{"id":"vidhyamitra:city-day:phoenix:2155-05-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/phoenix/2155-05-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2155-05-13","date_display":"May 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":5,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2508289.770833,"kali_year":5257,"ahargana":1919824.2708,"sun":{"sidereal_longitude":25.7461,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":154.8037,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":11,"name":"Ekādaśī","paksha":"Śukla","full_name":"Śukla Ekādaśī","elongation_degrees":129.0576,"elapsed_within_tithi_degrees":9.0576},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3,"moon_longitude":154.8037,"elapsed_within_degrees":8.1371},"yoga":{"number":14,"name":"Harṣaṇa","sum_longitude":180.5498},"karana":{"half_tithi_index":21,"name":"Viṣṭi"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"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":5,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2508289.770833,"ahargana":1919824.2708,"kali_year":5257,"ayanamsa_lahiri":26.0233,"grahas":{"sun":{"sidereal_longitude":26.101443000000017,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":4},"retrograde":false},"moon":{"sidereal_longitude":154.16514299999994,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3},"retrograde":false,"latitude":0.2876},"mars":{"sidereal_longitude":144.780143,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":true},"mercury":{"sidereal_longitude":0.6132430000000113,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":43.64194299999997,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":2},"retrograde":false},"venus":{"sidereal_longitude":8.823942999999986,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":123.155843,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":338.4713,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":158.4713,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","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":2155,"month":5,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2508289.770833,"kali_year":5257,"ahargana":1919824.2708,"sun":{"sidereal_longitude":25.7461,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":154.8037,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":11,"name":"Ekādaśī","paksha":"Śukla","full_name":"Śukla Ekādaśī","elongation_degrees":129.0576,"elapsed_within_tithi_degrees":9.0576},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3,"moon_longitude":154.8037,"elapsed_within_degrees":8.1371},"yoga":{"number":14,"name":"Harṣaṇa","sum_longitude":180.5498},"karana":{"half_tithi_index":21,"name":"Viṣṭi"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":0.288,"elongation":129.058},"lunar":{"type":"lunar","occurs":false,"moon_latitude":0.288,"opposition_distance":50.942}},"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":"05:30","sunsetLocal":"19:19","solarNoonLocal":"12:25","dayLengthHours":13.826275346333256,"dayLengthDisplay":"13 Hours 49 Mins 35 Secs","nightLengthDisplay":"10 Hours 10 Mins 25 Secs","moonriseLocal":"14:54","moonsetLocal":"02:59","rahuKala":{"name":"Rāhu Kāla","start":"15:52","end":"17:36","startHours":15.865611524190706,"endHours":17.593895942482362,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"08:57","end":"10:41","startHours":8.952473851024077,"endHours":10.680758269315735,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:25","end":"14:08","startHours":12.409042687607393,"endHours":14.137327105899049,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:43","end":"09:11","startHours":8.72203592858519,"endHours":9.182911773462965,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:04","end":"06:26","startHours":6.071999820537982,"endHours":6.440700496440202,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:57","end":"12:52","startHours":11.948166842729618,"endHours":12.869918532485167,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:39","end":"04:34","startHours":3.652401634929663,"endHours":4.574153324685213,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:21","end":"05:30","startHours":4.343715402246326,"endHours":5.495905014440764,