{"id":"vidhyamitra:city-day:phoenix:1871-05-01:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/phoenix/1871-05-01","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1871-05-01","date_display":"May 1, 1871 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":1871,"month":5,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2404548.770833,"kali_year":4973,"ahargana":1816083.2708,"sun":{"sidereal_longitude":18.5132,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":147.2092,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":11,"name":"Ekādaśī","paksha":"Śukla","full_name":"Śukla Ekādaśī","elongation_degrees":128.6961,"elapsed_within_tithi_degrees":8.6961},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1,"moon_longitude":147.2092,"elapsed_within_degrees":0.5426},"yoga":{"number":13,"name":"Vyāghāta","sum_longitude":165.7224},"karana":{"half_tithi_index":21,"name":"Viṣṭi"},"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":1871,"month":5,"day":1,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2404548.770833,"ahargana":1816083.2708,"kali_year":4973,"ayanamsa_lahiri":22.0556,"grahas":{"sun":{"sidereal_longitude":18.160112000000026,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":144.986512,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":false,"latitude":4.2803},"mars":{"sidereal_longitude":148.76701200000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":true},"mercury":{"sidereal_longitude":37.83261199999998,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":64.713212,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":53.83791200000002,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":258.8037119999999,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":75.1687,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":255.1687,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","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":1871,"month":5,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2404548.770833,"kali_year":4973,"ahargana":1816083.2708,"sun":{"sidereal_longitude":18.5132,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":147.2092,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":11,"name":"Ekādaśī","paksha":"Śukla","full_name":"Śukla Ekādaśī","elongation_degrees":128.6961,"elapsed_within_tithi_degrees":8.6961},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1,"moon_longitude":147.2092,"elapsed_within_degrees":0.5426},"yoga":{"number":13,"name":"Vyāghāta","sum_longitude":165.7224},"karana":{"half_tithi_index":21,"name":"Viṣṭi"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.28,"elongation":128.696},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.28,"opposition_distance":51.304}},"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":"05:41","sunsetLocal":"19:10","solarNoonLocal":"12:25","dayLengthHours":13.488055186756535,"dayLengthDisplay":"13 Hours 29 Mins 17 Secs","nightLengthDisplay":"10 Hours 30 Mins 43 Secs","moonriseLocal":"14:36","moonsetLocal":"03:09","rahuKala":{"name":"Rāhu Kāla","start":"07:22","end":"09:03","startHours":7.364945849483518,"endHours":9.050952747828084,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:44","end":"12:25","startHours":10.736959646172652,"endHours":12.42296654451722,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"14:07","end":"15:48","startHours":14.108973442861785,"endHours":15.794980341206353,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:50","end":"09:17","startHours":8.82615182804881,"endHours":9.275753667607361,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:14","end":"06:36","startHours":6.24094125058714,"endHours":6.600622722233981,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:58","end":"12:52","startHours":11.973364704958668,"endHours":12.872568384075771,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:53","end":"04:47","startHours":3.8805315929047466,"endHours":4.779735272021849,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:33","end":"05:41","startHours":4.554934352242573,"endHours":5.678938951138951,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:40","end":"15:34","startHours":14.670975742309974,"endHours":15.570179421427076,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:58","end":"19:22","startHours":18.966994137895487,"endHours":19.366994137895485,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:10","end":"19:44","startHours":19.166994137895486,"endHours":19.728996437343675,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:55","end":"20:40","startHours":18.916994137895486,"endHours":20.666994137895486,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:58","end":"00:52","startHours":23.97336470495867,"endHours":24.87256838407577,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"05:41","end":"07:22","startHours":5.678938951138951,"endHours":7.364945849483518,"quality":"auspicious"},{"name":"Kāla","start":"07:22","end":"09:03","startHours":7.364945849483518,"endHours":9.050952747828084,"quality":"inauspicious"},{"name":"Śubha","start":"09:03","end":"10:44","startHours":9.050952747828084,"endHours":10.736959646172652,"quality":"auspicious"},{"name":"Roga","start":"10:44","end":"12:25","startHours":10.736959646172652,"endHours":12.42296654451722,"quality":"inauspicious"},{"name":"Udveg","start":"12:25","end":"14:07","startHours":12.42296654451722,"endHours":14.108973442861785,"quality":"inauspicious"},{"name":"Chala","start":"14:07","end":"15:48","startHours":14.108973442861785,"endHours":15.794980341206353,"quality":"neutral"},{"name":"Labha","start":"15:48","end":"17:29","startHours":15.794980341206353,"endHours":17.48098723955092,"quality":"auspicious"},{"name":"Amṛta","start":"17:29","end":"19:10","startHours":17.48098723955092,"endHours":19.166994137895486,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"19:10","end