{"id":"vidhyamitra:city-day:phoenix:1920-10-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/phoenix/1920-10-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1920-10-18","date_display":"October 18, 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":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2422615.770833,"kali_year":5022,"ahargana":1834150.2708,"sun":{"sidereal_longitude":181.077,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":251.967,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":6,"name":"Ṣaṣṭhī","paksha":"Śukla","full_name":"Śukla Ṣaṣṭhī","elongation_degrees":70.89,"elapsed_within_tithi_degrees":10.89},"nakshatra":{"number":19,"name":"Mūla","pada":4,"moon_longitude":251.967,"elapsed_within_degrees":11.967},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":73.044},"karana":{"half_tithi_index":11,"name":"Taitila"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"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":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2422615.770833,"ahargana":1834150.2708,"kali_year":5022,"ayanamsa_lahiri":22.7466,"grahas":{"sun":{"sidereal_longitude":181.61221999999998,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":250.06511999999998,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":4},"retrograde":false,"latitude":3.6427},"mars":{"sidereal_longitude":247.98811999999998,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":205.72591999999997,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":138.47012,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":false},"venus":{"sidereal_longitude":210.79462,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":16,"name":"Viśākhā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":147.40902,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":197.8921,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":17.8921,"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":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2422615.770833,"kali_year":5022,"ahargana":1834150.2708,"sun":{"sidereal_longitude":181.077,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":251.967,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":6,"name":"Ṣaṣṭhī","paksha":"Śukla","full_name":"Śukla Ṣaṣṭhī","elongation_degrees":70.89,"elapsed_within_tithi_degrees":10.89},"nakshatra":{"number":19,"name":"Mūla","pada":4,"moon_longitude":251.967,"elapsed_within_degrees":11.967},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":73.044},"karana":{"half_tithi_index":11,"name":"Taitila"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.643,"elongation":70.89},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.643,"opposition_distance":109.11}},"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":"06:34","sunsetLocal":"17:52","solarNoonLocal":"12:13","dayLengthHours":11.29470628744469,"dayLengthDisplay":"11 Hours 17 Mins 41 Secs","nightLengthDisplay":"12 Hours 42 Mins 19 Secs","moonriseLocal":"11:50","moonsetLocal":"21:43","rahuKala":{"name":"Rāhu Kāla","start":"07:59","end":"09:23","startHours":7.979490838821264,"endHours":9.39132912475185,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:48","end":"12:13","startHours":10.803167410682438,"endHours":12.215005696613023,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:38","end":"15:02","startHours":13.626843982543608,"endHours":15.038682268474195,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:12","end":"09:35","startHours":9.203084019961105,"endHours":9.579574229542596,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:02","end":"07:20","startHours":7.03826531486754,"endHours":7.3394574825327314,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:50","end":"12:35","startHours":11.838515487031533,"endHours":12.591495906194513,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:04","end":"05:49","startHours":5.061691714564719,"endHours":5.814672133727699,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:38","end":"06:34","startHours":5.626427028936954,"endHours":6.567652552890678,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:06","end":"14:51","startHours":14.097456744520471,"endHours":14.85043716368345,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:40","end":"18:04","startHours":17.66235884033537,"endHours":18.062358840335367,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:52","end":"18:20","startHours":17.862358840335368,"endHours":18.33297160231223,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:37","end":"19:22","startHours":17.612358840335368,"endHours":19.362358840335368,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:50","end":"00:35","startHours":23.838515487031533,"endHours":24.591495906194513,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"06:34","end":"07:59","startHours":6.567652552890678,"endHours":7.979490838821264,"quality":"auspicious"},{"name":"Kāla","start":"07:59","end":"09:23","startHours":7.979490838821264,"endHours":9.39132912475185,"quality":"inauspicious"},{"name":"Śubha","start":"09:23","end":"10:48","startHours":9.39132912475185,"endHours":10.803167410682438,"quality":"auspicious"},{"name":"Roga","start":"10:48","end":"12:13","startHours":10.803167410682438,"endHours":12.215005696613023,"quality":"inauspicious"},{"name":"Udveg","start":"12:13","end":"13:38","startHours":12.215005696613023,"endHours":13.626843982543608,"quality":"inauspicious"},{"name":"Chala","start":"13:38","end":"15:02","startHours":13.626843982543608,"endHours":15.038682268474195,"quality":"neutral"},{"name":"Labha","start":"15:02","end":"16:27","startHours":15.038682268474195,"endHours":16.450520554404783,"quality":"auspicious"},{"name":"Amṛta","start":"16:27","end":"17:52","startHours":16.450520554404783,"endHours":17.862358840335368,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"17:52","end":"19:27","startHours":17.862358840335368,"endHours":19.450520554404783,"quality":"neutral"},{"name":