{"id":"vidhyamitra:city-day:phoenix:1975-02-01:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/phoenix/1975-02-01","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1975-02-01","date_display":"February 1, 1975 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":1975,"month":2,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2442444.770833,"kali_year":5076,"ahargana":1853979.2708,"sun":{"sidereal_longitude":288.1156,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":166.2031,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":20,"name":"Pañcamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Pañcamī","elongation_degrees":238.0875,"elapsed_within_tithi_degrees":10.0875},"nakshatra":{"number":13,"name":"Hasta","pada":2,"moon_longitude":166.2031,"elapsed_within_degrees":6.2031},"yoga":{"number":8,"name":"Dhṛti","sum_longitude":94.3188},"karana":{"half_tithi_index":39,"name":"Taitila"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"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":1975,"month":2,"day":1,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2442444.770833,"ahargana":1853979.2708,"kali_year":5076,"ayanamsa_lahiri":23.505,"grahas":{"sun":{"sidereal_longitude":288.040806,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"moon":{"sidereal_longitude":169.67980599999999,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false,"latitude":-3.9369},"mars":{"sidereal_longitude":254.34120600000006,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":302.09220600000003,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":325.96020599999997,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":309.09080599999993,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":80.09690599999999,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":227.2563,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":47.2563,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","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":1975,"month":2,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2442444.770833,"kali_year":5076,"ahargana":1853979.2708,"sun":{"sidereal_longitude":288.1156,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":166.2031,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":20,"name":"Pañcamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Pañcamī","elongation_degrees":238.0875,"elapsed_within_tithi_degrees":10.0875},"nakshatra":{"number":13,"name":"Hasta","pada":2,"moon_longitude":166.2031,"elapsed_within_degrees":6.2031},"yoga":{"number":8,"name":"Dhṛti","sum_longitude":94.3188},"karana":{"half_tithi_index":39,"name":"Taitila"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.937,"elongation":121.912},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.937,"opposition_distance":58.088}},"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":"17:59","solarNoonLocal":"12:42","dayLengthHours":10.557314558894078,"dayLengthDisplay":"10 Hours 33 Mins 26 Secs","nightLengthDisplay":"13 Hours 26 Mins 34 Secs","moonriseLocal":"23:00","moonsetLocal":"10:38","rahuKala":{"name":"Rāhu Kāla","start":"10:04","end":"11:23","startHours":10.060427162233072,"endHours":11.380091482094834,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"14:01","end":"15:20","startHours":14.019420121818353,"endHours":15.33908444168011,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:25","end":"08:44","startHours":7.421098522509554,"endHours":8.740762842371314,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:53","end":"10:14","startHours":9.884471919584838,"endHours":10.236382404881308,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:52","end":"08:09","startHours":7.8609866291301405,"endHours":8.142515017367316,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:21","end":"13:03","startHours":12.347845316660122,"endHours":13.051666287253061,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"06:01","end":"06:43","startHours":6.013456581323677,"endHours":6.717277551916615,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:32","end":"07:25","startHours":6.541322309268381,"endHours":7.421098522509554,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:28","end":"15:10","startHours":14.459308228438939,"endHours":15.163129199031877,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:47","end":"18:11","startHours":17.77841308140363,"endHours":18.17841308140363,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:59","end":"18:25","startHours":17.97841308140363,"endHours":18.418301188024216,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:44","end":"19:29","startHours":17.72841308140363,"endHours":19.47841308140363,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:21","end":"01:03","startHours":24.347845316660123,"endHours":25.05166628725306,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"07:25","end":"08:44","startHours":7.421098522509554,"endHours":8.740762842371314,"quality":"inauspicious"},{"name":"Śubha","start":"08:44","end":"10:04","startHours":8.740762842371314,"endHours":10.060427162233072,"quality":"auspicious"},{"name":"Roga","start":"10:04","end":"11:23","startHours":10.060427162233072,"endHours":11.380091482094834,"quality":"inauspicious"},{"name":"Udveg","start":"11:23","end":"12:42","startHours":11.380091482094834,"endHours":12.699755801956591,"quality":"inauspicious"},{"name":"Chala","start":"12:42","end":"14:01","startHours":12.699755801956591,"endHours":14.019420121818353,"quality":"neutral"},{"name":"Labha","start":"14:01","end":"15:20","startHours":14.019420121818353,"endHours":15.33908444168011,"quality":"auspicious"},{"name":"Amṛta","start":"15:20","end":"16:40","startHours":15.33908444168011,"endHours":16.658748761541872,"quality":"auspicious"},{"name":"Kāla","start":"16:40","end":"17:59","startHours":16.658748761541872,"endHours":17.97841308140363,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"17:59","end":"19:40","startHours":17.97841308140363,"endHours":19.658748761541872,"quality":"auspicious"},