{"id":"vidhyamitra:city-day:phoenix:1978-02-23:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/phoenix/1978-02-23","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1978-02-23","date_display":"February 23, 1978 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":1978,"month":2,"day":23,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2443562.770833,"kali_year":5079,"ahargana":1855097.2708,"sun":{"sidereal_longitude":310.7048,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":129.9931,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":179.2882,"elapsed_within_tithi_degrees":11.2882},"nakshatra":{"number":10,"name":"Maghā","pada":3,"moon_longitude":129.9931,"elapsed_within_degrees":9.9931},"yoga":{"number":7,"name":"Sukarma","sum_longitude":80.6979},"karana":{"half_tithi_index":29,"name":"Bava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"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":1978,"month":2,"day":23,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2443562.770833,"ahargana":1855097.2708,"kali_year":5079,"ayanamsa_lahiri":23.5477,"grahas":{"sun":{"sidereal_longitude":310.52009,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":130.26579000000004,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":false,"latitude":-2.7703},"mars":{"sidereal_longitude":89.40908999999999,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":3},"retrograde":true},"mercury":{"sidereal_longitude":307.42179,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":62.28548999999998,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":3},"retrograde":true},"venus":{"sidereal_longitude":318.49758999999995,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":122.98888999999997,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":168.0192,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":348.0192,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","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":1978,"month":2,"day":23,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2443562.770833,"kali_year":5079,"ahargana":1855097.2708,"sun":{"sidereal_longitude":310.7048,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":129.9931,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":179.2882,"elapsed_within_tithi_degrees":11.2882},"nakshatra":{"number":10,"name":"Maghā","pada":3,"moon_longitude":129.9931,"elapsed_within_degrees":9.9931},"yoga":{"number":7,"name":"Sukarma","sum_longitude":80.6979},"karana":{"half_tithi_index":29,"name":"Bava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.77,"elongation":179.288},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.77,"opposition_distance":0.712}},"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":"07:05","sunsetLocal":"18:20","solarNoonLocal":"12:42","dayLengthHours":11.242589321093226,"dayLengthDisplay":"11 Hours 14 Mins 33 Secs","nightLengthDisplay":"12 Hours 45 Mins 27 Secs","moonriseLocal":"18:11","moonsetLocal":"07:11","rahuKala":{"name":"Rāhu Kāla","start":"14:07","end":"15:31","startHours":14.109728614461043,"endHours":15.515052279597695,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:05","end":"08:29","startHours":7.083110288777776,"endHours":8.488433953914429,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:54","end":"11:18","startHours":9.893757619051083,"endHours":11.299081284187736,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:42","end":"10:05","startHours":9.706381130366196,"endHours":10.08113410773597,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:33","end":"07:51","startHours":7.551551510489994,"endHours":7.851353892385814,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:20","end":"13:05","startHours":12.329651971954615,"endHours":13.079157926694162,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:35","end":"06:20","startHours":5.58409837929868,"endHours":6.3336043340382275,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:09","end":"07:05","startHours":6.146227845353341,"endHours":7.083110288777776,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:35","end":"15:20","startHours":14.57816983617326,"endHours":15.327675790912808,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