{"id":"vidhyamitra:city-day:phoenix:1971-08-01:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/phoenix/1971-08-01","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1971-08-01","date_display":"August 1, 1971 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":1971,"month":8,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2441164.770833,"kali_year":5073,"ahargana":1852699.2708,"sun":{"sidereal_longitude":104.2349,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":213.8088,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":109.5739,"elapsed_within_tithi_degrees":1.5739},"nakshatra":{"number":17,"name":"Anurādhā","pada":1,"moon_longitude":213.8088,"elapsed_within_degrees":0.4754},"yoga":{"number":24,"name":"Śukla","sum_longitude":318.0436},"karana":{"half_tithi_index":18,"name":"Taitila"},"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":1971,"month":8,"day":1,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2441164.770833,"ahargana":1852699.2708,"kali_year":5073,"ayanamsa_lahiri":23.456,"grahas":{"sun":{"sidereal_longitude":104.70161100000001,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":4},"retrograde":false},"moon":{"sidereal_longitude":212.40421100000003,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":16,"name":"Viśākhā","pada":4},"retrograde":false,"latitude":-4.4477},"mars":{"sidereal_longitude":296.22211100000004,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":true},"mercury":{"sidereal_longitude":132.20151099999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":213.96541100000002,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":97.76581099999999,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":41.37231099999997,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":295.0768,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":115.0768,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","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":1971,"month":8,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2441164.770833,"kali_year":5073,"ahargana":1852699.2708,"sun":{"sidereal_longitude":104.2349,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":213.8088,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":109.5739,"elapsed_within_tithi_degrees":1.5739},"nakshatra":{"number":17,"name":"Anurādhā","pada":1,"moon_longitude":213.8088,"elapsed_within_degrees":0.4754},"yoga":{"number":24,"name":"Śukla","sum_longitude":318.0436},"karana":{"half_tithi_index":18,"name":"Taitila"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.448,"elongation":109.574},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.448,"opposition_distance":70.426}},"eclipse_window_40days":[{"offset_days":6,"type":"lunar","occurs":true,"moon_latitude":-0.252,"opposition_distance":1.604},{"offset_days":20,"type":"solar","occurs":true,"moon_latitude":-0.93,"elongation":2.643}]},"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":"05:40","sunsetLocal":"19:29","solarNoonLocal":"12:34","dayLengthHours":13.81889400329338,"dayLengthDisplay":"13 Hours 49 Mins 08 Secs","nightLengthDisplay":"10 Hours 10 Mins 52 Secs","moonriseLocal":"14:35","moonsetLocal":"00:55","rahuKala":{"name":"Rāhu Kāla","start":"17:45","end":"19:29","startHours":17.75397974901352,"endHours":19.481341499425195,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:34","end":"14:18","startHours":12.571894497778505,"endHours":14.299256248190176,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"16:02","end":"17:45","startHours":16.02661799860185,"endHours":17.75397974901352,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:53","end":"09:21","startHours":8.886856096900269,"endHours":9.34748589701005,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:14","end":"06:36","startHours":6.238234746269038,"endHours":6.606738586356862,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:07","end":"13:02","startHours":12.111264697668725,"endHours":13.032524297888285,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:49","end":"04:44","startHours":3.819928295692697,"endHours":4.7411878959122555,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:31","end":"05:40","startHours":4.5108729958573655,"endHours":5.662447496131814,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:53","end":"15:48","startHours":14.8750434983274,"endHours":15.796303098546959,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:17","end":"19:41","startHours":19.281341499425196,"endHours":19.681341499425194,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:29","end":"20:03","startHours":19.481341499425195,"endHours":20.05712874956242,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:14","end":"20:59","startHours":19.231341499425195,"endHours":20.981341499425195,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:07","end":"01:02","startHours":24.111264697668727,"endHours":25.032524297888283,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"05:40","end":"07:23","startHours":5.662447496131814,"endHours":7.389809246543487,"quality":"inauspicious"},{"name":"Chala","start":"07:23","end":"09:07","startHours":7.389809246543487,"endHours":9.11717099695516,"quality":"neutral"},{"name":"Labha","start":"09:07","end":"10:51","startHours":9.11717099695516,"endHours":10.84453274736683,"quality":"auspicious"},{"name":"Amṛta","start":"10:51","end":"12:34","startHours":10.84453274736683,"endHours":12.571894497778505,"quality":"auspicious"},{"name":"Kāla","start":"12:34","end":"14:18","startHours":12.571894497778505,"endHours":14.299256248190176,"quality":"inauspicious"},{"name":"Śubha","start":"14:18","end":"16:02","startHours":14.299256248190176,"endHours":16.02661799860185,"quality":"auspicious"},{"name":"Roga","start":"16:02","end":"17:45","startHours":16.02661799860185,"endHours":17.75397974901352,"quality":"inauspicious"},{"name":"Udveg","start":"17:45","end":"19:29","startHours":17.75397974901352,"endHours":19.481341499425195,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"19:29","end":"20:45","startHours":19.481341499425195,"endHours":20.753979749013524,"quality":"auspicious"},{"name":"Roga","start":"20:45","end":"22:02","startHours":20.753979749013