":"20:29","startHours":19.166994137895486,"endHours":20.48098723955092,"quality":"neutral"},{"name":"Labha","start":"20:29","end":"21:48","startHours":20.48098723955092,"endHours":21.79498034120635,"quality":"auspicious"},{"name":"Amṛta","start":"21:48","end":"23:07","startHours":21.79498034120635,"endHours":23.108973442861785,"quality":"auspicious"},{"name":"Kāla","start":"23:07","end":"00:25","startHours":23.108973442861785,"endHours":24.42296654451722,"quality":"inauspicious"},{"name":"Śubha","start":"00:25","end":"01:44","startHours":24.42296654451722,"endHours":25.73695964617265,"quality":"auspicious"},{"name":"Roga","start":"01:44","end":"03:03","startHours":25.73695964617265,"endHours":27.050952747828084,"quality":"inauspicious"},{"name":"Udveg","start":"03:03","end":"04:22","startHours":27.050952747828084,"endHours":28.36494584948352,"quality":"inauspicious"},{"name":"Chala","start":"04:22","end":"05:41","startHours":28.36494584948352,"endHours":29.678938951138953,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"05:41","end":"06:41","startHours":5.678938951138951,"endHours":6.678938951138951,"planetary_lord":"Moon"},{"name":"Hora 2","start":"06:41","end":"07:41","startHours":6.678938951138951,"endHours":7.678938951138951,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"07:41","end":"08:41","startHours":7.678938951138951,"endHours":8.678938951138951,"planetary_lord":"Venus"},{"name":"Hora 4","start":"08:41","end":"09:41","startHours":8.678938951138951,"endHours":9.678938951138951,"planetary_lord":"Sun"},{"name":"Hora 5","start":"09:41","end":"10:41","startHours":9.678938951138951,"endHours":10.678938951138951,"planetary_lord":"Mars"},{"name":"Hora 6","start":"10:41","end":"11:41","startHours":10.678938951138951,"endHours":11.678938951138951,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"11:41","end":"12:41","startHours":11.678938951138951,"endHours":12.678938951138951,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"12:41","end":"13:41","startHours":12.678938951138951,"endHours":13.678938951138951,"planetary_lord":"Moon"},{"name":"Hora 9","start":"13:41","end":"14:41","startHours":13.678938951138951,"endHours":14.678938951138951,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"14:41","end":"15:41","startHours":14.678938951138951,"endHours":15.678938951138951,"planetary_lord":"Venus"},{"name":"Hora 11","start":"15:41","end":"16:41","startHours":15.678938951138951,"endHours":16.678938951138953,"planetary_lord":"Sun"},{"name":"Hora 12","start":"16:41","end":"17:41","startHours":16.678938951138953,"endHours":17.678938951138953,"planetary_lord":"Mars"},{"name":"Hora 13","start":"17:41","end":"18:41","startHours":17.678938951138953,"endHours":18.678938951138953,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"18:41","end":"19:41","startHours":18.678938951138953,"endHours":19.678938951138953,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"19:41","end":"20:41","startHours":19.678938951138953,"endHours":20.678938951138953,"planetary_lord":"Moon"},{"name":"Hora 16","start":"20:41","end":"21:41","startHours":20.678938951138953,"endHours":21.678938951138953,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"21:41","end":"22:41","startHours":21.678938951138953,"endHours":22.678938951138953,"planetary_lord":"Venus"},{"name":"Hora 18","start":"22:41","end":"23:41","startHours":22.678938951138953,"endHours":23.678938951138953,"planetary_lord":"Sun"},{"name":"Hora 19","start":"23:41","end":"00:41","startHours":23.678938951138953,"endHours":24.678938951138953,"planetary_lord":"Mars"},{"name":"Hora 20","start":"00:41","end":"01:41","startHours":24.678938951138953,"endHours":25.678938951138953,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"01:41","end":"02:41","startHours":25.678938951138953,"endHours":26.678938951138953,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"02:41","end":"03:41","startHours":26.678938951138953,"endHours":27.678938951138953,"planetary_lord":"Moon"},{"name":"Hora 23","start":"03:41","end":"04:41","startHours":27.678938951138953,"endHours":28.678938951138953,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"04:41","end":"05:41","startHours":28.678938951138953,"endHours":29.678938951138953,"planetary_lord":"Venus"}],"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":["Vṛṣabha","Mithuna","Siṃha","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Kanyā","Vṛścika","Dhanu","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"West","rahuVasa":"North-East","anandadiYoga":{"name":"Utpāta","quality":"Inauspicious"},"tropicalRitu":"Vasanta (Spring) (tropical)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":14.880434114794884,"eotMinutes":2.918007328966811,"ayanamsa":22.0556}},"calendars":{"vikram_samvat":1928,"vikram_samvatsara":"Tāraṇa","saka_samvat":1793,"saka_samvatsara":"Prajāpati","bengali_samvat":1278,"malayalam_era":1047,"nanakshahi_year":402,"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 1928 Tāraṇa · Śaka 1793 Prajāpati"},"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":"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 May 1, 1871 CE · Phoenix, USA · Vidhyamitra","description":"May 1, 1871 CE for Phoenix, USA: Śukla Ekādaśī, sūryodaya 05:41, sūryāsta 19:10.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/phoenix/1871-05-01","hreflang_alternates":{"en":"https://vidhyamitra.com/city/phoenix/1871-05-01","sa":"https://sa.vidhyamitra.com/city/phoenix/1871-05-01","hi":"https://hi.vidhyamitra.com/city/phoenix/1871-05-01","x-default":"https://vidhyamitra.com/city/phoenix/1871-05-01"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T08:06:04.541Z","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":"2026-06-01T08:06:04.541Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T08:06:04.541Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}