{"id":"vidhyamitra:city-day:phoenix:2026-01-28:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/phoenix/2026-01-28","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2026-01-28","date_display":"January 28, 2026 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":2026,"month":1,"day":28,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2461068.770833,"kali_year":5127,"ahargana":1872603.2708,"sun":{"sidereal_longitude":283.8242,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":40.1896,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":116.3654,"elapsed_within_tithi_degrees":8.3654},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1,"moon_longitude":40.1896,"elapsed_within_degrees":0.1896},"yoga":{"number":25,"name":"Brahma","sum_longitude":324.0138},"karana":{"half_tithi_index":19,"name":"Gara"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"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":2026,"month":1,"day":28,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2461068.770833,"ahargana":1872603.2708,"kali_year":5127,"ayanamsa_lahiri":24.2172,"grahas":{"sun":{"sidereal_longitude":283.8979320000001,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false},"moon":{"sidereal_longitude":38.16513199999997,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4},"retrograde":false,"latitude":4.4277},"mars":{"sidereal_longitude":279.021532,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":287.981532,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":83.44703199999998,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":2},"retrograde":true},"venus":{"sidereal_longitude":288.64763199999993,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":334.130132,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":320.4671,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":140.4671,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"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":2026,"month":1,"day":28,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2461068.770833,"kali_year":5127,"ahargana":1872603.2708,"sun":{"sidereal_longitude":283.8242,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":40.1896,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":116.3654,"elapsed_within_tithi_degrees":8.3654},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1,"moon_longitude":40.1896,"elapsed_within_degrees":0.1896},"yoga":{"number":25,"name":"Brahma","sum_longitude":324.0138},"karana":{"half_tithi_index":19,"name":"Gara"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.428,"elongation":116.365},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.428,"opposition_distance":63.635}},"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":"07:27","sunsetLocal":"17:55","solarNoonLocal":"12:41","dayLengthHours":10.467189238893766,"dayLengthDisplay":"10 Hours 28 Mins 02 Secs","nightLengthDisplay":"13 Hours 31 Mins 58 Secs","moonriseLocal":"13:18","moonsetLocal":"03:19","rahuKala":{"name":"Rāhu Kāla","start":"12:41","end":"14:00","startHours":12.687843867247764,"endHours":13.996242522109487,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"08:46","end":"10:04","startHours":8.762647902662604,"endHours":10.071046557524323,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"11:23","end":"12:41","startHours":11.379445212386045,"endHours":12.687843867247764,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:54","end":"10:15","startHours":9.896593403542761,"endHours":10.245499711505886,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:53","end":"08:10","startHours":7.890382132754789,"endHours":8.16950717912529,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:20","end":"13:02","startHours":12.33893755928464,"endHours":13.036750175210889,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"06:04","end":"06:45","startHours":6.0586240159483795,"endHours":6.756436631874631,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:35","end":"07:27","startHours":6.581983477893068,"endHours":7.454249247800882,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:26","end":"15:08","startHours":14.432375407063393,"endHours":15.130188022989644,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:43","end":"18:07","startHours":17.721438486694648,"endHours":18.121438486694647,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:55","end":"18:21","startHours":17.921438486694647,"endHours":18.357571371648554,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:40","end":"19:25","startHours":17.671438486694647,"endHours":19.421438486694647,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:20","end":"01:02","startHours":24.338937559284638,"endHours":25.03675017521089,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"07:27","end":"08:46","startHours":7.454249247800882,"endHours":8.762647902662604,"quality":"auspicious"},{"name":"Amṛta","start":"08:46","end":"10:04","startHours":8.762647902662604,"endHours":10.071046557524323,"quality":"auspicious"},{"name":"Kāla","start":"10:04","end":"11:23","startHours":10.071046557524323,"endHours":11.379445212386045,"quality":"inauspicious"},{"name":"Śubha","start":"11:23","end":"12:41","startHours":11.379445212386045,"endHours":12.687843867247764,"quality":"auspicious"},{"name":"Roga","start":"12:41","end":"14:00","startHours":12.687843867247764,"endHours":13.996242522109487,"quality":"inauspicious"},{"name":"Udveg","start":"14:00","end":"15:18","startHours":13.996242522109487,"endHours":15.304641176971206,"quality":"inauspicious"},{"name":"Chala","start":"15:18","end":"16:37","startHours":15.304641176971206,"endHours":16.61303983183293,"quality":"neutral"},{"name":"Labha","start":"16:37","end":"17:55","startHours":16.61303983183293,"endHours":17.921438486694647,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"17:55","end":"19:37","startHours":17.921438486694647,"endHours":19.61303983183293,"quality":"inauspicious"},{"name":"Chala","start":"19:37","end":"21:18","startHours":19.61303983183293,"endHours":21.304641176971206,"quality":"neutral"},{"name":"Labha","start":"21:18","end":"23:00","startHours":21.304641176971206,"endHours":22.996242522109483,"quality":"auspicious"},{"name":"Amṛta","start":"23:00","end":"00:41","startHours":22.996242522109483,"endHours":24.687843867247764,"quality":"auspicious"},{"name":"Kāla","start":"00:41","end":"02:23","startHours":24.687843867247764,"endHours":26.379445212386045,"quality":"inauspicious"},{"name":"Śubha","start":"02:23","end":"04:04","startHours":26.379445212386045,"endHours":28.071046557524323,"quality":"auspicious"},{"name":"Roga","start":"04:04","end":"05:46","startHours":28.071046557524323,"endHours":29.7626479026626,"quality":"inauspicious"},{"name":"Udveg","start":"05:46","end":"07:27","startHours":29.7626479026626,"endHours":31.45424924780088,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:27","end":"08:27","startHours":7.454249247800882,"endHours":8.454249247800881,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"08:27","end":"09:27","startHours":8.454249247800881,"endHours":9.454249247800881,"planetary_lord":"Venus"},{"name":"Hora 