{"id":"vidhyamitra:city-day:phoenix:1920-10-31:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/phoenix/1920-10-31","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1920-10-31","date_display":"October 31, 1920 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":1920,"month":10,"day":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2422628.770833,"kali_year":5022,"ahargana":1834163.2708,"sun":{"sidereal_longitude":194.0785,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":58.2106,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":224.1321,"elapsed_within_tithi_degrees":8.1321},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":2,"moon_longitude":58.2106,"elapsed_within_degrees":4.8772},"yoga":{"number":19,"name":"Parigha","sum_longitude":252.289},"karana":{"half_tithi_index":37,"name":"Bālava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"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":1920,"month":10,"day":31,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2422628.770833,"ahargana":1834163.2708,"kali_year":5022,"ayanamsa_lahiri":22.7471,"grahas":{"sun":{"sidereal_longitude":194.57172300000002,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":3},"retrograde":false},"moon":{"sidereal_longitude":60.852123000000006,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":3},"retrograde":false,"latitude":-2.951},"mars":{"sidereal_longitude":257.52762299999995,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":218.93282299999998,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":140.74812299999996,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"venus":{"sidereal_longitude":226.75672299999997,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":148.78822300000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":197.2033,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":17.2033,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2},"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":1920,"month":10,"day":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2422628.770833,"kali_year":5022,"ahargana":1834163.2708,"sun":{"sidereal_longitude":194.0785,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":58.2106,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":224.1321,"elapsed_within_tithi_degrees":8.1321},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":2,"moon_longitude":58.2106,"elapsed_within_degrees":4.8772},"yoga":{"number":19,"name":"Parigha","sum_longitude":252.289},"karana":{"half_tithi_index":37,"name":"Bālava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.951,"elongation":135.868},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.951,"opposition_distance":44.132}},"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":"06:45","sunsetLocal":"17:38","solarNoonLocal":"12:12","dayLengthHours":10.879294119186902,"dayLengthDisplay":"10 Hours 52 Mins 45 Secs","nightLengthDisplay":"13 Hours 07 Mins 15 Secs","moonriseLocal":"20:08","moonsetLocal":"10:26","rahuKala":{"name":"Rāhu Kāla","start":"16:17","end":"17:38","startHours":16.27712230218628,"endHours":17.637034067084645,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:12","end":"13:33","startHours":12.197387007491194,"endHours":13.557298772389556,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"14:55","end":"16:17","startHours":14.917210537287918,"endHours":16.27712230218628,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:18","end":"09:40","startHours":9.296241909041353,"endHours":9.658885046347583,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:13","end":"07:30","startHours":7.21104386953053,"endHours":7.501158379375514,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:50","end":"12:34","startHours":11.834743870184964,"endHours":12.560030144797425,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:18","end":"06:02","startHours":5.3071673986728225,"endHours":6.032453673285282,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:51","end":"06:45","startHours":5.851132104632168,"endHours":6.7577399478977425,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:01","end":"14:44","startHours":14.010602694022342,"endHours":14.735888968634802,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:26","end":"17:50","startHours":17.437034067084646,"endHours":17.837034067084645,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:38","end":"18:05","startHours":17.637034067084645,"endHours":18.090337988717433,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:23","end":"19:08","startHours":17.387034067084645,"endHours":19.137034067084645,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:50","end":"00:34","startHours":23.834743870184965,"endHours":24.560030144797423,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:45","end":"08:07","startHours":6.7577399478977425,"endHours":8.117651712796105,"quality":"inauspicious"},{"name":"Chala","start":"08:07","end":"09:29","startHours":8.117651712796105,"endHours":9.477563477694467,"quality":"neutral"},{"name":"Labha","start":"09:29","end":"10:50","startHours":9.477563477694467,"endHours":10.83747524259283,"quality":"auspicious"},{"name":"Amṛta","start":"10:50","end":"12:12","startHours":10.83747524259283,"endHours":12.197387007491194,"quality":"auspicious"},{"name":"Kāla","start":"12:12","end":"13:33","startHours":12.197387007491194,"endHours":13.557298772389556,"quality":"inauspicious"},{"name":"Śubha","start":"13:33","end":"14:55","startHours":13.557298772389556,"endHours":14.917210537287918,"quality":"auspicious"},{"name":"Roga","start":"14:55","end":"16:17","startHours":14.917210537287918,"endHours":16.27712230218628,"quality":"inauspicious"},{"name":"Udveg","start":"16:17","end":"17:38","startHours":16.27712230218628,"endHours":17.637034067084645,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"17:38","end":"19:17","startHours":17.637034067084645,"endHours":19.27712230218628,"quality":"auspicious"},{"name":"Roga","start":"19:17","end":"20:55","startHours":19.27712230218628,"endHours":20.91721053728792,"quality":"inauspicious"},{"name":"Udveg","start":"20:55","end":"22:33","startHours":20.91721053728792,"endHours":22.557298772389558,"quality":"inauspicious"},{"name":"Chala","start":"22:33","end":"00:12","startHours":22.557298772389558,"endHours":24.197387007491194,"quality":"neutral"},{"name":"Labha","start":"00:12","end":"01:50","