{"id":"vidhyamitra:city-day:phoenix:2018-12-22:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/phoenix/2018-12-22","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2018-12-22","date_display":"December 22, 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":"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":2018,"month":12,"day":22,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458474.770833,"kali_year":5120,"ahargana":1870009.2708,"sun":{"sidereal_longitude":245.6344,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":55.0096,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":169.3752,"elapsed_within_tithi_degrees":1.3752},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":1,"moon_longitude":55.0096,"elapsed_within_degrees":1.6763},"yoga":{"number":23,"name":"Śubha","sum_longitude":300.644},"karana":{"half_tithi_index":28,"name":"Viṣṭi"},"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":12,"day":22,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2458474.770833,"ahargana":1870009.2708,"kali_year":5120,"ayanamsa_lahiri":24.118,"grahas":{"sun":{"sidereal_longitude":246.00604199999998,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false},"moon":{"sidereal_longitude":56.415142,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":1},"retrograde":false,"latitude":-3.0616},"mars":{"sidereal_longitude":328.86854199999993,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":225.479642,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":225.48224200000004,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":199.74984199999994,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":255.98474199999998,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":97.9097,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":277.9097,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","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":2018,"month":12,"day":22,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458474.770833,"kali_year":5120,"ahargana":1870009.2708,"sun":{"sidereal_longitude":245.6344,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":55.0096,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":169.3752,"elapsed_within_tithi_degrees":1.3752},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":1,"moon_longitude":55.0096,"elapsed_within_degrees":1.6763},"yoga":{"number":23,"name":"Śubha","sum_longitude":300.644},"karana":{"half_tithi_index":28,"name":"Viṣṭi"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.062,"elongation":169.375},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.062,"opposition_distance":10.625}},"eclipse_window_40days":[{"offset_days":15,"type":"solar","occurs":true,"moon_latitude":1.158,"elongation":1.13}]},"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":"07:29","sunsetLocal":"17:25","solarNoonLocal":"12:27","dayLengthHours":9.932274951704125,"dayLengthDisplay":"9 Hours 55 Mins 56 Secs","nightLengthDisplay":"14 Hours 04 Mins 04 Secs","moonriseLocal":"16:40","moonsetLocal":"06:58","rahuKala":{"name":"Rāhu Kāla","start":"09:58","end":"11:13","startHours":9.97331447708196,"endHours":11.214848846044976,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:42","end":"14:56","startHours":13.697917583971007,"endHours":14.939451952934023,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:29","end":"08:44","startHours":7.490245739155929,"endHours":8.731780108118945,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:48","end":"10:08","startHours":9.807776561220225,"endHours":10.138852392943695,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:54","end":"08:10","startHours":7.904090528810268,"endHours":8.168951194189045,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:08","end":"12:47","startHours":12.125307383284522,"endHours":12.787459046731463,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"06:10","end":"06:50","startHours":6.165942412262046,"endHours":6.828094075708988,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:40","end":"07:29","startHours":6.662556159847252,"endHours":7.490245739155929,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:07","end":"14:46","startHours":14.111762373625346,"endHours":14.773914037072288,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