{"id":"vidhyamitra:city-day:phoenix:2154-01-31:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/phoenix/2154-01-31","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2154-01-31","date_display":"January 31, 2154 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":2154,"month":1,"day":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2507822.770833,"kali_year":5255,"ahargana":1919357.2708,"sun":{"sidereal_longitude":284.7238,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":121.6929,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":17,"name":"Dvitīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvitīyā","elongation_degrees":196.9691,"elapsed_within_tithi_degrees":4.9691},"nakshatra":{"number":10,"name":"Maghā","pada":1,"moon_longitude":121.6929,"elapsed_within_degrees":1.6929},"yoga":{"number":4,"name":"Saubhāgya","sum_longitude":46.4167},"karana":{"half_tithi_index":32,"name":"Taitila"},"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":2154,"month":1,"day":31,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2507822.770833,"ahargana":1919357.2708,"kali_year":5255,"ayanamsa_lahiri":26.0054,"grahas":{"sun":{"sidereal_longitude":285.08908599999995,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false},"moon":{"sidereal_longitude":122.79048599999999,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":1},"retrograde":false,"latitude":3.9546},"mars":{"sidereal_longitude":292.08558600000003,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":260.193886,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3},"retrograde":true},"jupiter":{"sidereal_longitude":354.980786,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":false},"venus":{"sidereal_longitude":298.366986,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":113.71398599999998,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":3},"retrograde":true},"rahu":{"sidereal_longitude":3.2152,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":183.2152,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","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":2154,"month":1,"day":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2507822.770833,"kali_year":5255,"ahargana":1919357.2708,"sun":{"sidereal_longitude":284.7238,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":121.6929,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":17,"name":"Dvitīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvitīyā","elongation_degrees":196.9691,"elapsed_within_tithi_degrees":4.9691},"nakshatra":{"number":10,"name":"Maghā","pada":1,"moon_longitude":121.6929,"elapsed_within_degrees":1.6929},"yoga":{"number":4,"name":"Saubhāgya","sum_longitude":46.4167},"karana":{"half_tithi_index":32,"name":"Taitila"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.955,"elongation":163.031},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.955,"opposition_distance":16.969}},"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":"07:25","sunsetLocal":"17:58","solarNoonLocal":"12:42","dayLengthHours":10.54518148394787,"dayLengthDisplay":"10 Hours 32 Mins 43 Secs","nightLengthDisplay":"13 Hours 27 Mins 17 Secs","moonriseLocal":"19:18","moonsetLocal":"08:28","rahuKala":{"name":"Rāhu Kāla","start":"14:01","end":"15:20","startHours":14.015240827857518,"endHours":15.333388513351,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:25","end":"08:45","startHours":7.424502400390098,"endHours":8.742650085883582,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:04","end":"11:23","startHours":10.060797771377066,"endHours":11.37894545687055,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:53","end":"10:14","startHours":9.885044746644601,"endHours":10.23655079610953,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:52","end":"08:09","startHours":7.86388496222126,"endHours":8.145089801793203,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:21","end":"13:03","startHours":12.345587092899104,"endHours":13.048599191828961,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"06:01","end":"06:43","startHours":6.018478202530383,"endHours":6.72149030146024,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:33","end":"07:25","startHours":6.545737276727776,"endHours":7.424502400390098,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:27","end":"15:09","startHours":14.454623389688678,"endHours":15.157635488618535,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:46","end":"18:10","startHours":17.76968388433797,"endHours":18.169683884337967,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:58","end":"18:25","startHours":17.969683884337968,"endHours":18.409066446169128,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:43","end":"19:28","startHours":17.719683884337968,"endHours":19.469683884337968,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:21","end":"01:03","startHours":24.345587092899102,"endHours":25.048599191828963,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"07:25","end":"08:45","startHours":7.424502400390098,"endHours":8.742650085883582,"quality":"auspicious"},{"name":"Roga","start":"08:45","end":"10:04","startHours":8.742650085883582,"endHours":10.060797771377066,"quality":"inauspicious"},{"name":"Udveg","start":"10:04","end":"11:23","startHours":10.060797771377066,"endHours":11.37894545687055,"quality":"inauspicious"},{"name":"Chala","start":"11:23","end":"12:42","startHours":11.37894545687055,"endHours":12.697093142364032,"quality":"neutral"},{"name":"Labha","start":"12:42","end":"14:01","startHours":12.697093142364032,"endHours":14.015240827857518,"quality":"auspicious"},{"name":"Amṛta","start":"14:01","end":"15:20","startHours":14.015240827857518,"endHours":15.333388513351,"quality":"auspicious"},{"name":"Kāla","start":"15:20","end":"16:39","startHours":15.333388513351,"endHours":16.651536198844482,"quality":"