{"id":"vidhyamitra:city-day:phoenix:1998-01-15:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/phoenix/1998-01-15","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1998-01-15","date_display":"January 15, 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":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450828.770833,"kali_year":5099,"ahargana":1862363.2708,"sun":{"sidereal_longitude":270.7467,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":119.9296,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":18,"name":"Tṛtīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Tṛtīyā","elongation_degrees":209.1829,"elapsed_within_tithi_degrees":5.1829},"nakshatra":{"number":9,"name":"Āśleṣā","pada":4,"moon_longitude":119.9296,"elapsed_within_degrees":13.2629},"yoga":{"number":3,"name":"Āyuṣmān","sum_longitude":30.6763},"karana":{"half_tithi_index":34,"name":"Vaṇija"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"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":15,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2450828.770833,"ahargana":1862363.2708,"kali_year":5099,"ayanamsa_lahiri":23.8256,"grahas":{"sun":{"sidereal_longitude":270.854276,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":117.71347600000001,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":4},"retrograde":false,"latitude":-1.7641},"mars":{"sidereal_longitude":298.02707599999997,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":249.15077600000006,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":301.4462759999999,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":273.1119759999999,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":true},"saturn":{"sidereal_longitude":350.473176,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":143.0316,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":323.0316,"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":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450828.770833,"kali_year":5099,"ahargana":1862363.2708,"sun":{"sidereal_longitude":270.7467,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":119.9296,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":18,"name":"Tṛtīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Tṛtīyā","elongation_degrees":209.1829,"elapsed_within_tithi_degrees":5.1829},"nakshatra":{"number":9,"name":"Āśleṣā","pada":4,"moon_longitude":119.9296,"elapsed_within_degrees":13.2629},"yoga":{"number":3,"name":"Āyuṣmān","sum_longitude":30.6763},"karana":{"half_tithi_index":34,"name":"Vaṇija"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-1.764,"elongation":150.817},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-1.764,"opposition_distance":29.183}},"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":"07:33","sunsetLocal":"17:43","solarNoonLocal":"12:38","dayLengthHours":10.169246359144282,"dayLengthDisplay":"10 Hours 10 Mins 09 Secs","nightLengthDisplay":"13 Hours 49 Mins 51 Secs","moonriseLocal":"19:43","moonsetLocal":"09:07","rahuKala":{"name":"Rāhu Kāla","start":"13:54","end":"15:10","startHours":13.898588285661923,"endHours":15.169744080554956,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:33","end":"08:49","startHours":7.542809311196746,"endHours":8.813965106089782,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:05","end":"11:21","startHours":10.085120900982815,"endHours":11.356276695875852,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:55","end":"10:15","startHours":9.915633461663745,"endHours":10.254608340301887,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:58","end":"08:14","startHours":7.966527909494424,"endHours":8.237707812404938,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:17","end":"12:58","startHours":12.288457612130744,"endHours":12.966407369407028,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"06:11","end":"06:52","startHours":6.186909796644175,"endHours":6.864859553920461,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:42","end":"07:33","startHours":6.695372114601389,"endHours":7.542809311196746,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:19","end":"15:00","startHours":14.322306883959602,"endHours":15.000256641235888,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:31","end":"17:55","startHours":17.512055670341027,"endHours":17.912055670341026,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:43","end":"18:08","startHours":17.712055670341027,"endHours":18.135774268638706,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:28","end":"19:13","startHours":17.462055670341027,"endHours":19.212055670341027,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:17","end":"00:58","startHours":24.288457612130742,"endHours":24.96640736940703,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"07:33","end":"08:49","startHours":7.542809311196746,"endHours":8.813965106089782,"quality":"auspicious"},{"name":"Roga","start":"08:49","end":"10:05","startHours":8.813965106089782,"endHours":10.085120900982815,"quality":"inauspicious"},{"name":"Udveg","start":"10:05","end":"11:21","startHours":10.085120900982815,"endHours":11.356276695875852,"quality":"inauspicious"},{"name":"Chala","start":"11:21","end":"12:38","startHours":11.356276695875852,"endHours":12.627432490768886,"quality":"neutral"},{"name":"Labha","start":"12:38","end":"13:54","startHours":12.627432490768886,"endHours":13.898588285661923,"quality":"auspicious"},{"name":"Amṛta","start":"13:54","end":"15:10","startHours":13.898588285661923,"endHours":15.169744080554956,"quality":"auspicious"},{"name":"Kāla","start":"15:10","end":"16:26","startHours":15.169744080554956,"endHours":16.440899875447993,"quality":"inauspicious"},{"name":"Śubha","start":"16:26","end":"17:43","startHours":16.440899875447993,"endHours":17.712055670341027,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"17:43","end":"19:26","startHours":17