{"id":"vidhyamitra:city-day:phoenix:1998-01-16:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/phoenix/1998-01-16","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1998-01-16","date_display":"January 16, 1998 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":1998,"month":1,"day":16,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450829.770833,"kali_year":5099,"ahargana":1862364.2708,"sun":{"sidereal_longitude":271.7735,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":132.34,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":220.5666,"elapsed_within_tithi_degrees":4.5666},"nakshatra":{"number":10,"name":"Maghā","pada":4,"moon_longitude":132.34,"elapsed_within_degrees":12.34},"yoga":{"number":4,"name":"Saubhāgya","sum_longitude":44.1135},"karana":{"half_tithi_index":36,"name":"Bava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"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":1998,"month":1,"day":16,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2450829.770833,"ahargana":1862364.2708,"kali_year":5099,"ayanamsa_lahiri":23.8256,"grahas":{"sun":{"sidereal_longitude":271.87273700000003,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":129.94993699999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":false,"latitude":-0.8299},"mars":{"sidereal_longitude":298.816237,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":250.47423700000002,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":301.67013700000007,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":272.49273700000003,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":true},"saturn":{"sidereal_longitude":350.526837,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":142.9786,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":322.9786,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","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":1998,"month":1,"day":16,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450829.770833,"kali_year":5099,"ahargana":1862364.2708,"sun":{"sidereal_longitude":271.7735,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":132.34,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":220.5666,"elapsed_within_tithi_degrees":4.5666},"nakshatra":{"number":10,"name":"Maghā","pada":4,"moon_longitude":132.34,"elapsed_within_degrees":12.34},"yoga":{"number":4,"name":"Saubhāgya","sum_longitude":44.1135},"karana":{"half_tithi_index":36,"name":"Bava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.83,"elongation":139.433},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.83,"opposition_distance":40.567}},"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":"07:32","sunsetLocal":"17:44","solarNoonLocal":"12:38","dayLengthHours":10.188305143784632,"dayLengthDisplay":"10 Hours 11 Mins 18 Secs","nightLengthDisplay":"13 Hours 48 Mins 42 Secs","moonriseLocal":"20:40","moonsetLocal":"09:40","rahuKala":{"name":"Rāhu Kāla","start":"11:22","end":"12:38","startHours":11.359610216056549,"endHours":12.633148359029626,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:11","end":"16:27","startHours":15.180224644975784,"endHours":16.453762787948865,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:49","end":"10:05","startHours":8.81253393011039,"endHours":10.086072073083468,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:55","end":"10:15","startHours":9.916266987353724,"endHours":10.255877158813213,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:58","end":"08:14","startHours":7.96350850146167,"endHours":8.23519663862926,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:18","end":"12:58","startHours":12.293538187570139,"endHours":12.972758530489113,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"06:11","end":"06:52","startHours":6.18055510129936,"endHours":6.859775444218335,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:41","end":"07:32","startHours":6.6899703584885915,"endHours":7.538995787137311,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:20","end":"15:01","startHours":14.331199216327065,"endHours":15.01041955924604,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:32","end":"17:56","startHours":17.527300930921943,"endHours":17.92730093092194,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:44","end":"18:09","startHours":17.727300930921942,"endHours":18.1518136452463,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:29","end":"19:14","startHours":17.477300930921942,"endHours":19.227300930921942,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:18","end":"00:58","startHours":24.29353818757014,"endHours":24.972758530489113,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"07:32","end":"08:49","startHours":7.538995787137311,"endHours":8.81253393011039,"quality":"neutral"},{"name":"Labha","start":"08:49","end":"10:05","startHours":8.81253393011039,"endHours":10.086072073083468,"quality":"auspicious"},{"name":"Amṛta","start":"10:05","end":"11:22","startHours":10.086072073083468,"endHours":11.359610216056549,"quality":"auspicious"},{"name":"Kāla","start":"11:22","end":"12:38","startHours":11.359610216056549,"endHours":12.633148359029626,"quality":"inauspicious"},{"name":"Śubha","start":"12:38","end":"13:54","startHours":12.633148359029626,"endHours":13.906686502002707,"quality":"auspicious"},{"name":"Roga","start":"13:54","end":"15:11","startHours":13.906686502002707,"endHours":15.180224644975784,"quality":"inauspicious"},{"name":"Udveg","start":"15:11","end":"16:27","startHours":15.180224644975784,"endHours":16.453762787948865,"quality":"inauspicious"},{"name":"Chala","start":"16:27","end":"17:44","startHours":16.453762787948865,"endHours":17.727300930921942,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"17:44","end":"19:27","startHours":17.727300930921942,"endHours":19.45376278794886,"quality":"inauspicious"},{"name":"Udveg","start":"19:27","end":"21:11","startHours":19.45376278794886,"endHours":21.180224644975784,"quality":"inauspicious"},{"name":"Chala","start