{"id":"vidhyamitra:city-day:phoenix:2163-05-01:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/phoenix/2163-05-01","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2163-05-01","date_display":"May 1, 2163 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":2163,"month":5,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2511199.770833,"kali_year":5265,"ahargana":1922734.2708,"sun":{"sidereal_longitude":14.111,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":348.2744,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":334.1634,"elapsed_within_tithi_degrees":10.1634},"nakshatra":{"number":27,"name":"Revatī","pada":1,"moon_longitude":348.2744,"elapsed_within_degrees":1.6077},"yoga":{"number":1,"name":"Viṣkambha","sum_longitude":2.3854},"karana":{"half_tithi_index":55,"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":2163,"month":5,"day":1,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2511199.770833,"ahargana":1922734.2708,"kali_year":5265,"ayanamsa_lahiri":26.1346,"grahas":{"sun":{"sidereal_longitude":14.419460000000015,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1},"retrograde":false},"moon":{"sidereal_longitude":348.76746,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":1},"retrograde":false,"latitude":1.24},"mars":{"sidereal_longitude":303.80326,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":345.53606,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":291.69286,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"venus":{"sidereal_longitude":354.53356,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":226.65746000000001,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":true},"rahu":{"sidereal_longitude":184.2855,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":4.2855,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"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":2163,"month":5,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2511199.770833,"kali_year":5265,"ahargana":1922734.2708,"sun":{"sidereal_longitude":14.111,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":348.2744,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":334.1634,"elapsed_within_tithi_degrees":10.1634},"nakshatra":{"number":27,"name":"Revatī","pada":1,"moon_longitude":348.2744,"elapsed_within_degrees":1.6077},"yoga":{"number":1,"name":"Viṣkambha","sum_longitude":2.3854},"karana":{"half_tithi_index":55,"name":"Vaṇija"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":1.24,"elongation":25.837},"lunar":{"type":"lunar","occurs":false,"moon_latitude":1.24,"opposition_distance":154.163}},"eclipse_window_40days":[{"offset_days":-12,"type":"lunar","occurs":true,"moon_latitude":-0.292,"opposition_distance":1.266},{"offset_days":2,"type":"solar","occurs":true,"moon_latitude":-0.773,"elongation":1.964}]},"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":"05:40","sunsetLocal":"19:10","solarNoonLocal":"12:25","dayLengthHours":13.498327552492208,"dayLengthDisplay":"13 Hours 29 Mins 54 Secs","nightLengthDisplay":"10 Hours 30 Mins 06 Secs","moonriseLocal":"04:24","moonsetLocal":"17:01","rahuKala":{"name":"Rāhu Kāla","start":"17:29","end":"19:10","startHours":17.484839376701796,"endHours":19.172130320763323,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:25","end":"14:07","startHours":12.42296654451722,"endHours":14.110257488578744,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:48","end":"17:29","startHours":15.797548432640271,"endHours":17.484839376701796,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:49","end":"09:16","startHours":8.823412530519295,"endHours":9.273356782269037,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:14","end":"06:36","startHours":6.2362330829582895,"endHours":6.596188484358081,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:58","end":"12:52","startHours":11.97302229276748,"endHours":12.872910796266959,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:52","end":"04:46","startHours":3.8740257612721534,"endHours":4.7739142647716335,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:33","end":"05:40","startHours":4.548942138896764,"endHours":5.6738027682711145,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:40","end":"15:34","startHours":14.672687803265921,"endHours":15.572576306765402,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:58","end":"19:22","startHours":18.972130320763323,"endHours":19.372130320763322,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:10","end":"19:44","startHours":19.172130320763323,"endHours":19.7345606354505,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:55","end":"20:40","startHours":18.922130320763323,"endHours":20.672130320763323,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:58","end":"00:52","startHours":23.973022292767478,"endHours":24.87291079626696,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"05:40","end":"07:22","startHours":5.6738027682711145,"endHours":7.36109371233264,"quality":"inauspicious"},{"name":"Chala","start":"07:22","end":"09:03","startHours":7.36109371233264,"endHours":9.048384656394166,"quality":"neutral"},{"name":"Labha","start":"09:03","end":"10:44","startHours":9.048384656394166,"endHours":10.735675600455693,"quality":"auspicious"},{"name":"Amṛta","start":"10:44","end":"12:25","startHours":10.735675600455693,"endHours":12.42296654451722,"quality":"auspicious"},{"name":"Kāla","start":"12:25","end":"14:07","startHours":12.42296654451722,"endHours":14.110257488578744,"quality":"inauspicious"},{"name":"Śubha","start":"14:07","end":"15:48","startHours":14.110257488578744,"endHours":15.797548432640271,"quality":"auspicious"},{"name":"Roga","start":"15:48","end":"17:29","startHours":15.797548432640271,"endHours":17.484839376701796,"quality":"inauspicious"},{"name":"Udveg","start":"17:29","end":"19:10","startHours":17.484839376701796,"endHours":19.172130320763323,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"19:10","end":"20:29","startHours":19.172130320763323,"endHours":20.484839376701796,"quality":"auspicious"},{"name":"Roga","start":"20:29","end":"21:48