{"name":"Amṛta","start":"19:40","end":"21:20","startHours":19.658748761541872,"endHours":21.33908444168011,"quality":"auspicious"},{"name":"Kāla","start":"21:20","end":"23:01","startHours":21.33908444168011,"endHours":23.01942012181835,"quality":"inauspicious"},{"name":"Śubha","start":"23:01","end":"00:42","startHours":23.01942012181835,"endHours":24.69975580195659,"quality":"auspicious"},{"name":"Roga","start":"00:42","end":"02:23","startHours":24.69975580195659,"endHours":26.380091482094834,"quality":"inauspicious"},{"name":"Udveg","start":"02:23","end":"04:04","startHours":26.380091482094834,"endHours":28.060427162233072,"quality":"inauspicious"},{"name":"Chala","start":"04:04","end":"05:44","startHours":28.060427162233072,"endHours":29.74076284237131,"quality":"neutral"},{"name":"Labha","start":"05:44","end":"07:25","startHours":29.74076284237131,"endHours":31.421098522509553,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:25","end":"08:25","startHours":7.421098522509554,"endHours":8.421098522509553,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"08:25","end":"09:25","startHours":8.421098522509553,"endHours":9.421098522509553,"planetary_lord":"Moon"},{"name":"Hora 3","start":"09:25","end":"10:25","startHours":9.421098522509553,"endHours":10.421098522509553,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"10:25","end":"11:25","startHours":10.421098522509553,"endHours":11.421098522509553,"planetary_lord":"Venus"},{"name":"Hora 5","start":"11:25","end":"12:25","startHours":11.421098522509553,"endHours":12.421098522509553,"planetary_lord":"Sun"},{"name":"Hora 6","start":"12:25","end":"13:25","startHours":12.421098522509553,"endHours":13.421098522509553,"planetary_lord":"Mars"},{"name":"Hora 7","start":"13:25","end":"14:25","startHours":13.421098522509553,"endHours":14.421098522509553,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"14:25","end":"15:25","startHours":14.421098522509553,"endHours":15.421098522509553,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"15:25","end":"16:25","startHours":15.421098522509553,"endHours":16.421098522509553,"planetary_lord":"Moon"},{"name":"Hora 10","start":"16:25","end":"17:25","startHours":16.421098522509553,"endHours":17.421098522509553,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"17:25","end":"18:25","startHours":17.421098522509553,"endHours":18.421098522509553,"planetary_lord":"Venus"},{"name":"Hora 12","start":"18:25","end":"19:25","startHours":18.421098522509553,"endHours":19.421098522509553,"planetary_lord":"Sun"},{"name":"Hora 13","start":"19:25","end":"20:25","startHours":19.421098522509553,"endHours":20.421098522509553,"planetary_lord":"Mars"},{"name":"Hora 14","start":"20:25","end":"21:25","startHours":20.421098522509553,"endHours":21.421098522509553,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"21:25","end":"22:25","startHours":21.421098522509553,"endHours":22.421098522509553,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"22:25","end":"23:25","startHours":22.421098522509553,"endHours":23.421098522509553,"planetary_lord":"Moon"},{"name":"Hora 17","start":"23:25","end":"00:25","startHours":23.421098522509553,"endHours":24.421098522509553,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"00:25","end":"01:25","startHours":24.421098522509553,"endHours":25.421098522509553,"planetary_lord":"Venus"},{"name":"Hora 19","start":"01:25","end":"02:25","startHours":25.421098522509553,"endHours":26.421098522509553,"planetary_lord":"Sun"},{"name":"Hora 20","start":"02:25","end":"03:25","startHours":26.421098522509553,"endHours":27.421098522509553,"planetary_lord":"Mars"},{"name":"Hora 21","start":"03:25","end":"04:25","startHours":27.421098522509553,"endHours":28.421098522509553,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"04:25","end":"05:25","startHours":28.421098522509553,"endHours":29.421098522509553,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"05:25","end":"06:25","startHours":29.421098522509553,"endHours":30.421098522509553,"planetary_lord":"Moon"},{"name":"Hora 24","start":"06:25","end":"07:25","startHours":30.421098522509553,"endHours":31.421098522509553,"planetary_lord":"Mercury"}],"taraBala":{"favorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Citrā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Mithuna","Karka","Kanyā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Tulā","Dhanu","Makara"]},"dishaShool":"East (Pūrva)","chandraVasa":"North-West","rahuVasa":"East","anandadiYoga":{"name":"Vajra","quality":"Inauspicious"},"tropicalRitu":"Śiśira (Winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-17.317904277942638,"eotMinutes":-13.689348117395623,"ayanamsa":23.505}},"calendars":{"vikram_samvat":2032,"vikram_samvatsara":"Vibhava","saka_samvat":1897,"saka_samvatsara":"Rākṣasa","bengali_samvat":1382,"malayalam_era":1151,"nanakshahi_year":506,"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 Pañcamī · Vikram 2032 Vibhava · Śaka 1897 Rākṣasa"},"festivals":[],"todays_walk":{"walk":{"id":"shani-walk","name":"Śani Walk","name_sanskrit":"शनि यात्रा","type":"graha","description":"Tapas + endurance + BG 17.14-19.","step_count":7,"url":"/walk/shani-walk"},"reason":"Śanivāra (Saturday) — 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 February 1, 1975 CE · Phoenix, USA · Vidhyamitra","description":"February 1, 1975 CE for Phoenix, USA: Kṛṣṇa Pañcamī, sūryodaya 07:25, sūryāsta 17:59.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/phoenix/1975-02-01","hreflang_alternates":{"en":"https://vidhyamitra.com/city/phoenix/1975-02-01","sa":"https://sa.vidhyamitra.com/city/phoenix/1975-02-01","hi":"https://hi.vidhyamitra.com/city/phoenix/1975-02-01","x-default":"https://vidhyamitra.com/city/phoenix/1975-02-01"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T07:24:03.899Z","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":"2026-06-02T07:24:03.899Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T07:24:03.899Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}