":"21:11","end":"22:54","startHours":21.180224644975784,"endHours":22.906686502002707,"quality":"neutral"},{"name":"Labha","start":"22:54","end":"00:38","startHours":22.906686502002707,"endHours":24.633148359029626,"quality":"auspicious"},{"name":"Amṛta","start":"00:38","end":"02:22","startHours":24.633148359029626,"endHours":26.359610216056545,"quality":"auspicious"},{"name":"Kāla","start":"02:22","end":"04:05","startHours":26.359610216056545,"endHours":28.086072073083468,"quality":"inauspicious"},{"name":"Śubha","start":"04:05","end":"05:49","startHours":28.086072073083468,"endHours":29.81253393011039,"quality":"auspicious"},{"name":"Roga","start":"05:49","end":"07:32","startHours":29.81253393011039,"endHours":31.53899578713731,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:32","end":"08:32","startHours":7.538995787137311,"endHours":8.53899578713731,"planetary_lord":"Venus"},{"name":"Hora 2","start":"08:32","end":"09:32","startHours":8.53899578713731,"endHours":9.53899578713731,"planetary_lord":"Sun"},{"name":"Hora 3","start":"09:32","end":"10:32","startHours":9.53899578713731,"endHours":10.53899578713731,"planetary_lord":"Mars"},{"name":"Hora 4","start":"10:32","end":"11:32","startHours":10.53899578713731,"endHours":11.53899578713731,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"11:32","end":"12:32","startHours":11.53899578713731,"endHours":12.53899578713731,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"12:32","end":"13:32","startHours":12.53899578713731,"endHours":13.53899578713731,"planetary_lord":"Moon"},{"name":"Hora 7","start":"13:32","end":"14:32","startHours":13.53899578713731,"endHours":14.53899578713731,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"14:32","end":"15:32","startHours":14.53899578713731,"endHours":15.53899578713731,"planetary_lord":"Venus"},{"name":"Hora 9","start":"15:32","end":"16:32","startHours":15.53899578713731,"endHours":16.53899578713731,"planetary_lord":"Sun"},{"name":"Hora 10","start":"16:32","end":"17:32","startHours":16.53899578713731,"endHours":17.53899578713731,"planetary_lord":"Mars"},{"name":"Hora 11","start":"17:32","end":"18:32","startHours":17.53899578713731,"endHours":18.53899578713731,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"18:32","end":"19:32","startHours":18.53899578713731,"endHours":19.53899578713731,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"19:32","end":"20:32","startHours":19.53899578713731,"endHours":20.53899578713731,"planetary_lord":"Moon"},{"name":"Hora 14","start":"20:32","end":"21:32","startHours":20.53899578713731,"endHours":21.53899578713731,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"21:32","end":"22:32","startHours":21.53899578713731,"endHours":22.53899578713731,"planetary_lord":"Venus"},{"name":"Hora 16","start":"22:32","end":"23:32","startHours":22.53899578713731,"endHours":23.53899578713731,"planetary_lord":"Sun"},{"name":"Hora 17","start":"23:32","end":"00:32","startHours":23.53899578713731,"endHours":24.53899578713731,"planetary_lord":"Mars"},{"name":"Hora 18","start":"00:32","end":"01:32","startHours":24.53899578713731,"endHours":25.53899578713731,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"01:32","end":"02:32","startHours":25.53899578713731,"endHours":26.53899578713731,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"02:32","end":"03:32","startHours":26.53899578713731,"endHours":27.53899578713731,"planetary_lord":"Moon"},{"name":"Hora 21","start":"03:32","end":"04:32","startHours":27.53899578713731,"endHours":28.53899578713731,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"04:32","end":"05:32","startHours":28.53899578713731,"endHours":29.53899578713731,"planetary_lord":"Venus"},{"name":"Hora 23","start":"05:32","end":"06:32","startHours":29.53899578713731,"endHours":30.53899578713731,"planetary_lord":"Sun"},{"name":"Hora 24","start":"06:32","end":"07:32","startHours":30.53899578713731,"endHours":31.53899578713731,"planetary_lord":"Mars"}],"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","Siṃha","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Kanyā","Vṛścika","Dhanu","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"West","rahuVasa":"South-East","anandadiYoga":{"name":"Kāladaṇḍa","quality":"Inauspicious"},"tropicalRitu":"Hemanta (Pre-winter)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-21.00151208733633,"eotMinutes":-9.692901541777706,"ayanamsa":23.8256}},"calendars":{"vikram_samvat":2055,"vikram_samvatsara":"Khara","saka_samvat":1920,"saka_samvatsara":"Bahudhānya","bengali_samvat":1405,"malayalam_era":1174,"nanakshahi_year":529,"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 Caturthī · Vikram 2055 Khara · Śaka 1920 Bahudhānya"},"festivals":[{"id":"sankashti-chaturthi","name":"Saṅkaṣṭī Caturthī","name_sanskrit":"सङ्कष्टी चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Gaṇeśa vrata.","vrata":true,"detection":{"tithi_number":19,"tithi_paksha":"Kṛṣṇa"},"precedence":6}],"todays_walk":{"walk":{"id":"shukra-walk","name":"Śukra Walk","name_sanskrit":"शुक्र यात्रा","type":"graha","description":"Beauty + creativity in dharma + BG 10.36.","step_count":5,"url":"/walk/shukra-walk"},"reason":"Śukravāra (Friday) — 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 January 16, 1998 CE · Phoenix, USA · Vidhyamitra","description":"January 16, 1998 CE for Phoenix, USA: Kṛṣṇa Caturthī, sūryodaya 07:32, sūryāsta 17:44.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/phoenix/1998-01-16","hreflang_alternates":{"en":"https://vidhyamitra.com/city/phoenix/1998-01-16","sa":"https://sa.vidhyamitra.com/city/phoenix/1998-01-16","hi":"https://hi.vidhyamitra.com/city/phoenix/1998-01-16","x-default":"https://vidhyamitra.com/city/phoenix/1998-01-16"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T06:08:48.220Z","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":"2026-05-31T06:08:48.220Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T06:08:48.220Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}