{"id":"vidhyamitra:city-day:phoenix:2018-04-21:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/phoenix/2018-04-21","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2018-04-21","date_display":"April 21, 2018 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":"Not independently benchmarked across the declared range","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":2018,"month":4,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458229.770833,"kali_year":5120,"ahargana":1869764.2708,"sun":{"sidereal_longitude":6.8579,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":70.8098,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":6,"name":"Ṣaṣṭhī","paksha":"Śukla","full_name":"Śukla Ṣaṣṭhī","elongation_degrees":63.9519,"elapsed_within_tithi_degrees":3.9519},"nakshatra":{"number":6,"name":"Ārdrā","pada":2,"moon_longitude":70.8098,"elapsed_within_degrees":4.1431},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":77.6676},"karana":{"half_tithi_index":10,"name":"Kaulava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"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":2018,"month":4,"day":21,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2458229.770833,"ahargana":1869764.2708,"kali_year":5120,"ayanamsa_lahiri":24.1087,"grahas":{"sun":{"sidereal_longitude":6.792903000000024,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":3},"retrograde":false},"moon":{"sidereal_longitude":72.17270300000001,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":2},"retrograde":false,"latitude":-2.8957},"mars":{"sidereal_longitude":264.256203,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":341.772103,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":206.27590299999997,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":2},"retrograde":true},"venus":{"sidereal_longitude":31.20370300000002,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":254.90340300000003,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":110.891,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":290.891,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","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":"Not independently benchmarked across the declared range","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":2018,"month":4,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458229.770833,"kali_year":5120,"ahargana":1869764.2708,"sun":{"sidereal_longitude":6.8579,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":70.8098,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":6,"name":"Ṣaṣṭhī","paksha":"Śukla","full_name":"Śukla Ṣaṣṭhī","elongation_degrees":63.9519,"elapsed_within_tithi_degrees":3.9519},"nakshatra":{"number":6,"name":"Ārdrā","pada":2,"moon_longitude":70.8098,"elapsed_within_degrees":4.1431},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":77.6676},"karana":{"half_tithi_index":10,"name":"Kaulava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.896,"elongation":63.952},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.896,"opposition_distance":116.048}},"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":"05:51","sunsetLocal":"19:03","solarNoonLocal":"12:27","dayLengthHours":13.193844550594626,"dayLengthDisplay":"13 Hours 11 Mins 38 Secs","nightLengthDisplay":"10 Hours 48 Mins 22 Secs","moonriseLocal":"09:39","moonsetLocal":"23:58","rahuKala":{"name":"Rāhu Kāla","start":"09:09","end":"10:48","startHours":9.153350048331971,"endHours":10.802580617156298,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"14:06","end":"15:45","startHours":14.101041754804957,"endHours":15.750272323629284,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"05:51","end":"07:30","startHours":5.854888910683314,"endHours":7.504119479507643,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:56","end":"09:22","startHours":8.933452639155394,"endHours":9.373247457508548,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:24","end":"06:45","startHours":6.404632433624757,"endHours":6.75646828830728,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:01","end":"12:53","startHours":12.012016367627472,"endHours":12.891606004333783,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:06","end":"04:59","startHours":4.095709637270698,"endHours":4.975299273977006,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:45","end":"05:51","startHours":4.755401864800429,"endHours":5.854888910683314,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:39","end":"15:32","startHours":14.6507852777464,