{"id":"vidhyamitra:city-day:phoenix:2018-10-16:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/phoenix/2018-10-16","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2018-10-16","date_display":"October 16, 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":10,"day":16,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458407.770833,"kali_year":5120,"ahargana":1869942.2708,"sun":{"sidereal_longitude":177.7376,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":260.3435,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":7,"name":"Saptamī","paksha":"Śukla","full_name":"Śukla Saptamī","elongation_degrees":82.6059,"elapsed_within_tithi_degrees":10.6059},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3,"moon_longitude":260.3435,"elapsed_within_degrees":7.0101},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":78.081},"karana":{"half_tithi_index":13,"name":"Vaṇija"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"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":10,"day":16,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2458407.770833,"ahargana":1869942.2708,"kali_year":5120,"ayanamsa_lahiri":24.1155,"grahas":{"sun":{"sidereal_longitude":178.516302,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":260.810202,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3},"retrograde":false,"latitude":1.6197},"mars":{"sidereal_longitude":288.260402,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":194.68680199999994,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":210.831002,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":16,"name":"Viśākhā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":194.536702,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":3},"retrograde":true},"saturn":{"sidereal_longitude":249.56760199999997,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":101.4597,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":281.4597,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"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":10,"day":16,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458407.770833,"kali_year":5120,"ahargana":1869942.2708,"sun":{"sidereal_longitude":177.7376,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":260.3435,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":7,"name":"Saptamī","paksha":"Śukla","full_name":"Śukla Saptamī","elongation_degrees":82.6059,"elapsed_within_tithi_degrees":10.6059},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3,"moon_longitude":260.3435,"elapsed_within_degrees":7.0101},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":78.081},"karana":{"half_tithi_index":13,"name":"Vaṇija"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":1.62,"elongation":82.606},"lunar":{"type":"lunar","occurs":false,"moon_latitude":1.62,"opposition_distance":97.394}},"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":"06:33","sunsetLocal":"17:54","solarNoonLocal":"12:13","dayLengthHours":11.3523344291228,"dayLengthDisplay":"11 Hours 21 Mins 08 Secs","nightLengthDisplay":"12 Hours 38 Mins 52 Secs","moonriseLocal":"12:43","moonsetLocal":"22:42","rahuKala":{"name":"Rāhu Kāla","start":"15:04","end":"16:29","startHours":15.058888114427683,"endHours":16.477929918068032,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:23","end":"10:48","startHours":9.382720899866282,"endHours":10.801762703506633,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:13","end":"13:38","startHours":12.220804507146983,"endHours":13.639846310787332,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:12","end":"09:34","startHours":9.193515326047569,"endHours":9.571926473684996,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:01","end":"07:19","startHours":7.017651227132365,"endHours":7.320380145242306,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:51","end":"12:36","startHours":11.842393359509556,"endHours":12.59921565478441,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:02","end":"05:47","startHours":5.030992702035876,"endHours":5.787814997310729,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:36","end":"06:33","startHours":5.598609423492015,"endHours":6.544637292585582,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:07","end":"14:52","startHours":14.112860245334115,"endHours":14.869682540608968,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:42","end":"18:06","startHours":17.696971721708383,"endHours":18.096971721708382,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:54","end":"18:22","startHours":17.896971721708383,"endHours":18.369985656255167,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:39","end":"19:24","startHours":17.646971721708383,"endHours":19.396971721708383,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:51","end":"00:36","startHours":23.842393359509558,"endHours":24.59921565478441,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"06:33","end":"07:58","startHours":6.544637292585582,"endHours":7.963679096225932,"quality":"inauspicious"},{"name":"Udveg","start":"07:58","end":"09:23","startHours":7.963679096225932,"endHours":9.382720899866282,"quality":"inauspicious"},{"name":"Chala","start":"09:23","end":"10:48","startHours":9.382720899866282,"endHours":10.801762703506633,"quality":"neutral"},{"name":"Labha","start":"10:48","end":"12:13","startHours":10.801762703506633,"endHours":12.220804507146983,"quality":"auspicious"},{"name":"Amṛta","start":"12:13","end":"13:38","startHours":12.220804507146983,"endHours":13.639846310787332,"quality":"auspicious"},{"name":"Kāla","start":"13:38","end":"15:04","startHours":13.639846310787332,"endHours":15.058888114427683,"quality":"inauspicious"},{"name":"Śubha","start":"15:04","end":"16:29","startHours":15.058888114427683,"endHours":16.477929918068032,"quality":"auspicious"},{"name":"Roga","start":"16:29","end":"17:54","startHours":16.477929918068032,"endHours":17.896971721708383,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"17:54","end":"19:29","startHours":17.896971721708383,"endHours":19.477929918068032,"quality":"inauspicious"},{"name":"Śubha","start":"19:29","end":"21:04","startHours":19.477929918068032,"endHours":21.05888811442768,"quality":"auspicious"},{"name":"Roga","start":"21:04","end":"22:38","startHours":21.05888811442768,"endHours":22.639846310787334,"quality":"inauspicious"},{"name":"Udveg","start":"22:38","end":"00:13","startHours":22.639846310787334,"endHours":24.220804507146983,"quality":"inauspicious"},{"name":"Chala","start":"00:13","end":"01:48","startHours":24.220804507146983,"endHours":25.801762703506633,"quality":"neutral"},{"name":"Labha","start":"01:48","end":"03:23","startHours":25.801762703506633,"endHours":27.382720899866282,"quality":"auspicious"},{"name":"Amṛta","start":"03:23","end":"04:58","startHours":27.382720899866282,"endHours":28.96367909622593,"quality":"auspicious"},{"name":"Kāla","start":"04:58","end":"06:33","startHours":28.96367909622593,"endHours":30.544637292585584,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:33","end":"07:33","startHours":6.544637292585582,"endHours":7.544637292585582,"planetary_lord":"Mars"},{"name":"Hora 2","start":"07:33","end":"08:33","startHours":7.544637292585582,"endHours":8.544637292585582,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"08:33","end":"09:33","startHours":8.544637292585582,"endHours":9.544637292585582,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"09:33","end":"10:33","startHours":9.544637292585582,"endHours":10.544637292585582,"planetary_lord":"Moon"},{"name":"Hora 5","start":"10:33","end":"11:33","startHours":10.544637292585582,"endHours":11.544637292585582,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"11:33","end":"12:33","startHours":11.544637292585582,"endHours":12.544637292585582,"planetary_lord":"Venus"},{"name":"Hora 7","start":"12:33","end":"13:33","startHours":12.544637292585582,"endHours":13.544637292585582,"planetary_lord":"Sun"},{"name":"Hora 8","start":"13:33","end":"14:33","startHours":13.544637292585582,"endHours":14.544637292585582,"planetary_lord":"Mars"},{"name":"Hora 9","start":"14:33","end":"15:33","startHours":14.544637292585582,"endHours":15.544637292585582,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"15:33","end":"16:33","startHours":15.544637292585582,"endHours":16.544637292585584,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"16:33","end":"17:33","startHours":16.544637292585584,"endHours":17.544637292585584,"planetary_lord":"Moon"},{"name":"Hora 12","start":"17:33","end":"18:33","startHours":17.544637292585584,"endHours":18.544637292585584,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"18:33","end":"19:33","startHours":18.544637292585584,"endHours":19.544637292585584,"planetary_lord":"Venus"},{"name":"Hora 14","start":"19:33","end":"20:33","startHours":19.544637292585584,"endHours":20.544637292585584,"planetary_lord":"Sun"},{"name":"Hora 15","start":"20:33","end":"21:33","startHours":20.544637292585584,"endHours":21.544637292585584,"planetary_lord":"Mars"},{"name":"Hora 16","start":"21:33","end":"22:33","startHours":21.544637292585584,"endHours":22.544637292585584,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"22:33","end":"23:33","startHours":22.544637292585584,"endHours":23.544637292585584,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"23:33","end":"00:33","startHours":23.544637292585584,"endHours":24.544637292585584,"planetary_lord":"Moon"},{"name":"Hora 19","start":"00:33","end":"01:33","startHours":24.544637292585584,"endHours":25.544637292585584,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"01:33","end":"02:33","startHours":25.544637292585584,"endHours":26.544637292585584,"planetary_lord":"Venus"},{"name":"Hora 21","start":"02:33","end":"03:33","startHours":26.544637292585584,"endHours":27.544637292585584,"planetary_lord":"Sun"},{"name":"Hora 22","start":"03:33","end":"04:33","startHours":27.544637292585584,"endHours":28.544637292585584,"planetary_lord":"Mars"},{"name":"Hora 23","start":"04:33","end":"05:33","startHours":28.544637292585584,"endHours":29.544637292585584,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"05:33","end":"06:33","startHours":29.544637292585584,"endHours":30.544637292585584,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Uttara Phalgunī","Hasta","Citrā","Svātī","Viśākhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","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":"North (Uttara)","chandraVasa":"East","rahuVasa":"North","anandadiYoga":{"name":"Dhātṛ","quality":"Auspicious"},"drikRitu":"Śarad (Autumn) (Drik)","vedicRitu":"Varṣā (Monsoon)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-8.80374968850287,"eotMinutes":15.04772957118102,"ayanamsa":24.1155}},"calendars":{"vikram_samvat":2075,"vikram_samvatsara":"Virodhakṛt","saka_samvat":1940,"saka_samvatsara":"Vilambī","bengali_samvat":1425,"malayalam_era":1194,"nanakshahi_year":549,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Śukla Pakṣa","solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Śukla Saptamī · Vikram 2075 Virodhakṛt · Śaka 1940 Vilambī"},"festivals":[{"id":"kanya-sankranti","name":"Kanyā Saṅkrānti (Mahālaya begins)","name_sanskrit":"कन्या सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Virgo; Mahālaya / Pitṛ-Pakṣa solar marker.","vrata":false,"detection":{"sun_rashi":"Kanyā"},"precedence":4}],"todays_walk":{"walk":{"id":"mangala-walk","name":"Maṅgala Walk","name_sanskrit":"मङ्गल यात्रा","type":"graha","description":"Right action + BG 2.31-38 (kṣatriya-dharma).","step_count":7,"url":"/walk/mangala-walk"},"reason":"Maṅgalavāra (Tuesday) — 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 16, 2018 CE · Phoenix, USA · Vidhyamitra","description":"October 16, 2018 CE for Phoenix, USA: Śukla Saptamī, sūryodaya 06:33, sūryāsta 17:54.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/phoenix/2018-10-16","hreflang_alternates":{"en":"https://vidhyamitra.com/city/phoenix/2018-10-16","sa":"https://sa.vidhyamitra.com/city/phoenix/2018-10-16","hi":"https://hi.vidhyamitra.com/city/phoenix/2018-10-16","x-default":"https://vidhyamitra.com/city/phoenix/2018-10-16"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T10:29:29.414Z","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":"2026-05-15T10:29:29.414Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T10:29:29.414Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}