.712055670341027,"endHours":19.44089987544799,"quality":"auspicious"},{"name":"Kāla","start":"19:26","end":"21:10","startHours":19.44089987544799,"endHours":21.169744080554956,"quality":"inauspicious"},{"name":"Śubha","start":"21:10","end":"22:54","startHours":21.169744080554956,"endHours":22.898588285661923,"quality":"auspicious"},{"name":"Roga","start":"22:54","end":"00:38","startHours":22.898588285661923,"endHours":24.627432490768886,"quality":"inauspicious"},{"name":"Udveg","start":"00:38","end":"02:21","startHours":24.627432490768886,"endHours":26.35627669587585,"quality":"inauspicious"},{"name":"Chala","start":"02:21","end":"04:05","startHours":26.35627669587585,"endHours":28.085120900982815,"quality":"neutral"},{"name":"Labha","start":"04:05","end":"05:49","startHours":28.085120900982815,"endHours":29.813965106089782,"quality":"auspicious"},{"name":"Amṛta","start":"05:49","end":"07:33","startHours":29.813965106089782,"endHours":31.542809311196745,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:33","end":"08:33","startHours":7.542809311196746,"endHours":8.542809311196745,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"08:33","end":"09:33","startHours":8.542809311196745,"endHours":9.542809311196745,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"09:33","end":"10:33","startHours":9.542809311196745,"endHours":10.542809311196745,"planetary_lord":"Moon"},{"name":"Hora 4","start":"10:33","end":"11:33","startHours":10.542809311196745,"endHours":11.542809311196745,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"11:33","end":"12:33","startHours":11.542809311196745,"endHours":12.542809311196745,"planetary_lord":"Venus"},{"name":"Hora 6","start":"12:33","end":"13:33","startHours":12.542809311196745,"endHours":13.542809311196745,"planetary_lord":"Sun"},{"name":"Hora 7","start":"13:33","end":"14:33","startHours":13.542809311196745,"endHours":14.542809311196745,"planetary_lord":"Mars"},{"name":"Hora 8","start":"14:33","end":"15:33","startHours":14.542809311196745,"endHours":15.542809311196745,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"15:33","end":"16:33","startHours":15.542809311196745,"endHours":16.542809311196745,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"16:33","end":"17:33","startHours":16.542809311196745,"endHours":17.542809311196745,"planetary_lord":"Moon"},{"name":"Hora 11","start":"17:33","end":"18:33","startHours":17.542809311196745,"endHours":18.542809311196745,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"18:33","end":"19:33","startHours":18.542809311196745,"endHours":19.542809311196745,"planetary_lord":"Venus"},{"name":"Hora 13","start":"19:33","end":"20:33","startHours":19.542809311196745,"endHours":20.542809311196745,"planetary_lord":"Sun"},{"name":"Hora 14","start":"20:33","end":"21:33","startHours":20.542809311196745,"endHours":21.542809311196745,"planetary_lord":"Mars"},{"name":"Hora 15","start":"21:33","end":"22:33","startHours":21.542809311196745,"endHours":22.542809311196745,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"22:33","end":"23:33","startHours":22.542809311196745,"endHours":23.542809311196745,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"23:33","end":"00:33","startHours":23.542809311196745,"endHours":24.542809311196745,"planetary_lord":"Moon"},{"name":"Hora 18","start":"00:33","end":"01:33","startHours":24.542809311196745,"endHours":25.542809311196745,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"01:33","end":"02:33","startHours":25.542809311196745,"endHours":26.542809311196745,"planetary_lord":"Venus"},{"name":"Hora 20","start":"02:33","end":"03:33","startHours":26.542809311196745,"endHours":27.542809311196745,"planetary_lord":"Sun"},{"name":"Hora 21","start":"03:33","end":"04:33","startHours":27.542809311196745,"endHours":28.542809311196745,"planetary_lord":"Mars"},{"name":"Hora 22","start":"04:33","end":"05:33","startHours":28.542809311196745,"endHours":29.542809311196745,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"05:33","end":"06:33","startHours":29.542809311196745,"endHours":30.542809311196745,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"06:33","end":"07:33","startHours":30.542809311196745,"endHours":31.542809311196745,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"unfavorable_nakshatras":["Ārdrā","Punarvasu","Puṣya","Aśleṣā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Vṛṣabha","Karka","Kanyā","Dhanu","Makara"],"unfavorable_rashis":["Mithuna","Siṃha","Tulā","Vṛścika","Kumbha","Mīna"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"South-West","rahuVasa":"North-West","anandadiYoga":{"name":"Rākṣasa","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":-21.186294693008957,"eotMinutes":-9.349949446133257,"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 Tṛtīyā · Vikram 2055 Khara · Śaka 1920 Bahudhānya"},"festivals":[],"todays_walk":{"walk":{"id":"guru-walk","name":"Bṛhaspati Walk","name_sanskrit":"गुरु यात्रा","type":"graha","description":"Wisdom transmission + BG 4.34.","step_count":8,"url":"/walk/guru-walk"},"reason":"Guruvāra (Thursday) — 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 15, 1998 CE · Phoenix, USA · Vidhyamitra","description":"January 15, 1998 CE for Phoenix, USA: Kṛṣṇa Tṛtīyā, sūryodaya 07:33, sūryāsta 17:43.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/phoenix/1998-01-15","hreflang_alternates":{"en":"https://vidhyamitra.com/city/phoenix/1998-01-15","sa":"https://sa.vidhyamitra.com/city/phoenix/1998-01-15","hi":"https://hi.vidhyamitra.com/city/phoenix/1998-01-15","x-default":"https://vidhyamitra.com/city/phoenix/1998-01-15"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T12:07:46.599Z","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":"2026-05-31T12:07:46.599Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T12:07:46.599Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}