":26.020546946817593,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:01","end":"03:01","startHours":26.020546946817593,"endHours":27.020546946817593,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:01","end":"04:01","startHours":27.020546946817593,"endHours":28.020546946817593,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:01","end":"05:01","startHours":28.020546946817593,"endHours":29.020546946817593,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:01","end":"06:01","startHours":29.020546946817593,"endHours":30.020546946817593,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Svātī","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"unfavorable_nakshatras":["Aśvinī","Punarvasu","Puṣya","Aśleṣā","Maghā","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Mithuna","Siṃha","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Kanyā","Vṛścika","Dhanu","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"West","rahuVasa":"North-East","anandadiYoga":{"name":"Mudgara","quality":"Inauspicious"},"tropicalRitu":"Vasanta (Spring) (tropical)","vedicRitu":"Śiśira (Winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":8.90540614990062,"eotMinutes":-0.7698108297043191,"ayanamsa":26.0221}},"calendars":{"vikram_samvat":2212,"vikram_samvatsara":"Vibhava","saka_samvat":2077,"saka_samvatsara":"Rākṣasa","bengali_samvat":1562,"malayalam_era":1331,"nanakshahi_year":686,"lunar_month":"Caitra","lunar_month_paksha_full":"Caitra Śukla 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 Śukla Ekādaśī · Vikram 2212 Vibhava · Śaka 2077 Rākṣasa"},"festivals":[{"id":"kamada-ekadashi","name":"Kāmadā Ekādaśī","name_sanskrit":"कामदा एकादशी","tradition":"Vaishnava","associated_deity":"Bhagavān Viṣṇu","significance":"Fulfills righteous desires; removes brahma-hatyā.","vrata":true,"detection":{"tithi_number":11,"tithi_paksha":"Śukla","lunar_month":"Caitra"},"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}],"todays_walk":{"walk":{"id":"surya-walk","name":"Sūrya Walk","name_sanskrit":"सूर्य यात्रा","type":"graha","description":"Self-illumination + BG 4.1 (Sun-lineage of Gītā transmission).","step_count":6,"url":"/walk/surya-walk"},"reason":"Ravivāra (Sunday) — 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 April 13, 2155 CE · Phoenix, USA · Vidhyamitra","description":"April 13, 2155 CE for Phoenix, USA: Śukla Ekādaśī, sūryodaya 06:01, sūryāsta 18:57.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/phoenix/2155-04-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/phoenix/2155-04-13","sa":"https://sa.vidhyamitra.com/city/phoenix/2155-04-13","hi":"https://hi.vidhyamitra.com/city/phoenix/2155-04-13","x-default":"https://vidhyamitra.com/city/phoenix/2155-04-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T10:43:29.589Z","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":"2026-06-01T10:43:29.589Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T10:43:29.589Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}