startHours":24.197387007491194,"endHours":25.83747524259283,"quality":"auspicious"},{"name":"Amṛta","start":"01:50","end":"03:29","startHours":25.83747524259283,"endHours":27.477563477694467,"quality":"auspicious"},{"name":"Kāla","start":"03:29","end":"05:07","startHours":27.477563477694467,"endHours":29.117651712796107,"quality":"inauspicious"},{"name":"Śubha","start":"05:07","end":"06:45","startHours":29.117651712796107,"endHours":30.757739947897743,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:45","end":"07:45","startHours":6.7577399478977425,"endHours":7.7577399478977425,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:45","end":"08:45","startHours":7.7577399478977425,"endHours":8.757739947897743,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:45","end":"09:45","startHours":8.757739947897743,"endHours":9.757739947897743,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:45","end":"10:45","startHours":9.757739947897743,"endHours":10.757739947897743,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:45","end":"11:45","startHours":10.757739947897743,"endHours":11.757739947897743,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:45","end":"12:45","startHours":11.757739947897743,"endHours":12.757739947897743,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:45","end":"13:45","startHours":12.757739947897743,"endHours":13.757739947897743,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:45","end":"14:45","startHours":13.757739947897743,"endHours":14.757739947897743,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:45","end":"15:45","startHours":14.757739947897743,"endHours":15.757739947897743,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:45","end":"16:45","startHours":15.757739947897743,"endHours":16.757739947897743,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:45","end":"17:45","startHours":16.757739947897743,"endHours":17.757739947897743,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:45","end":"18:45","startHours":17.757739947897743,"endHours":18.757739947897743,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:45","end":"19:45","startHours":18.757739947897743,"endHours":19.757739947897743,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:45","end":"20:45","startHours":19.757739947897743,"endHours":20.757739947897743,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:45","end":"21:45","startHours":20.757739947897743,"endHours":21.757739947897743,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:45","end":"22:45","startHours":21.757739947897743,"endHours":22.757739947897743,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:45","end":"23:45","startHours":22.757739947897743,"endHours":23.757739947897743,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:45","end":"00:45","startHours":23.757739947897743,"endHours":24.757739947897743,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:45","end":"01:45","startHours":24.757739947897743,"endHours":25.757739947897743,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:45","end":"02:45","startHours":25.757739947897743,"endHours":26.757739947897743,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:45","end":"03:45","startHours":26.757739947897743,"endHours":27.757739947897743,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:45","end":"04:45","startHours":27.757739947897743,"endHours":28.757739947897743,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:45","end":"05:45","startHours":28.757739947897743,"endHours":29.757739947897743,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:45","end":"06:45","startHours":29.757739947897743,"endHours":30.757739947897743,"planetary_lord":"Jupiter"}],"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":["Meṣa","Mithuna","Siṃha","Vṛścika","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Karka","Kanyā","Tulā","Makara","Kumbha"]},"dishaShool":"West (Paścim)","chandraVasa":"South","rahuVasa":"North-East","anandadiYoga":{"name":"Saumya","quality":"Auspicious"},"tropicalRitu":"Śarad (Autumn) (tropical)","vedicRitu":"Śarad (Autumn)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-13.952959194450917,"eotMinutes":16.45277955052819,"ayanamsa":22.7471}},"calendars":{"vikram_samvat":1977,"vikram_samvatsara":"Śrīmukha","saka_samvat":1842,"saka_samvatsara":"Raudra","bengali_samvat":1327,"malayalam_era":1096,"nanakshahi_year":451,"lunar_month":"Kārtika","lunar_month_paksha_full":"Kārtika Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Kārtika","lunar_month_amanta":"Āśvina","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Tulā (Aippasi)","ritu":"Śarad (Autumn)","display_summary":"Kārtika Kṛṣṇa Caturthī · Vikram 1977 Śrīmukha · Śaka 1842 Raudra"},"festivals":[{"id":"karva-chauth","name":"Karvā Chauth","name_sanskrit":"करवा चौथ","tradition":"Pan-Hindu","associated_deity":"Pārvatī + Gaṇeśa + Chandra","significance":"North Indian wives' fast for husband's longevity. Kṛṣṇa Caturthī of Kārtika.","vrata":true,"detection":{"tithi_number":19,"tithi_paksha":"Kṛṣṇa","lunar_month":"Kārtika"},"precedence":2},{"id":"sankashti-chaturthi","name":"Saṅkaṣṭī Caturthī","name_sanskrit":"सङ्कष्टी चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Gaṇeśa vrata.","vrata":true,"detection":{"tithi_number":19,"tithi_paksha":"Kṛṣṇa"},"precedence":6}],"todays_walk":{"walk":{"id":"surya-walk","name":"Sūrya Walk","name_sanskrit":"सूर्य यात्रा","type":"graha","description":"Self-illumination + BG 4.1 (Sun-lineage of Gītā transmission).","step_count":6,"url":"/walk/surya-walk"},"reason":"Ravivāra (Sunday) — 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 October 31, 1920 CE · Phoenix, USA · Vidhyamitra","description":"October 31, 1920 CE for Phoenix, USA: Kṛṣṇa Caturthī, sūryodaya 06:45, sūryāsta 17:38.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/phoenix/1920-10-31","hreflang_alternates":{"en":"https://vidhyamitra.com/city/phoenix/1920-10-31","sa":"https://sa.vidhyamitra.com/city/phoenix/1920-10-31","hi":"https://hi.vidhyamitra.com/city/phoenix/1920-10-31","x-default":"https://vidhyamitra.com/city/phoenix/1920-10-31"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-03T03:27:18.005Z","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":"2026-06-03T03:27:18.005Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-03T03:27:18.005Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}