{"id":"vidhyamitra:city-day:phoenix:1985-02-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/phoenix/1985-02-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1985-02-13","date_display":"February 13, 1985 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":1985,"month":2,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2446109.770833,"kali_year":5086,"ahargana":1857644.2708,"sun":{"sidereal_longitude":300.7639,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":217.8292,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":24,"name":"Navamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Navamī","elongation_degrees":277.0653,"elapsed_within_tithi_degrees":1.0653},"nakshatra":{"number":17,"name":"Anurādhā","pada":2,"moon_longitude":217.8292,"elapsed_within_degrees":4.4959},"yoga":{"number":12,"name":"Dhruva","sum_longitude":158.5931},"karana":{"half_tithi_index":46,"name":"Taitila"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"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":1985,"month":2,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2446109.770833,"ahargana":1857644.2708,"kali_year":5086,"ayanamsa_lahiri":23.6451,"grahas":{"sun":{"sidereal_longitude":300.6384760000001,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":219.66937600000006,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"retrograde":false,"latitude":-0.3732},"mars":{"sidereal_longitude":344.289476,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":296.02587600000004,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":278.7180760000001,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":345.778876,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":213.68117600000005,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":33.0669,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":213.0669,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":16,"name":"Viśākhā","pada":4},"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":1985,"month":2,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2446109.770833,"kali_year":5086,"ahargana":1857644.2708,"sun":{"sidereal_longitude":300.7639,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":217.8292,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":24,"name":"Navamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Navamī","elongation_degrees":277.0653,"elapsed_within_tithi_degrees":1.0653},"nakshatra":{"number":17,"name":"Anurādhā","pada":2,"moon_longitude":217.8292,"elapsed_within_degrees":4.4959},"yoga":{"number":12,"name":"Dhruva","sum_longitude":158.5931},"karana":{"half_tithi_index":46,"name":"Taitila"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.373,"elongation":82.935},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.373,"opposition_distance":97.065}},"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":"07:15","sunsetLocal":"18:11","solarNoonLocal":"12:43","dayLengthHours":10.928681635393005,"dayLengthDisplay":"10 Hours 55 Mins 43 Secs","nightLengthDisplay":"13 Hours 04 Mins 17 Secs","moonriseLocal":"02:14","moonsetLocal":"12:24","rahuKala":{"name":"Rāhu Kāla","start":"12:43","end":"14:05","startHours":12.714925421010367,"endHours":14.081010625434491,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"08:37","end":"09:59","startHours":8.616669807737988,"endHours":9.982755012162116,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"11:21","end":"12:43","startHours":11.34884021658624,"endHours":12.714925421010367,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:48","end":"10:10","startHours":9.800610318238899,"endHours":10.164899706085333,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:42","end":"08:00","startHours":7.7059463381219055,"endHours":7.9973778483990525,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:21","end":"13:05","startHours":12.350636033163934,"endHours":13.0792148088568,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:48","end":"06:31","startHours":5.79342705192813,"endHours":6.522005827620997,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:20","end":"07:15","startHours":6.33986113369778,"endHours":7.250584603313864,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:32","end":"15:16","startHours":14.536372360242535,"endHours":15.264951135935402,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:59","end":"18:23","startHours":17.97926623870687,"endHours":18.37926623870687,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:11","end":"18:38","startHours":18.17926623870687,"endHours":18.63462797351491,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:56","end":"19:41","startHours":17.92926623870687,"endHours":19.67926623870687,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:21","end":"01:05","startHours":24.350636033163934,"endHours":25.0792148088568,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"07:15","end":"08:37","startHours":7.250584603313864,"endHours":8.616669807737988,"quality":"auspicious"},{"name":"Amṛta","start":"08:37","end":"09:59","startHours":8.616669807737988,"endHours":9.982755012162116,"quality":"auspicious"},{"name":"Kāla","start":"09:59","end":"11:21","startHours":9.982755012162116,"endHours":11.34884021658624,"quality":"inauspicious"},{"name":"Śubha","start":"11:21","end":"12:43","startHours":11.34884021658624,"endHours":12.714925421010367,"quality":"auspicious"},{"name":"Roga","start":"12:43","end":"14:05","startHours":12.714925421010367,"endHours":14.081010625434491,"quality":"inauspicious"},{"name":"Udveg","start":"14:05","end":"15:27","startHours":14.081010625434491,"endHours":15.447095829858618,"quality":"inauspicious"},{"name":"Chala","start":"15:27","end":"16:49","startHours":15.447095829858618,"endHours":16.813181034282742,"quality":"neutral"},{"name":"Labha","start":"16:49","end":"18:11","startHours":16.813181034282742,"endHours":18.17926623870687,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"18:11","end":"19:49","startHours":18.17926623870687,"endHours":19.813181034282742,"quality":"inauspicious"},{"name":"Chala","start":"19:49","