:13","end":"17:37","startHours":17.222520690860055,"endHours":17.622520690860053,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:25","end":"17:50","startHours":17.422520690860054,"endHours":17.83636548051439,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:10","end":"18:55","startHours":17.172520690860054,"endHours":18.922520690860054,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:08","end":"00:47","startHours":24.12530738328452,"endHours":24.787459046731463,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"07:29","end":"08:44","startHours":7.490245739155929,"endHours":8.731780108118945,"quality":"inauspicious"},{"name":"Śubha","start":"08:44","end":"09:58","startHours":8.731780108118945,"endHours":9.97331447708196,"quality":"auspicious"},{"name":"Roga","start":"09:58","end":"11:13","startHours":9.97331447708196,"endHours":11.214848846044976,"quality":"inauspicious"},{"name":"Udveg","start":"11:13","end":"12:27","startHours":11.214848846044976,"endHours":12.456383215007993,"quality":"inauspicious"},{"name":"Chala","start":"12:27","end":"13:42","startHours":12.456383215007993,"endHours":13.697917583971007,"quality":"neutral"},{"name":"Labha","start":"13:42","end":"14:56","startHours":13.697917583971007,"endHours":14.939451952934023,"quality":"auspicious"},{"name":"Amṛta","start":"14:56","end":"16:11","startHours":14.939451952934023,"endHours":16.180986321897038,"quality":"auspicious"},{"name":"Kāla","start":"16:11","end":"17:25","startHours":16.180986321897038,"endHours":17.422520690860054,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"17:25","end":"19:11","startHours":17.422520690860054,"endHours":19.180986321897038,"quality":"auspicious"},{"name":"Amṛta","start":"19:11","end":"20:56","startHours":19.180986321897038,"endHours":20.93945195293402,"quality":"auspicious"},{"name":"Kāla","start":"20:56","end":"22:42","startHours":20.93945195293402,"endHours":22.697917583971005,"quality":"inauspicious"},{"name":"Śubha","start":"22:42","end":"00:27","startHours":22.697917583971005,"endHours":24.456383215007993,"quality":"auspicious"},{"name":"Roga","start":"00:27","end":"02:13","startHours":24.456383215007993,"endHours":26.214848846044976,"quality":"inauspicious"},{"name":"Udveg","start":"02:13","end":"03:58","startHours":26.214848846044976,"endHours":27.97331447708196,"quality":"inauspicious"},{"name":"Chala","start":"03:58","end":"05:44","startHours":27.97331447708196,"endHours":29.731780108118947,"quality":"neutral"},{"name":"Labha","start":"05:44","end":"07:29","startHours":29.731780108118947,"endHours":31.49024573915593,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:29","end":"08:29","startHours":7.490245739155929,"endHours":8.49024573915593,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"08:29","end":"09:29","startHours":8.49024573915593,"endHours":9.49024573915593,"planetary_lord":"Moon"},{"name":"Hora 3","start":"09:29","end":"10:29","startHours":9.49024573915593,"endHours":10.49024573915593,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"10:29","end":"11:29","startHours":10.49024573915593,"endHours":11.49024573915593,"planetary_lord":"Venus"},{"name":"Hora 5","start":"11:29","end":"12:29","startHours":11.49024573915593,"endHours":12.49024573915593,"planetary_lord":"Sun"},{"name":"Hora 6","start":"12:29","end":"13:29","startHours":12.49024573915593,"endHours":13.49024573915593,"planetary_lord":"Mars"},{"name":"Hora 7","start":"13:29","end":"14:29","startHours":13.49024573915593,"endHours":14.49024573915593,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"14:29","end":"15:29","startHours":14.49024573915593,"endHours":15.49024573915593,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"15:29","end":"16:29","startHours":15.49024573915593,"endHours":16.49024573915593,"planetary_lord":"Moon"},{"name":"Hora 10","start":"16:29","end":"17:29","startHours":16.49024573915593,"endHours":17.49024573915593,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"17:29","end":"18:29","startHours":17.49024573915593,"endHours":18.49024573915593,"planetary_lord":"Venus"},{"name":"Hora 12","start":"18:29","end":"19:29","startHours":18.49024573915593,"endHours":19.49024573915593,"planetary_lord":"Sun"},{"name":"Hora 