inauspicious"},{"name":"Śubha","start":"16:39","end":"17:58","startHours":16.651536198844482,"endHours":17.969683884337968,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"17:58","end":"19:39","startHours":17.969683884337968,"endHours":19.651536198844486,"quality":"auspicious"},{"name":"Kāla","start":"19:39","end":"21:20","startHours":19.651536198844486,"endHours":21.333388513351,"quality":"inauspicious"},{"name":"Śubha","start":"21:20","end":"23:01","startHours":21.333388513351,"endHours":23.015240827857518,"quality":"auspicious"},{"name":"Roga","start":"23:01","end":"00:42","startHours":23.015240827857518,"endHours":24.697093142364032,"quality":"inauspicious"},{"name":"Udveg","start":"00:42","end":"02:23","startHours":24.697093142364032,"endHours":26.37894545687055,"quality":"inauspicious"},{"name":"Chala","start":"02:23","end":"04:04","startHours":26.37894545687055,"endHours":28.060797771377068,"quality":"neutral"},{"name":"Labha","start":"04:04","end":"05:45","startHours":28.060797771377068,"endHours":29.742650085883582,"quality":"auspicious"},{"name":"Amṛta","start":"05:45","end":"07:25","startHours":29.742650085883582,"endHours":31.424502400390097,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:25","end":"08:25","startHours":7.424502400390098,"endHours":8.424502400390098,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"08:25","end":"09:25","startHours":8.424502400390098,"endHours":9.424502400390098,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"09:25","end":"10:25","startHours":9.424502400390098,"endHours":10.424502400390098,"planetary_lord":"Moon"},{"name":"Hora 4","start":"10:25","end":"11:25","startHours":10.424502400390098,"endHours":11.424502400390098,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"11:25","end":"12:25","startHours":11.424502400390098,"endHours":12.424502400390098,"planetary_lord":"Venus"},{"name":"Hora 6","start":"12:25","end":"13:25","startHours":12.424502400390098,"endHours":13.424502400390098,"planetary_lord":"Sun"},{"name":"Hora 7","start":"13:25","end":"14:25","startHours":13.424502400390098,"endHours":14.424502400390098,"planetary_lord":"Mars"},{"name":"Hora 8","start":"14:25","end":"15:25","startHours":14.424502400390098,"endHours":15.424502400390098,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"15:25","end":"16:25","startHours":15.424502400390098,"endHours":16.424502400390097,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"16:25","end":"17:25","startHours":16.424502400390097,"endHours":17.424502400390097,"planetary_lord":"Moon"},{"name":"Hora 11","start":"17:25","end":"18:25","startHours":17.424502400390097,"endHours":18.424502400390097,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"18:25","end":"19:25","startHours":18.424502400390097,"endHours":19.424502400390097,"planetary_lord":"Venus"},{"name":"Hora 13","start":"19:25","end":"20:25","startHours":19.424502400390097,"endHours":20.424502400390097,"planetary_lord":"Sun"},{"name":"Hora 14","start":"20:25","end":"21:25","startHours":20.424502400390097,"endHours":21.424502400390097,"planetary_lord":"Mars"},{"name":"Hora 15","start":"21:25","end":"22:25","startHours":21.424502400390097,"endHours":22.424502400390097,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"22:25","end":"23:25","startHours":22.424502400390097,"endHours":23.424502400390097,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"23:25","end":"00:25","startHours":23.424502400390097,"endHours":24.424502400390097,"planetary_lord":"Moon"},{"name":"Hora 18","start":"00:25","end":"01:25","startHours":24.424502400390097,"endHours":25.424502400390097,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"01:25","end":"02:25","startHours":25.424502400390097,"endHours":26.424502400390097,"planetary_lord":"Venus"},{"name":"Hora 20","start":"02:25","end":"03:25","startHours":26.424502400390097,"endHours":27.424502400390097,"planetary_lord":"Sun"},{"name":"Hora 21","start":"03:25","end":"04:25","startHours":27.424502400390097,"endHours":28.424502400390097,"planetary_lord":"Mars"},{"name":"Hora 22","start":"04:25","end":"05:25","startHours":28.424502400390097,"endHours":29.424502400390097,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"05:25","end":"06:25","startHours":29.424502400390097,"endHours":30.424502400390097,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"06:25","end":"07:25","startHours":30.424502400390097,"endHours":31.424502400390097,"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":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-17.44209470580606,"eotMinutes":-13.52958854184206,"ayanamsa":26.0054}},"calendars":{"vikram_samvat":2211,"vikram_samvatsara":"Prabhava","saka_samvat":2076,"saka_samvatsara":"Ānanda","bengali_samvat":1561,"malayalam_era":1330,"nanakshahi_year":685,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Māgha","lunar_month_amanta":"Pauṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Kṛṣṇa Dvitīyā · Vikram 2211 Prabhava · Śaka 2076 Ānanda"},"festivals":[],"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":[]},"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 31, 2154 CE · Phoenix, USA · Vidhyamitra","description":"January 31, 2154 CE for Phoenix, USA: Kṛṣṇa Dvitīyā, sūryodaya 07:25, sūryāsta 17:58.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/phoenix/2154-01-31","hreflang_alternates":{"en":"https://vidhyamitra.com/city/phoenix/2154-01-31","sa":"https://sa.vidhyamitra.com/city/phoenix/2154-01-31","hi":"https://hi.vidhyamitra.com/city/phoenix/2154-01-31","x-default":"https://vidhyamitra.com/city/phoenix/2154-01-31"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T01:42:05.516Z","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":"2026-05-31T01:42:05.516Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T01:42:05.516Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}