3","start":"09:27","end":"10:27","startHours":9.454249247800881,"endHours":10.454249247800881,"planetary_lord":"Sun"},{"name":"Hora 4","start":"10:27","end":"11:27","startHours":10.454249247800881,"endHours":11.454249247800881,"planetary_lord":"Mars"},{"name":"Hora 5","start":"11:27","end":"12:27","startHours":11.454249247800881,"endHours":12.454249247800881,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"12:27","end":"13:27","startHours":12.454249247800881,"endHours":13.454249247800881,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"13:27","end":"14:27","startHours":13.454249247800881,"endHours":14.454249247800881,"planetary_lord":"Moon"},{"name":"Hora 8","start":"14:27","end":"15:27","startHours":14.454249247800881,"endHours":15.454249247800881,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"15:27","end":"16:27","startHours":15.454249247800881,"endHours":16.45424924780088,"planetary_lord":"Venus"},{"name":"Hora 10","start":"16:27","end":"17:27","startHours":16.45424924780088,"endHours":17.45424924780088,"planetary_lord":"Sun"},{"name":"Hora 11","start":"17:27","end":"18:27","startHours":17.45424924780088,"endHours":18.45424924780088,"planetary_lord":"Mars"},{"name":"Hora 12","start":"18:27","end":"19:27","startHours":18.45424924780088,"endHours":19.45424924780088,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"19:27","end":"20:27","startHours":19.45424924780088,"endHours":20.45424924780088,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"20:27","end":"21:27","startHours":20.45424924780088,"endHours":21.45424924780088,"planetary_lord":"Moon"},{"name":"Hora 15","start":"21:27","end":"22:27","startHours":21.45424924780088,"endHours":22.45424924780088,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"22:27","end":"23:27","startHours":22.45424924780088,"endHours":23.45424924780088,"planetary_lord":"Venus"},{"name":"Hora 17","start":"23:27","end":"00:27","startHours":23.45424924780088,"endHours":24.45424924780088,"planetary_lord":"Sun"},{"name":"Hora 18","start":"00:27","end":"01:27","startHours":24.45424924780088,"endHours":25.45424924780088,"planetary_lord":"Mars"},{"name":"Hora 19","start":"01:27","end":"02:27","startHours":25.45424924780088,"endHours":26.45424924780088,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"02:27","end":"03:27","startHours":26.45424924780088,"endHours":27.45424924780088,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"03:27","end":"04:27","startHours":27.45424924780088,"endHours":28.45424924780088,"planetary_lord":"Moon"},{"name":"Hora 22","start":"04:27","end":"05:27","startHours":28.45424924780088,"endHours":29.45424924780088,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"05:27","end":"06:27","startHours":29.45424924780088,"endHours":30.45424924780088,"planetary_lord":"Venus"},{"name":"Hora 24","start":"06:27","end":"07:27","startHours":30.45424924780088,"endHours":31.45424924780088,"planetary_lord":"Sun"}],"taraBala":{"favorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Citrā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa"],"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":"North (Uttara)","chandraVasa":"South-East","rahuVasa":"South-West","anandadiYoga":{"name":"Utpāta","quality":"Inauspicious"},"drikRitu":"Śiśira (Winter) (Drik)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-18.235579853214634,"eotMinutes":-12.974632034865841,"ayanamsa":24.2172}},"calendars":{"vikram_samvat":2083,"vikram_samvatsara":"Siddhārthī","saka_samvat":1948,"saka_samvatsara":"Parābhava","bengali_samvat":1433,"malayalam_era":1202,"nanakshahi_year":557,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Daśamī · Vikram 2083 Siddhārthī · Śaka 1948 Parābhava"},"festivals":[{"id":"makara-sankranti","name":"Makara Saṅkrānti (Uttarāyaṇa)","name_sanskrit":"मकर सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Capricorn; Uttarāyaṇa (north-going) begins. Bhīṣma's chosen mahaprasthāna time.","vrata":true,"detection":{"sun_rashi":"Makara"},"precedence":1,"sources":["Mahābhārata Bhīṣma-Stuti","Sūrya-Siddhānta"]},{"id":"pongal","name":"Pongal / Thai Pongal","name_sanskrit":"पोङ्गल","tradition":"Regional","associated_deity":"Sūrya Bhagavān","significance":"Tamil 4-day harvest festival; coincides with Makara Saṅkrānti.","vrata":false,"detection":{"sun_rashi":"Makara"},"precedence":2}],"todays_walk":{"walk":{"id":"budha-walk","name":"Budha Walk","name_sanskrit":"बुध यात्रा","type":"graha","description":"Discrimination + BG 2.41 (vyavasāyātmikā buddhi).","step_count":6,"url":"/walk/budha-walk"},"reason":"Budhavāra (Wednesday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3226-07-09","event":"Bhagavān Krishna's birth at Mathurā","chart_id":"krishna","shared_marker":"same Rohiṇī","url":"/day/-3226-07-09","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 January 28, 2026 CE · Phoenix, USA · Vidhyamitra","description":"January 28, 2026 CE for Phoenix, USA: Śukla Daśamī, sūryodaya 07:27, sūryāsta 17:55.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/phoenix/2026-01-28","hreflang_alternates":{"en":"https://vidhyamitra.com/city/phoenix/2026-01-28","sa":"https://sa.vidhyamitra.com/city/phoenix/2026-01-28","hi":"https://hi.vidhyamitra.com/city/phoenix/2026-01-28","x-default":"https://vidhyamitra.com/city/phoenix/2026-01-28"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-14T17:02:51.297Z","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":"2026-05-14T17:02:51.297Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-14T17:02:51.297Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}