:08","end":"18:32","startHours":18.125699609871003,"endHours":18.525699609871,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:20","end":"18:48","startHours":18.325699609871002,"endHours":18.79414083158322,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:05","end":"19:50","startHours":18.075699609871002,"endHours":19.825699609871002,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:20","end":"01:05","startHours":24.329651971954615,"endHours":25.07915792669416,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"07:05","end":"08:29","startHours":7.083110288777776,"endHours":8.488433953914429,"quality":"auspicious"},{"name":"Roga","start":"08:29","end":"09:54","startHours":8.488433953914429,"endHours":9.893757619051083,"quality":"inauspicious"},{"name":"Udveg","start":"09:54","end":"11:18","startHours":9.893757619051083,"endHours":11.299081284187736,"quality":"inauspicious"},{"name":"Chala","start":"11:18","end":"12:42","startHours":11.299081284187736,"endHours":12.704404949324388,"quality":"neutral"},{"name":"Labha","start":"12:42","end":"14:07","startHours":12.704404949324388,"endHours":14.109728614461043,"quality":"auspicious"},{"name":"Amṛta","start":"14:07","end":"15:31","startHours":14.109728614461043,"endHours":15.515052279597695,"quality":"auspicious"},{"name":"Kāla","start":"15:31","end":"16:55","startHours":15.515052279597695,"endHours":16.92037594473435,"quality":"inauspicious"},{"name":"Śubha","start":"16:55","end":"18:20","startHours":16.92037594473435,"endHours":18.325699609871002,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"18:20","end":"19:55","startHours":18.325699609871002,"endHours":19.92037594473435,"quality":"auspicious"},{"name":"Kāla","start":"19:55","end":"21:31","startHours":19.92037594473435,"endHours":21.515052279597697,"quality":"inauspicious"},{"name":"Śubha","start":"21:31","end":"23:07","startHours":21.515052279597697,"endHours":23.10972861446104,"quality":"auspicious"},{"name":"Roga","start":"23:07","end":"00:42","startHours":23.10972861446104,"endHours":24.70440494932439,"quality":"inauspicious"},{"name":"Udveg","start":"00:42","end":"02:18","startHours":24.70440494932439,"endHours":26.299081284187736,"quality":"inauspicious"},{"name":"Chala","start":"02:18","end":"03:54","startHours":26.299081284187736,"endHours":27.893757619051083,"quality":"neutral"},{"name":"Labha","start":"03:54","end":"05:29","startHours":27.893757619051083,"endHours":29.48843395391443,"quality":"auspicious"},{"name":"Amṛta","start":"05:29","end":"07:05","startHours":29.48843395391443,"endHours":31.083110288777775,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:05","end":"08:05","startHours":7.083110288777776,"endHours":8.083110288777776,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"08:05","end":"09:05","startHours":8.083110288777776,"endHours":9.083110288777776,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"09:05","end":"10:05","startHours":9.083110288777776,"endHours":10.083110288777776,"planetary_lord":"Moon"},{"name":"Hora 4","start":"10:05","end":"11:05","startHours":10.083110288777776,"endHours":11.083110288777776,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"11:05","end":"12:05","startHours":11.083110288777776,"endHours":12.083110288777776,"planetary_lord":"Venus"},{"name":"Hora 6","start":"12:05","end":"13:05","startHours":12.083110288777776,"endHours":13.083110288777776,"planetary_lord":"Sun"},{"name":"Hora 7","start":"13:05","end":"14:05","startHours":13.083110288777776,"endHours":14.083110288777776,"planetary_lord":"Mars"},{"name":"Hora 8","start":"14:05","end":"15:05","startHours":14.083110288777776,"endHours":15.083110288777776,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"15:05","end":"16:05","startHours":15.083110288777776,"endHours":16.083110288777775,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"16:05","end":"17:05","startHours":16.083110288777775,"endHours":17.083110288777775,"planetary_lord":"Moon"},{"name":"Hora 11","start":"17:05","end":"18:05","startHours":17.083110288777775,"endHours":18.083110288777775,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"18:05","end":"19:05","startHours":18.083110288777775,"endHours":19.083110288777775,"planetary_lord":"Venus"},{"name":"Hora 