"Labha","start":"19:27","end":"21:02","startHours":19.450520554404783,"endHours":21.038682268474197,"quality":"auspicious"},{"name":"Amṛta","start":"21:02","end":"22:38","startHours":21.038682268474197,"endHours":22.62684398254361,"quality":"auspicious"},{"name":"Kāla","start":"22:38","end":"00:13","startHours":22.62684398254361,"endHours":24.215005696613023,"quality":"inauspicious"},{"name":"Śubha","start":"00:13","end":"01:48","startHours":24.215005696613023,"endHours":25.803167410682438,"quality":"auspicious"},{"name":"Roga","start":"01:48","end":"03:23","startHours":25.803167410682438,"endHours":27.39132912475185,"quality":"inauspicious"},{"name":"Udveg","start":"03:23","end":"04:59","startHours":27.39132912475185,"endHours":28.979490838821263,"quality":"inauspicious"},{"name":"Chala","start":"04:59","end":"06:34","startHours":28.979490838821263,"endHours":30.567652552890678,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"06:34","end":"07:34","startHours":6.567652552890678,"endHours":7.567652552890678,"planetary_lord":"Moon"},{"name":"Hora 2","start":"07:34","end":"08:34","startHours":7.567652552890678,"endHours":8.567652552890678,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"08:34","end":"09:34","startHours":8.567652552890678,"endHours":9.567652552890678,"planetary_lord":"Venus"},{"name":"Hora 4","start":"09:34","end":"10:34","startHours":9.567652552890678,"endHours":10.567652552890678,"planetary_lord":"Sun"},{"name":"Hora 5","start":"10:34","end":"11:34","startHours":10.567652552890678,"endHours":11.567652552890678,"planetary_lord":"Mars"},{"name":"Hora 6","start":"11:34","end":"12:34","startHours":11.567652552890678,"endHours":12.567652552890678,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"12:34","end":"13:34","startHours":12.567652552890678,"endHours":13.567652552890678,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"13:34","end":"14:34","startHours":13.567652552890678,"endHours":14.567652552890678,"planetary_lord":"Moon"},{"name":"Hora 9","start":"14:34","end":"15:34","startHours":14.567652552890678,"endHours":15.567652552890678,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"15:34","end":"16:34","startHours":15.567652552890678,"endHours":16.567652552890678,"planetary_lord":"Venus"},{"name":"Hora 11","start":"16:34","end":"17:34","startHours":16.567652552890678,"endHours":17.567652552890678,"planetary_lord":"Sun"},{"name":"Hora 12","start":"17:34","end":"18:34","startHours":17.567652552890678,"endHours":18.567652552890678,"planetary_lord":"Mars"},{"name":"Hora 13","start":"18:34","end":"19:34","startHours":18.567652552890678,"endHours":19.567652552890678,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"19:34","end":"20:34","startHours":19.567652552890678,"endHours":20.567652552890678,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"20:34","end":"21:34","startHours":20.567652552890678,"endHours":21.567652552890678,"planetary_lord":"Moon"},{"name":"Hora 16","start":"21:34","end":"22:34","startHours":21.567652552890678,"endHours":22.567652552890678,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"22:34","end":"23:34","startHours":22.567652552890678,"endHours":23.567652552890678,"planetary_lord":"Venus"},{"name":"Hora 18","start":"23:34","end":"00:34","startHours":23.567652552890678,"endHours":24.567652552890678,"planetary_lord":"Sun"},{"name":"Hora 19","start":"00:34","end":"01:34","startHours":24.567652552890678,"endHours":25.567652552890678,"planetary_lord":"Mars"},{"name":"Hora 20","start":"01:34","end":"02:34","startHours":25.567652552890678,"endHours":26.567652552890678,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"02:34","end":"03:34","startHours":26.567652552890678,"endHours":27.567652552890678,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"03:34","end":"04:34","startHours":27.567652552890678,"endHours":28.567652552890678,"planetary_lord":"Moon"},{"name":"Hora 23","start":"04:34","end":"05:34","startHours":28.567652552890678,"endHours":29.567652552890678,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"05:34","end":"06:34","startHours":29.567652552890678,"endHours":30.567652552890678,"planetary_lord":"Venus"}],"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","Kanyā","Tulā","Dhanu","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Makara","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"East","rahuVasa":"North-East","anandadiYoga":{"name":"Gada","quality":"Inauspicious"},"tropicalRitu":"Śarad (Autumn)","vedicRitu":"Śarad (Autumn)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-9.44174193127194,"eotMinutes":15.395658203218455,"ayanamsa":22.7466}},"calendars":{"vikram_samvat":1977,"vikram_samvatsara":"Śrīmukha","saka_samvat":1842,"saka_samvatsara":"Raudra","bengali_samvat":1327,"malayalam_era":1096,"nanakshahi_year":451,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Āśvina","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":"Āśvina Śukla Ṣaṣṭhī · Vikram 1977 Śrīmukha · Śaka 1842 Raudra"},"festivals":[],"todays_walk":{"walk":{"id":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7.","step_count":5,"url":"/walk/chandra-walk"},"reason":"Somavāra (Monday) — 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 18, 1920 CE · Phoenix, USA · Vidhyamitra","description":"October 18, 1920 CE for Phoenix, USA: Śukla Ṣaṣṭhī, sūryodaya 06:34, sūryāsta 17:52.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/phoenix/1920-10-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/phoenix/1920-10-18","sa":"https://sa.vidhyamitra.com/city/phoenix/1920-10-18","hi":"https://hi.vidhyamitra.com/city/phoenix/1920-10-18","x-default":"https://vidhyamitra.com/city/phoenix/1920-10-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T06:23:02.049Z","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":"2026-06-02T06:23:02.049Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T06:23:02.049Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}