13","start":"19:29","end":"20:29","startHours":19.49024573915593,"endHours":20.49024573915593,"planetary_lord":"Mars"},{"name":"Hora 14","start":"20:29","end":"21:29","startHours":20.49024573915593,"endHours":21.49024573915593,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"21:29","end":"22:29","startHours":21.49024573915593,"endHours":22.49024573915593,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"22:29","end":"23:29","startHours":22.49024573915593,"endHours":23.49024573915593,"planetary_lord":"Moon"},{"name":"Hora 17","start":"23:29","end":"00:29","startHours":23.49024573915593,"endHours":24.49024573915593,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"00:29","end":"01:29","startHours":24.49024573915593,"endHours":25.49024573915593,"planetary_lord":"Venus"},{"name":"Hora 19","start":"01:29","end":"02:29","startHours":25.49024573915593,"endHours":26.49024573915593,"planetary_lord":"Sun"},{"name":"Hora 20","start":"02:29","end":"03:29","startHours":26.49024573915593,"endHours":27.49024573915593,"planetary_lord":"Mars"},{"name":"Hora 21","start":"03:29","end":"04:29","startHours":27.49024573915593,"endHours":28.49024573915593,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"04:29","end":"05:29","startHours":28.49024573915593,"endHours":29.49024573915593,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"05:29","end":"06:29","startHours":29.49024573915593,"endHours":30.49024573915593,"planetary_lord":"Moon"},{"name":"Hora 24","start":"06:29","end":"07:29","startHours":30.49024573915593,"endHours":31.49024573915593,"planetary_lord":"Mercury"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Maghā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Karka","Tulā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Siṃha","Kanyā","Dhanu","Makara"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-East","rahuVasa":"East","anandadiYoga":{"name":"Ānanda","quality":"Auspicious"},"tropicalRitu":"Hemanta (Pre-winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-23.436441793845123,"eotMinutes":0.9130070995203906,"ayanamsa":24.118}},"calendars":{"vikram_samvat":2075,"vikram_samvatsara":"Virodhakṛt","saka_samvat":1940,"saka_samvatsara":"Vilambī","bengali_samvat":1425,"malayalam_era":1194,"nanakshahi_year":549,"lunar_month":"Mārgaśīrṣa","lunar_month_paksha_full":"Mārgaśīrṣa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Mārgaśīrṣa","lunar_month_amanta":"Mārgaśīrṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Mārgaśīrṣa Śukla Pūrṇimā · Vikram 2075 Virodhakṛt · Śaka 1940 Vilambī"},"festivals":[{"id":"datta-jayanti","name":"Datta Jayantī","name_sanskrit":"दत्त जयन्ती","tradition":"Pan-Hindu","associated_deity":"Dattātreya (Brahmā + Viṣṇu + Śiva combined)","significance":"Birth of Dattātreya from Atri-Anusūyā; tri-mūrti unified avatāra.","vrata":true,"detection":{"tithi_number":15,"tithi_paksha":"Śukla","lunar_month":"Mārgaśīrṣa"},"precedence":2,"sources":["Mārkaṇḍeya Purāṇa","Bhāgavata 4.1.15"]},{"id":"annapurna-jayanti","name":"Annapūrṇā Jayantī","name_sanskrit":"अन्नपूर्णा जयन्ती","tradition":"Shakta","associated_deity":"Devī Annapūrṇā (Pārvatī as nourishing mother)","significance":"Devī Annapūrṇā's manifestation; food-grain pūjā; Mārgaśīrṣa Pūrṇimā tradition.","vrata":true,"detection":{"tithi_number":15,"tithi_paksha":"Śukla","lunar_month":"Mārgaśīrṣa"},"precedence":3,"sources":["Annapūrṇā-stotra by Śaṅkarācārya"]}],"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":[{"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 December 22, 2018 CE · Phoenix, USA · Vidhyamitra","description":"December 22, 2018 CE for Phoenix, USA: Śukla Pūrṇimā, sūryodaya 07:29, sūryāsta 17:25.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/phoenix/2018-12-22","hreflang_alternates":{"en":"https://vidhyamitra.com/city/phoenix/2018-12-22","sa":"https://sa.vidhyamitra.com/city/phoenix/2018-12-22","hi":"https://hi.vidhyamitra.com/city/phoenix/2018-12-22","x-default":"https://vidhyamitra.com/city/phoenix/2018-12-22"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T15:47:40.811Z","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":"2026-05-31T15:47:40.811Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T15:47:40.811Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}