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:43","end":"15:38","startHours":14.713421911996269,"endHours":15.63517360175182,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:07","end":"19:31","startHours":19.12218036077402,"endHours":19.52218036077402,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:19","end":"19:54","startHours":19.32218036077402,"endHours":19.89827516687124,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:04","end":"20:49","startHours":19.07218036077402,"endHours":20.82218036077402,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:57","end":"00:52","startHours":23.948166842729616,"endHours":24.86991853248517,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"05:30","end":"07:13","startHours":5.495905014440764,"endHours":7.2241894327324205,"quality":"inauspicious"},{"name":"Udveg","start":"07:13","end":"08:57","startHours":7.2241894327324205,"endHours":8.952473851024077,"quality":"inauspicious"},{"name":"Chala","start":"08:57","end":"10:41","startHours":8.952473851024077,"endHours":10.680758269315735,"quality":"neutral"},{"name":"Labha","start":"10:41","end":"12:25","startHours":10.680758269315735,"endHours":12.409042687607393,"quality":"auspicious"},{"name":"Amṛta","start":"12:25","end":"14:08","startHours":12.409042687607393,"endHours":14.137327105899049,"quality":"auspicious"},{"name":"Kāla","start":"14:08","end":"15:52","startHours":14.137327105899049,"endHours":15.865611524190706,"quality":"inauspicious"},{"name":"Śubha","start":"15:52","end":"17:36","startHours":15.865611524190706,"endHours":17.593895942482362,"quality":"auspicious"},{"name":"Roga","start":"17:36","end":"19:19","startHours":17.593895942482362,"endHours":19.32218036077402,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"19:19","end":"20:36","startHours":19.32218036077402,"endHours":20.593895942482362,"quality":"inauspicious"},{"name":"Śubha","start":"20:36","end":"21:52","startHours":20.593895942482362,"endHours":21.865611524190705,"quality":"auspicious"},{"name":"Roga","start":"21:52","end":"23:08","startHours":21.865611524190705,"endHours":23.137327105899047,"quality":"inauspicious"},{"name":"Udveg","start":"23:08","end":"00:25","startHours":23.137327105899047,"endHours":24.409042687607393,"quality":"inauspicious"},{"name":"Chala","start":"00:25","end":"01:41","startHours":24.409042687607393,"endHours":25.680758269315735,"quality":"neutral"},{"name":"Labha","start":"01:41","end":"02:57","startHours":25.680758269315735,"endHours":26.952473851024077,"quality":"auspicious"},{"name":"Amṛta","start":"02:57","end":"04:13","startHours":26.952473851024077,"endHours":28.224189432732423,"quality":"auspicious"},{"name":"Kāla","start":"04:13","end":"05:30","startHours":28.224189432732423,"endHours":29.495905014440766,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:30","end":"06:30","startHours":5.495905014440764,"endHours":6.495905014440764,"planetary_lord":"Mars"},{"name":"Hora 2","start":"06:30","end":"07:30","startHours":6.495905014440764,"endHours":7.495905014440764,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"07:30","end":"08:30","startHours":7.495905014440764,"endHours":8.495905014440764,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"08:30","end":"09:30","startHours":8.495905014440764,"endHours":9.495905014440764,"planetary_lord":"Moon"},{"name":"Hora 5","start":"09:30","end":"10:30","startHours":9.495905014440764,"endHours":10.495905014440764,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"10:30","end":"11:30","startHours":10.495905014440764,"endHours":11.495905014440764,"planetary_lord":"Venus"},{"name":"Hora 7","start":"11:30","end":"12:30","startHours":11.495905014440764,"endHours":12.495905014440764,"planetary_lord":"Sun"},{"name":"Hora 8","start":"12:30","end":"13:30","startHours":12.495905014440764,"endHours":13.495905014440764,"planetary_lord":"Mars"},{"name":"Hora 9","start":"13:30","end":"14:30","startHours":13.495905014440764,"endHours":14.495905014440764,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"14:30","end":"15:30","startHours":14.495905014440764,"endHours":15.495905014440764,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"15:30","end":"16:30","startHours":15.495905014440764,"endHours":16.495905014440766,"planetary_lord":"Moon"},{"name":"Hora 