{"id":"vidhyamitra:city-day:perth:2023-02-03:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2023-02-03","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2023-02-03","date_display":"February 3, 2023 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":2023,"month":2,"day":3,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2459978.770833,"kali_year":5124,"ahargana":1871513.2708,"sun":{"sidereal_longitude":289.7292,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":78.883,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":149.1537,"elapsed_within_tithi_degrees":5.1537},"nakshatra":{"number":6,"name":"Ārdrā","pada":4,"moon_longitude":78.883,"elapsed_within_degrees":12.2163},"yoga":{"number":1,"name":"Viṣkambha","sum_longitude":8.6122},"karana":{"half_tithi_index":24,"name":"Kaulava"},"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":2023,"month":2,"day":3,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2459978.770833,"ahargana":1871513.2708,"kali_year":5124,"ayanamsa_lahiri":24.1756,"grahas":{"sun":{"sidereal_longitude":289.75587799999994,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"moon":{"sidereal_longitude":80.03037799999998,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":1},"retrograde":false,"latitude":3.9219},"mars":{"sidereal_longitude":46.26867800000002,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":264.7136780000001,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":342.284178,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":314.14627799999994,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":301.99907800000005,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":18.2206,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":198.2206,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","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":2023,"month":2,"day":3,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2459978.770833,"kali_year":5124,"ahargana":1871513.2708,"sun":{"sidereal_longitude":289.7292,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":78.883,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":149.1537,"elapsed_within_tithi_degrees":5.1537},"nakshatra":{"number":6,"name":"Ārdrā","pada":4,"moon_longitude":78.883,"elapsed_within_degrees":12.2163},"yoga":{"number":1,"name":"Viṣkambha","sum_longitude":8.6122},"karana":{"half_tithi_index":24,"name":"Kaulava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.922,"elongation":149.154},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.922,"opposition_distance":30.846}},"eclipse_window_40days":[]},"city":{"slug":"perth","name":"Perth, Australia","lat":-31.9505,"lon":115.8605,"tz_offset_hours":8,"country":"AU","tier":"diaspora"},"tier2":{"city":{"slug":"perth","name":"Perth, Australia","lat":-31.9505,"lon":115.8605,"tz_offset_hours":8,"country":"AU","tier":"diaspora"},"sunriseLocal":"05:43","sunsetLocal":"19:18","solarNoonLocal":"12:31","dayLengthHours":13.572084646570012,"dayLengthDisplay":"13 Hours 34 Mins 20 Secs","nightLengthDisplay":"10 Hours 25 Mins 40 Secs","moonriseLocal":"17:29","moonsetLocal":"03:34","rahuKala":{"name":"Rāhu Kāla","start":"10:49","end":"12:31","startHours":10.812297458326249,"endHours":12.5088080391475,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:54","end":"17:36","startHours":15.901829200790003,"endHours":17.598339781611255,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:25","end":"09:07","startHours":7.419276296683745,"endHours":9.115786877504997,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:53","end":"09:21","startHours":8.88958546672883,"endHours":9.341988288281163,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:17","end":"06:39","startHours":6.288269242802911,"endHours":6.6501915000447775,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:03","end":"12:58","startHours":12.056405217595167,"endHours":12.961210860699833,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:55","end":"04:49","startHours":3.913154429653159,"endHours":4.817960072757826,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:36","end":"05:43","startHours":4.591758661981659,"endHours":5.722765715862494,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:46","end":"15:41","startHours":14.770822146909168,"endHours":15.675627790013836,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:06","end":"19:30","startHours":19.094850362432506,"endHours":19.494850362432505,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:18","end":"19:52","startHours":19.294850362432506,"endHours":19.860353889372924,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:03","end":"20:48","startHours":19.044850362432506,"endHours":20.794850362432506,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:03","end":"00:58","startHours":24.056405217595167,"endHours":24.961210860699833,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"05:43","end":"07:25","startHours":5.722765715862494,"endHours":7.419276296683745,"quality":"neutral"},{"name":"Labha","start":"07:25","end":"09:07","startHours":7.419276296683745,"endHours":9.115786877504997,"quality":"auspicious"},{"name":"Amṛta","start":"09:07","end":"10:49","startHours":9.115786877504997,"endHours":10.812297458326249,"quality":"auspicious"},{"name":"Kāla","start":"10:49","end":"12:31","startHours":10.812297458326249,"endHours":12.5088080391475,"quality":"inauspicious"},{"name":"Śubha","start":"12:31","end":"14:12","startHours":12.5088080391475,"endHours":14.20531861996875,"quality":"auspicious"},{"name":"Roga","start":"14:12","end":"15:54","startHours":14.20531861996875,"endHours":15.901829200790003,"quality":"inauspicious"},{"name":"Udveg","start":"15:54","end":"17:36","startHours":15.901829200790003,"endHours":17.598