524,"endHours":22.02661799860185,"quality":"inauspicious"},{"name":"Udveg","start":"22:02","end":"23:18","startHours":22.02661799860185,"endHours":23.299256248190176,"quality":"inauspicious"},{"name":"Chala","start":"23:18","end":"00:34","startHours":23.299256248190176,"endHours":24.571894497778505,"quality":"neutral"},{"name":"Labha","start":"00:34","end":"01:51","startHours":24.571894497778505,"endHours":25.844532747366834,"quality":"auspicious"},{"name":"Amṛta","start":"01:51","end":"03:07","startHours":25.844532747366834,"endHours":27.11717099695516,"quality":"auspicious"},{"name":"Kāla","start":"03:07","end":"04:23","startHours":27.11717099695516,"endHours":28.389809246543486,"quality":"inauspicious"},{"name":"Śubha","start":"04:23","end":"05:40","startHours":28.389809246543486,"endHours":29.662447496131815,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:40","end":"06:40","startHours":5.662447496131814,"endHours":6.662447496131814,"planetary_lord":"Sun"},{"name":"Hora 2","start":"06:40","end":"07:40","startHours":6.662447496131814,"endHours":7.662447496131814,"planetary_lord":"Mars"},{"name":"Hora 3","start":"07:40","end":"08:40","startHours":7.662447496131814,"endHours":8.662447496131815,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"08:40","end":"09:40","startHours":8.662447496131815,"endHours":9.662447496131815,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"09:40","end":"10:40","startHours":9.662447496131815,"endHours":10.662447496131815,"planetary_lord":"Moon"},{"name":"Hora 6","start":"10:40","end":"11:40","startHours":10.662447496131815,"endHours":11.662447496131815,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"11:40","end":"12:40","startHours":11.662447496131815,"endHours":12.662447496131815,"planetary_lord":"Venus"},{"name":"Hora 8","start":"12:40","end":"13:40","startHours":12.662447496131815,"endHours":13.662447496131815,"planetary_lord":"Sun"},{"name":"Hora 9","start":"13:40","end":"14:40","startHours":13.662447496131815,"endHours":14.662447496131815,"planetary_lord":"Mars"},{"name":"Hora 10","start":"14:40","end":"15:40","startHours":14.662447496131815,"endHours":15.662447496131815,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"15:40","end":"16:40","startHours":15.662447496131815,"endHours":16.662447496131815,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"16:40","end":"17:40","startHours":16.662447496131815,"endHours":17.662447496131815,"planetary_lord":"Moon"},{"name":"Hora 13","start":"17:40","end":"18:40","startHours":17.662447496131815,"endHours":18.662447496131815,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"18:40","end":"19:40","startHours":18.662447496131815,"endHours":19.662447496131815,"planetary_lord":"Venus"},{"name":"Hora 15","start":"19:40","end":"20:40","startHours":19.662447496131815,"endHours":20.662447496131815,"planetary_lord":"Sun"},{"name":"Hora 16","start":"20:40","end":"21:40","startHours":20.662447496131815,"endHours":21.662447496131815,"planetary_lord":"Mars"},{"name":"Hora 17","start":"21:40","end":"22:40","startHours":21.662447496131815,"endHours":22.662447496131815,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"22:40","end":"23:40","startHours":22.662447496131815,"endHours":23.662447496131815,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"23:40","end":"00:40","startHours":23.662447496131815,"endHours":24.662447496131815,"planetary_lord":"Moon"},{"name":"Hora 20","start":"00:40","end":"01:40","startHours":24.662447496131815,"endHours":25.662447496131815,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"01:40","end":"02:40","startHours":25.662447496131815,"endHours":26.662447496131815,"planetary_lord":"Venus"},{"name":"Hora 22","start":"02:40","end":"03:40","startHours":26.662447496131815,"endHours":27.662447496131815,"planetary_lord":"Sun"},{"name":"Hora 23","start":"03:40","end":"04:40","startHours":27.662447496131815,"endHours":28.662447496131815,"planetary_lord":"Mars"},{"name":"Hora 24","start":"04:40","end":"05:40","startHours":28.662447496131815,"endHours":29.662447496131815,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Revatī"],"unfavorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Citrā","Svātī","Viśākhā","Anurādhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Vṛścika","Makara"],"unfavorable_rashis":["Mithuna","Karka","Tulā","Dhanu","Kumbha","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"North-East","rahuVasa":"North-East","anandadiYoga":{"name":"Mṛtyu","quality":"Inauspicious"},"drikRitu":"Varṣā (Monsoon) (Drik)","vedicRitu":"Grīṣma (Summer)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":18.224595074308386,"eotMinutes":-6.017669866710306,"ayanamsa":23.456}},"calendars":{"vikram_samvat":2028,"vikram_samvatsara":"Raktākṣī","saka_samvat":1893,"saka_samvatsara":"Virodhakṛt","bengali_samvat":1378,"malayalam_era":1147,"nanakshahi_year":502,"lunar_month":"Śrāvaṇa","lunar_month_paksha_full":"Śrāvaṇa Śukla Pakṣa","solar_month":"Karkaṭa (Āḍi)","ritu":"Varṣā (Monsoon)","display_summary":"Śrāvaṇa Śukla Daśamī · Vikram 2028 Raktākṣī · Śaka 1893 Virodhakṛt"},"festivals":[{"id":"karka-sankranti","name":"Karka Saṅkrānti (Dakṣiṇāyana)","name_sanskrit":"कर्क सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Cancer; Dakṣiṇāyana (south-going) begins. Devatā-rātri begins.","vrata":true,"detection":{"sun_rashi":"Karka"},"precedence":2}],"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 August 1, 1971 CE · Phoenix, USA · Vidhyamitra","description":"August 1, 1971 CE for Phoenix, USA: Śukla Daśamī, sūryodaya 05:40, sūryāsta 19:29.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/phoenix/1971-08-01","hreflang_alternates":{"en":"https://vidhyamitra.com/city/phoenix/1971-08-01","sa":"https://sa.vidhyamitra.com/city/phoenix/1971-08-01","hi":"https://hi.vidhyamitra.com/city/phoenix/1971-08-01","x-default":"https://vidhyamitra.com/city/phoenix/1971-08-01"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-24T09:24:57.052Z","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":"2026-05-24T09:24:57.052Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-24T09:24:57.052Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}