12","start":"16:30","end":"17:30","startHours":16.495905014440766,"endHours":17.495905014440766,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"17:30","end":"18:30","startHours":17.495905014440766,"endHours":18.495905014440766,"planetary_lord":"Venus"},{"name":"Hora 14","start":"18:30","end":"19:30","startHours":18.495905014440766,"endHours":19.495905014440766,"planetary_lord":"Sun"},{"name":"Hora 15","start":"19:30","end":"20:30","startHours":19.495905014440766,"endHours":20.495905014440766,"planetary_lord":"Mars"},{"name":"Hora 16","start":"20:30","end":"21:30","startHours":20.495905014440766,"endHours":21.495905014440766,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"21:30","end":"22:30","startHours":21.495905014440766,"endHours":22.495905014440766,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"22:30","end":"23:30","startHours":22.495905014440766,"endHours":23.495905014440766,"planetary_lord":"Moon"},{"name":"Hora 19","start":"23:30","end":"00:30","startHours":23.495905014440766,"endHours":24.495905014440766,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"00:30","end":"01:30","startHours":24.495905014440766,"endHours":25.495905014440766,"planetary_lord":"Venus"},{"name":"Hora 21","start":"01:30","end":"02:30","startHours":25.495905014440766,"endHours":26.495905014440766,"planetary_lord":"Sun"},{"name":"Hora 22","start":"02:30","end":"03:30","startHours":26.495905014440766,"endHours":27.495905014440766,"planetary_lord":"Mars"},{"name":"Hora 23","start":"03:30","end":"04:30","startHours":27.495905014440766,"endHours":28.495905014440766,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"04:30","end":"05:30","startHours":28.495905014440766,"endHours":29.495905014440766,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Hasta","Citrā","Svātī","Viśākhā","Anurādhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Mithuna","Karka","Kanyā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Tulā","Dhanu","Makara"]},"dishaShool":"North (Uttara)","chandraVasa":"North-West","rahuVasa":"North","anandadiYoga":{"name":"Śubha","quality":"Auspicious"},"tropicalRitu":"Vasanta (Spring) (tropical)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":18.297427946385323,"eotMinutes":3.7534387435564067,"ayanamsa":26.0233}},"calendars":{"vikram_samvat":2212,"vikram_samvatsara":"Vibhava","saka_samvat":2077,"saka_samvatsara":"Rākṣasa","bengali_samvat":1562,"malayalam_era":1331,"nanakshahi_year":686,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Vaiśākha","lunar_month_amanta":"Vaiśākha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Vasanta (Spring)","display_summary":"Vaiśākha Śukla Ekādaśī · Vikram 2212 Vibhava · Śaka 2077 Rākṣasa"},"festivals":[{"id":"mohini-ekadashi","name":"Mohinī Ekādaśī","name_sanskrit":"मोहिनी एकादशी","tradition":"Vaishnava","associated_deity":"Bhagavān Viṣṇu (Mohinī form)","significance":"Mohinī-form of Viṣṇu deceived asuras during samudra-mathana for amṛta.","vrata":true,"detection":{"tithi_number":11,"tithi_paksha":"Śukla","lunar_month":"Vaiśākha"},"precedence":3,"sources":["Bhāgavata 8.9"]},{"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":"mangala-walk","name":"Maṅgala Walk","name_sanskrit":"मङ्गल यात्रा","type":"graha","description":"Right action + BG 2.31-38 (kṣatriya-dharma).","step_count":7,"url":"/walk/mangala-walk"},"reason":"Maṅgalavāra (Tuesday) — 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 May 13, 2155 CE · Phoenix, USA · Vidhyamitra","description":"May 13, 2155 CE for Phoenix, USA: Śukla Ekādaśī, sūryodaya 05:30, sūryāsta 19:19.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/phoenix/2155-05-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/phoenix/2155-05-13","sa":"https://sa.vidhyamitra.com/city/phoenix/2155-05-13","hi":"https://hi.vidhyamitra.com/city/phoenix/2155-05-13","x-default":"https://vidhyamitra.com/city/phoenix/2155-05-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T12:42:41.606Z","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":"2026-05-31T12:42:41.606Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T12:42:41.606Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}