end":"21:27","startHours":19.813181034282742,"endHours":21.44709582985862,"quality":"neutral"},{"name":"Labha","start":"21:27","end":"23:05","startHours":21.44709582985862,"endHours":23.081010625434494,"quality":"auspicious"},{"name":"Amṛta","start":"23:05","end":"00:43","startHours":23.081010625434494,"endHours":24.714925421010367,"quality":"auspicious"},{"name":"Kāla","start":"00:43","end":"02:21","startHours":24.714925421010367,"endHours":26.34884021658624,"quality":"inauspicious"},{"name":"Śubha","start":"02:21","end":"03:59","startHours":26.34884021658624,"endHours":27.982755012162116,"quality":"auspicious"},{"name":"Roga","start":"03:59","end":"05:37","startHours":27.982755012162116,"endHours":29.616669807737992,"quality":"inauspicious"},{"name":"Udveg","start":"05:37","end":"07:15","startHours":29.616669807737992,"endHours":31.250584603313865,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:15","end":"08:15","startHours":7.250584603313864,"endHours":8.250584603313865,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"08:15","end":"09:15","startHours":8.250584603313865,"endHours":9.250584603313865,"planetary_lord":"Venus"},{"name":"Hora 3","start":"09:15","end":"10:15","startHours":9.250584603313865,"endHours":10.250584603313865,"planetary_lord":"Sun"},{"name":"Hora 4","start":"10:15","end":"11:15","startHours":10.250584603313865,"endHours":11.250584603313865,"planetary_lord":"Mars"},{"name":"Hora 5","start":"11:15","end":"12:15","startHours":11.250584603313865,"endHours":12.250584603313865,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"12:15","end":"13:15","startHours":12.250584603313865,"endHours":13.250584603313865,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"13:15","end":"14:15","startHours":13.250584603313865,"endHours":14.250584603313865,"planetary_lord":"Moon"},{"name":"Hora 8","start":"14:15","end":"15:15","startHours":14.250584603313865,"endHours":15.250584603313865,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"15:15","end":"16:15","startHours":15.250584603313865,"endHours":16.250584603313865,"planetary_lord":"Venus"},{"name":"Hora 10","start":"16:15","end":"17:15","startHours":16.250584603313865,"endHours":17.250584603313865,"planetary_lord":"Sun"},{"name":"Hora 11","start":"17:15","end":"18:15","startHours":17.250584603313865,"endHours":18.250584603313865,"planetary_lord":"Mars"},{"name":"Hora 12","start":"18:15","end":"19:15","startHours":18.250584603313865,"endHours":19.250584603313865,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"19:15","end":"20:15","startHours":19.250584603313865,"endHours":20.250584603313865,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"20:15","end":"21:15","startHours":20.250584603313865,"endHours":21.250584603313865,"planetary_lord":"Moon"},{"name":"Hora 15","start":"21:15","end":"22:15","startHours":21.250584603313865,"endHours":22.250584603313865,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"22:15","end":"23:15","startHours":22.250584603313865,"endHours":23.250584603313865,"planetary_lord":"Venus"},{"name":"Hora 17","start":"23:15","end":"00:15","startHours":23.250584603313865,"endHours":24.250584603313865,"planetary_lord":"Sun"},{"name":"Hora 18","start":"00:15","end":"01:15","startHours":24.250584603313865,"endHours":25.250584603313865,"planetary_lord":"Mars"},{"name":"Hora 19","start":"01:15","end":"02:15","startHours":25.250584603313865,"endHours":26.250584603313865,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"02:15","end":"03:15","startHours":26.250584603313865,"endHours":27.250584603313865,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"03:15","end":"04:15","startHours":27.250584603313865,"endHours":28.250584603313865,"planetary_lord":"Moon"},{"name":"Hora 22","start":"04:15","end":"05:15","startHours":28.250584603313865,"endHours":29.250584603313865,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"05:15","end":"06:15","startHours":29.250584603313865,"endHours":30.250584603313865,"planetary_lord":"Venus"},{"name":"Hora 24","start":"06:15","end":"07:15","startHours":30.250584603313865,"endHours":31.250584603313865,"planetary_lord":"Sun"}],"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":"North (Uttara)","chandraVasa":"North-East","rahuVasa":"South-West","anandadiYoga":{"name":"Ānanda","quality":"Auspicious"},"tropicalRitu":"Śiśira (Winter)","vedicRitu":"Śiśira (Winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-13.42579665306768,"eotMinutes":-14.599525260622107,"ayanamsa":23.6451}},"calendars":{"vikram_samvat":2042,"vikram_samvatsara":"Bahudhānya","saka_samvat":1907,"saka_samvatsara":"Krodhana","bengali_samvat":1392,"malayalam_era":1161,"nanakshahi_year":516,"lunar_month":"Phālguna","lunar_month_paksha_full":"Phālguna Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Phālguna","lunar_month_amanta":"Māgha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Kumbha (Māsi)","ritu":"Śiśira (Winter)","display_summary":"Phālguna Kṛṣṇa Navamī · Vikram 2042 Bahudhānya · Śaka 1907 Krodhana"},"festivals":[],"todays_walk":{"walk":{"id":"budha-walk","name":"Budha Walk","name_sanskrit":"बुध यात्रा","type":"graha","description":"Discrimination + BG 2.41 (vyavasāyātmikā buddhi).","step_count":6,"url":"/walk/budha-walk"},"reason":"Budhavāra (Wednesday) — 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 13, 1985 CE · Phoenix, USA · Vidhyamitra","description":"February 13, 1985 CE for Phoenix, USA: Kṛṣṇa Navamī, sūryodaya 07:15, sūryāsta 18:11.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/phoenix/1985-02-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/phoenix/1985-02-13","sa":"https://sa.vidhyamitra.com/city/phoenix/1985-02-13","hi":"https://hi.vidhyamitra.com/city/phoenix/1985-02-13","x-default":"https://vidhyamitra.com/city/phoenix/1985-02-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T04:56:34.611Z","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":"2026-06-01T04:56:34.611Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T04:56:34.611Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}