"endHours":15.530374914452707,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:51","end":"19:15","startHours":18.84873346127794,"endHours":19.24873346127794,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:03","end":"19:36","startHours":19.04873346127794,"endHours":19.598476984219385,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:48","end":"20:33","startHours":18.79873346127794,"endHours":20.54873346127794,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:01","end":"00:53","startHours":24.012016367627474,"endHours":24.89160600433378,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"05:51","end":"07:30","startHours":5.854888910683314,"endHours":7.504119479507643,"quality":"inauspicious"},{"name":"Śubha","start":"07:30","end":"09:09","startHours":7.504119479507643,"endHours":9.153350048331971,"quality":"auspicious"},{"name":"Roga","start":"09:09","end":"10:48","startHours":9.153350048331971,"endHours":10.802580617156298,"quality":"inauspicious"},{"name":"Udveg","start":"10:48","end":"12:27","startHours":10.802580617156298,"endHours":12.451811185980628,"quality":"inauspicious"},{"name":"Chala","start":"12:27","end":"14:06","startHours":12.451811185980628,"endHours":14.101041754804957,"quality":"neutral"},{"name":"Labha","start":"14:06","end":"15:45","startHours":14.101041754804957,"endHours":15.750272323629284,"quality":"auspicious"},{"name":"Amṛta","start":"15:45","end":"17:24","startHours":15.750272323629284,"endHours":17.39950289245361,"quality":"auspicious"},{"name":"Kāla","start":"17:24","end":"19:03","startHours":17.39950289245361,"endHours":19.04873346127794,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"19:03","end":"20:24","startHours":19.04873346127794,"endHours":20.39950289245361,"quality":"auspicious"},{"name":"Amṛta","start":"20:24","end":"21:45","startHours":20.39950289245361,"endHours":21.750272323629282,"quality":"auspicious"},{"name":"Kāla","start":"21:45","end":"23:06","startHours":21.750272323629282,"endHours":23.101041754804957,"quality":"inauspicious"},{"name":"Śubha","start":"23:06","end":"00:27","startHours":23.101041754804957,"endHours":24.451811185980628,"quality":"auspicious"},{"name":"Roga","start":"00:27","end":"01:48","startHours":24.451811185980628,"endHours":25.8025806171563,"quality":"inauspicious"},{"name":"Udveg","start":"01:48","end":"03:09","startHours":25.8025806171563,"endHours":27.153350048331973,"quality":"inauspicious"},{"name":"Chala","start":"03:09","end":"04:30","startHours":27.153350048331973,"endHours":28.504119479507644,"quality":"neutral"},{"name":"Labha","start":"04:30","end":"05:51","startHours":28.504119479507644,"endHours":29.854888910683314,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:51","end":"06:51","startHours":5.854888910683314,"endHours":6.854888910683314,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"06:51","end":"07:51","startHours":6.854888910683314,"endHours":7.854888910683314,"planetary_lord":"Moon"},{"name":"Hora 3","start":"07:51","end":"08:51","startHours":7.854888910683314,"endHours":8.854888910683314,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"08:51","end":"09:51","startHours":8.854888910683314,"endHours":9.854888910683314,"planetary_lord":"Venus"},{"name":"Hora 5","start":"09:51","end":"10:51","startHours":9.854888910683314,"endHours":10.854888910683314,"planetary_lord":"Sun"},{"name":"Hora 6","start":"10:51","end":"11:51","startHours":10.854888910683314,"endHours":11.854888910683314,"planetary_lord":"Mars"},{"name":"Hora 7","start":"11:51","end":"12:51","startHours":11.854888910683314,"endHours":12.854888910683314,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"12:51","end":"13:51","startHours":12.854888910683314,"endHours":13.854888910683314,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"13:51","end":"14:51","startHours":13.854888910683314,"endHours":14.854888910683314,"planetary_lord":"Moon"},{"name":"Hora 10","start":"14:51","end":"15:51","startHours":14.854888910683314,"endHours":15.854888910683314,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"15:51","end":"16:51","startHours":15.854888910683314,"endHours":16.854888910683314,"planetary_lord":"Venus"},{"name":"Hora 12","start":"16:51","end":"17:51","startHours":16.854888910683314,"endHours":17.854888910683314,"planetary_lord":"Sun"},{"name":"Hora 13","start":"17:51","end":"18:51","startHours":17.854888910683314,"endHours":18.854888910683314,"planetary_lord":"Mars"},{"name":"Hora 