","startHours":20.484839376701796,"endHours":21.79754843264027,"quality":"inauspicious"},{"name":"Udveg","start":"21:48","end":"23:07","startHours":21.79754843264027,"endHours":23.110257488578746,"quality":"inauspicious"},{"name":"Chala","start":"23:07","end":"00:25","startHours":23.110257488578746,"endHours":24.42296654451722,"quality":"neutral"},{"name":"Labha","start":"00:25","end":"01:44","startHours":24.42296654451722,"endHours":25.735675600455693,"quality":"auspicious"},{"name":"Amṛta","start":"01:44","end":"03:03","startHours":25.735675600455693,"endHours":27.048384656394166,"quality":"auspicious"},{"name":"Kāla","start":"03:03","end":"04:22","startHours":27.048384656394166,"endHours":28.36109371233264,"quality":"inauspicious"},{"name":"Śubha","start":"04:22","end":"05:40","startHours":28.36109371233264,"endHours":29.673802768271116,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:40","end":"06:40","startHours":5.6738027682711145,"endHours":6.6738027682711145,"planetary_lord":"Sun"},{"name":"Hora 2","start":"06:40","end":"07:40","startHours":6.6738027682711145,"endHours":7.6738027682711145,"planetary_lord":"Mars"},{"name":"Hora 3","start":"07:40","end":"08:40","startHours":7.6738027682711145,"endHours":8.673802768271115,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"08:40","end":"09:40","startHours":8.673802768271115,"endHours":9.673802768271115,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"09:40","end":"10:40","startHours":9.673802768271115,"endHours":10.673802768271115,"planetary_lord":"Moon"},{"name":"Hora 6","start":"10:40","end":"11:40","startHours":10.673802768271115,"endHours":11.673802768271115,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"11:40","end":"12:40","startHours":11.673802768271115,"endHours":12.673802768271115,"planetary_lord":"Venus"},{"name":"Hora 8","start":"12:40","end":"13:40","startHours":12.673802768271115,"endHours":13.673802768271115,"planetary_lord":"Sun"},{"name":"Hora 9","start":"13:40","end":"14:40","startHours":13.673802768271115,"endHours":14.673802768271115,"planetary_lord":"Mars"},{"name":"Hora 10","start":"14:40","end":"15:40","startHours":14.673802768271115,"endHours":15.673802768271115,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"15:40","end":"16:40","startHours":15.673802768271115,"endHours":16.673802768271116,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"16:40","end":"17:40","startHours":16.673802768271116,"endHours":17.673802768271116,"planetary_lord":"Moon"},{"name":"Hora 13","start":"17:40","end":"18:40","startHours":17.673802768271116,"endHours":18.673802768271116,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"18:40","end":"19:40","startHours":18.673802768271116,"endHours":19.673802768271116,"planetary_lord":"Venus"},{"name":"Hora 15","start":"19:40","end":"20:40","startHours":19.673802768271116,"endHours":20.673802768271116,"planetary_lord":"Sun"},{"name":"Hora 16","start":"20:40","end":"21:40","startHours":20.673802768271116,"endHours":21.673802768271116,"planetary_lord":"Mars"},{"name":"Hora 17","start":"21:40","end":"22:40","startHours":21.673802768271116,"endHours":22.673802768271116,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"22:40","end":"23:40","startHours":22.673802768271116,"endHours":23.673802768271116,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"23:40","end":"00:40","startHours":23.673802768271116,"endHours":24.673802768271116,"planetary_lord":"Moon"},{"name":"Hora 20","start":"00:40","end":"01:40","startHours":24.673802768271116,"endHours":25.673802768271116,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"01:40","end":"02:40","startHours":25.673802768271116,"endHours":26.673802768271116,"planetary_lord":"Venus"},{"name":"Hora 22","start":"02:40","end":"03:40","startHours":26.673802768271116,"endHours":27.673802768271116,"planetary_lord":"Sun"},{"name":"Hora 23","start":"03:40","end":"04:40","startHours":27.673802768271116,"endHours":28.673802768271116,"planetary_lord":"Mars"},{"name":"Hora 24","start":"04:40","end":"05:40","startHours":28.673802768271116,"endHours":29.673802768271116,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"unfavorable_nakshatras":["Ārdrā","Punarvasu","Puṣya","Aśleṣā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Siṃha","Kanyā","Dhanu","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Karka","Tulā","Vṛścika","Kumbha"]},"dishaShool":"West (Paścim)","chandraVasa":"South-West","rahuVasa":"North-East","anandadiYoga":{"name":"Sushira","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":14.98652174266925,"eotMinutes":2.918007328966811,"ayanamsa":26.1346}},"calendars":{"vikram_samvat":2220,"vikram_samvatsara":"Dhātṛ","saka_samvat":2085,"saka_samvatsara":"Rudhirodgāri","bengali_samvat":1570,"malayalam_era":1339,"nanakshahi_year":694,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Vaiśākha","lunar_month_amanta":"Caitra","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 Kṛṣṇa Trayodaśī · Vikram 2220 Dhātṛ · Śaka 2085 Rudhirodgāri"},"festivals":[{"id":"pradosha-vrata","name":"Pradoṣa Vrata","name_sanskrit":"प्रदोष व्रत","tradition":"Shaiva","associated_deity":"Śiva","significance":"Twilight worship of Śiva on Trayodaśī.","vrata":true,"detection":{"any_of":[{"tithi_number":13},{"tithi_number":28}]},"precedence":7}],"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 May 1, 2163 CE · Phoenix, USA · Vidhyamitra","description":"May 1, 2163 CE for Phoenix, USA: Kṛṣṇa Trayodaśī, sūryodaya 05:40, sūryāsta 19:10.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/phoenix/2163-05-01","hreflang_alternates":{"en":"https://vidhyamitra.com/city/phoenix/2163-05-01","sa":"https://sa.vidhyamitra.com/city/phoenix/2163-05-01","hi":"https://hi.vidhyamitra.com/city/phoenix/2163-05-01","x-default":"https://vidhyamitra.com/city/phoenix/2163-05-01"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T09:42:00.607Z","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":"2026-05-31T09:42:00.607Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T09:42:00.607Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}