13","start":"19:05","end":"20:05","startHours":19.083110288777775,"endHours":20.083110288777775,"planetary_lord":"Sun"},{"name":"Hora 14","start":"20:05","end":"21:05","startHours":20.083110288777775,"endHours":21.083110288777775,"planetary_lord":"Mars"},{"name":"Hora 15","start":"21:05","end":"22:05","startHours":21.083110288777775,"endHours":22.083110288777775,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"22:05","end":"23:05","startHours":22.083110288777775,"endHours":23.083110288777775,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"23:05","end":"00:05","startHours":23.083110288777775,"endHours":24.083110288777775,"planetary_lord":"Moon"},{"name":"Hora 18","start":"00:05","end":"01:05","startHours":24.083110288777775,"endHours":25.083110288777775,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"01:05","end":"02:05","startHours":25.083110288777775,"endHours":26.083110288777775,"planetary_lord":"Venus"},{"name":"Hora 20","start":"02:05","end":"03:05","startHours":26.083110288777775,"endHours":27.083110288777775,"planetary_lord":"Sun"},{"name":"Hora 21","start":"03:05","end":"04:05","startHours":27.083110288777775,"endHours":28.083110288777775,"planetary_lord":"Mars"},{"name":"Hora 22","start":"04:05","end":"05:05","startHours":28.083110288777775,"endHours":29.083110288777775,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"05:05","end":"06:05","startHours":29.083110288777775,"endHours":30.083110288777775,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"06:05","end":"07:05","startHours":30.083110288777775,"endHours":31.083110288777775,"planetary_lord":"Moon"}],"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":"South (Dakṣiṇa)","chandraVasa":"West","rahuVasa":"North-West","anandadiYoga":{"name":"Cara","quality":"Auspicious"},"tropicalRitu":"Śiśira (Winter) (tropical)","vedicRitu":"Śiśira (Winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-10.016475760084669,"eotMinutes":-13.968296959463448,"ayanamsa":23.5477}},"calendars":{"vikram_samvat":2035,"vikram_samvatsara":"Prajāpati","saka_samvat":1900,"saka_samvatsara":"Kālayukta","bengali_samvat":1385,"malayalam_era":1154,"nanakshahi_year":509,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Māgha","lunar_month_amanta":"Māgha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Kumbha (Māsi)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Pūrṇimā · Vikram 2035 Prajāpati · Śaka 1900 Kālayukta"},"festivals":[{"id":"magha-purnima","name":"Māghī Pūrṇimā","name_sanskrit":"माघी पूर्णिमा","tradition":"Pan-Hindu","significance":"Sacred snāna at Prayāga; Māgha-snāna culmination.","vrata":true,"detection":{"tithi_number":15,"tithi_paksha":"Śukla","lunar_month":"Māgha"},"precedence":2}],"todays_walk":{"walk":{"id":"guru-walk","name":"Bṛhaspati Walk","name_sanskrit":"गुरु यात्रा","type":"graha","description":"Wisdom transmission + BG 4.34.","step_count":8,"url":"/walk/guru-walk"},"reason":"Guruvāra (Thursday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3137-10-04","event":"Mahābhārata Day 1 (Bhagavad Gītā delivered)","chart_id":"krishna","shared_marker":"same Śukla Pūrṇimā","url":"/day/-3137-10-04","relevance":0.5},{"historical_date":"-0562-04-11","event":"Bhagavān Buddha's birth at Lumbinī","chart_id":"buddha","shared_marker":"same Śukla Pūrṇimā","url":"/day/-0562-04-11","relevance":0.5}]},"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 February 23, 1978 CE · Phoenix, USA · Vidhyamitra","description":"February 23, 1978 CE for Phoenix, USA: Śukla Pūrṇimā, sūryodaya 07:05, sūryāsta 18:20.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/phoenix/1978-02-23","hreflang_alternates":{"en":"https://vidhyamitra.com/city/phoenix/1978-02-23","sa":"https://sa.vidhyamitra.com/city/phoenix/1978-02-23","hi":"https://hi.vidhyamitra.com/city/phoenix/1978-02-23","x-default":"https://vidhyamitra.com/city/phoenix/1978-02-23"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T23:13:23.068Z","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":"2026-06-01T23:13:23.068Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T23:13:23.068Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}