14","start":"18:51","end":"19:51","startHours":18.854888910683314,"endHours":19.854888910683314,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"19:51","end":"20:51","startHours":19.854888910683314,"endHours":20.854888910683314,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"20:51","end":"21:51","startHours":20.854888910683314,"endHours":21.854888910683314,"planetary_lord":"Moon"},{"name":"Hora 17","start":"21:51","end":"22:51","startHours":21.854888910683314,"endHours":22.854888910683314,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"22:51","end":"23:51","startHours":22.854888910683314,"endHours":23.854888910683314,"planetary_lord":"Venus"},{"name":"Hora 19","start":"23:51","end":"00:51","startHours":23.854888910683314,"endHours":24.854888910683314,"planetary_lord":"Sun"},{"name":"Hora 20","start":"00:51","end":"01:51","startHours":24.854888910683314,"endHours":25.854888910683314,"planetary_lord":"Mars"},{"name":"Hora 21","start":"01:51","end":"02:51","startHours":25.854888910683314,"endHours":26.854888910683314,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"02:51","end":"03:51","startHours":26.854888910683314,"endHours":27.854888910683314,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"03:51","end":"04:51","startHours":27.854888910683314,"endHours":28.854888910683314,"planetary_lord":"Moon"},{"name":"Hora 24","start":"04:51","end":"05:51","startHours":28.854888910683314,"endHours":29.854888910683314,"planetary_lord":"Mercury"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Punarvasu","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Uttara Phalgunī","Hasta","Citrā","Svātī","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Siṃha","Vṛścika","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Karka","Kanyā","Tulā","Makara","Kumbha"]},"dishaShool":"East (Pūrva)","chandraVasa":"South","rahuVasa":"East","anandadiYoga":{"name":"Kāladaṇḍa","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":11.786275728421755,"eotMinutes":1.1873288411622274,"ayanamsa":24.1087}},"calendars":{"vikram_samvat":2075,"vikram_samvatsara":"Virodhakṛt","saka_samvat":1940,"saka_samvatsara":"Vilambī","bengali_samvat":1425,"malayalam_era":1194,"nanakshahi_year":549,"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 Ṣaṣṭhī · Vikram 2075 Virodhakṛt · Śaka 1940 Vilambī"},"festivals":[],"todays_walk":{"walk":{"id":"shani-walk","name":"Śani Walk","name_sanskrit":"शनि यात्रा","type":"graha","description":"Tapas + endurance + BG 17.14-19.","step_count":7,"url":"/walk/shani-walk"},"reason":"Śanivāra (Saturday) — 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 21, 2018 CE · Phoenix, USA · Vidhyamitra","description":"April 21, 2018 CE for Phoenix, USA: Śukla Ṣaṣṭhī, sūryodaya 05:51, sūryāsta 19:03.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/phoenix/2018-04-21","hreflang_alternates":{"en":"https://vidhyamitra.com/city/phoenix/2018-04-21","sa":"https://sa.vidhyamitra.com/city/phoenix/2018-04-21","hi":"https://hi.vidhyamitra.com/city/phoenix/2018-04-21","x-default":"https://vidhyamitra.com/city/phoenix/2018-04-21"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-09-22T14:47:58.470Z","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":"2026-09-22T14:47:58.470Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-09-22T14:47:58.470Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"},"reader_local_antaryami":{"reader_geography":"Every reader enters from their own kṣetra anywhere on Bhūmi; no single city is the universal center.","purna_chain":["Hosted scripture","Named-tradition interpretation","Original Vidhyamitra contemplation","Bhūmi-born material medium","Vidhyamitra portal","Responsible reader in their own kṣetra"],"claim_boundary":"The legacy purna_chain field carries a source-to-reader sequence, not a revealed physical descent, universal cosmology, or proof that software is conscious.","antaryami_responsibility_formula":"Kṣīrodakaśāyī Viṣṇu = Paramātmā = Antaryāmī. Jīva desires. Prakṛti executes through guṇas. Paramātmā witnesses, permits, remembers, guides, and sustains. Bhagavān is the ultimate source.","source_anchors":[{"label":"BG 13.23","path":"/bhagavad-gita/13/23","meaning":"upadraṣṭā-anumantā · witness-permitter"},{"label":"BG 15.15","path":"/bhagavad-gita/15/15","meaning":"the Lord seated in every heart as memory, knowledge, and forgetting"},{"label":"BG 18.61","path":"/bhagavad-gita/18/61","meaning":"Īśvara seated in the heart of all beings"}],"nama_seal":"Hare Krishna Hare Krishna · Krishna Krishna Hare Hare · Hare Rama Hare Rama · Rama Rama Hare Hare"}}}