339781611255,"quality":"inauspicious"},{"name":"Chala","start":"17:36","end":"19:18","startHours":17.598339781611255,"endHours":19.294850362432506,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"19:18","end":"20:36","startHours":19.294850362432506,"endHours":20.598339781611255,"quality":"inauspicious"},{"name":"Udveg","start":"20:36","end":"21:54","startHours":20.598339781611255,"endHours":21.901829200790004,"quality":"inauspicious"},{"name":"Chala","start":"21:54","end":"23:12","startHours":21.901829200790004,"endHours":23.20531861996875,"quality":"neutral"},{"name":"Labha","start":"23:12","end":"00:31","startHours":23.20531861996875,"endHours":24.5088080391475,"quality":"auspicious"},{"name":"Amṛta","start":"00:31","end":"01:49","startHours":24.5088080391475,"endHours":25.81229745832625,"quality":"auspicious"},{"name":"Kāla","start":"01:49","end":"03:07","startHours":25.81229745832625,"endHours":27.115786877504995,"quality":"inauspicious"},{"name":"Śubha","start":"03:07","end":"04:25","startHours":27.115786877504995,"endHours":28.419276296683744,"quality":"auspicious"},{"name":"Roga","start":"04:25","end":"05:43","startHours":28.419276296683744,"endHours":29.722765715862494,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:43","end":"06:43","startHours":5.722765715862494,"endHours":6.722765715862494,"planetary_lord":"Venus"},{"name":"Hora 2","start":"06:43","end":"07:43","startHours":6.722765715862494,"endHours":7.722765715862494,"planetary_lord":"Sun"},{"name":"Hora 3","start":"07:43","end":"08:43","startHours":7.722765715862494,"endHours":8.722765715862494,"planetary_lord":"Mars"},{"name":"Hora 4","start":"08:43","end":"09:43","startHours":8.722765715862494,"endHours":9.722765715862494,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"09:43","end":"10:43","startHours":9.722765715862494,"endHours":10.722765715862494,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"10:43","end":"11:43","startHours":10.722765715862494,"endHours":11.722765715862494,"planetary_lord":"Moon"},{"name":"Hora 7","start":"11:43","end":"12:43","startHours":11.722765715862494,"endHours":12.722765715862494,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"12:43","end":"13:43","startHours":12.722765715862494,"endHours":13.722765715862494,"planetary_lord":"Venus"},{"name":"Hora 9","start":"13:43","end":"14:43","startHours":13.722765715862494,"endHours":14.722765715862494,"planetary_lord":"Sun"},{"name":"Hora 10","start":"14:43","end":"15:43","startHours":14.722765715862494,"endHours":15.722765715862494,"planetary_lord":"Mars"},{"name":"Hora 11","start":"15:43","end":"16:43","startHours":15.722765715862494,"endHours":16.722765715862494,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"16:43","end":"17:43","startHours":16.722765715862494,"endHours":17.722765715862494,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"17:43","end":"18:43","startHours":17.722765715862494,"endHours":18.722765715862494,"planetary_lord":"Moon"},{"name":"Hora 14","start":"18:43","end":"19:43","startHours":18.722765715862494,"endHours":19.722765715862494,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"19:43","end":"20:43","startHours":19.722765715862494,"endHours":20.722765715862494,"planetary_lord":"Venus"},{"name":"Hora 16","start":"20:43","end":"21:43","startHours":20.722765715862494,"endHours":21.722765715862494,"planetary_lord":"Sun"},{"name":"Hora 17","start":"21:43","end":"22:43","startHours":21.722765715862494,"endHours":22.722765715862494,"planetary_lord":"Mars"},{"name":"Hora 18","start":"22:43","end":"23:43","startHours":22.722765715862494,"endHours":23.722765715862494,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"23:43","end":"00:43","startHours":23.722765715862494,"endHours":24.722765715862494,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"00:43","end":"01:43","startHours":24.722765715862494,"endHours":25.722765715862494,"planetary_lord":"Moon"},{"name":"Hora 21","start":"01:43","end":"02:43","startHours":25.722765715862494,"endHours":26.722765715862494,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"02:43","end":"03:43","startHours":26.722765715862494,"endHours":27.722765715862494,"planetary_lord":"Venus"},{"name":"Hora 23","start":"03:43","end":"04:43","startHours":27.722765715862494,"endHours":28.722765715862494,"planetary_lord":"Sun"},{"name":"Hora 24","start":"04:43","end":"05:43","startHours":28.722765715862494,"endHours":29.722765715862494,"planetary_lord":"Mars"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Punarvasu","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Uttara Phalgunī","Hasta","Citrā","Svātī","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Siṃha","Vṛścika","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Karka","Kanyā","Tulā","Makara","Kumbha"]},"dishaShool":"West (Paścim)","chandraVasa":"South","rahuVasa":"South-East","anandadiYoga":{"name":"Cara","quality":"Auspicious"},"drikRitu":"Śiśira (Winter) (Drik)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-16.64464496378941,"eotMinutes":-13.970482348849993,"ayanamsa":24.1756}},"calendars":{"vikram_samvat":2080,"vikram_samvatsara":"Nala","saka_samvat":1945,"saka_samvatsara":"Śobhana","bengali_samvat":1430,"malayalam_era":1199,"nanakshahi_year":554,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Trayodaśī · Vikram 2080 Nala · Śaka 1945 Śobhana"},"festivals":[{"id":"makara-sankranti","name":"Makara Saṅkrānti (Uttarāyaṇa)","name_sanskrit":"मकर सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Capricorn; Uttarāyaṇa (north-going) begins. Bhīṣma's chosen mahaprasthāna time.","vrata":true,"detection":{"sun_rashi":"Makara"},"precedence":1,"sources":["Mahābhārata Bhīṣma-Stuti","Sūrya-Siddhānta"]},{"id":"pongal","name":"Pongal / Thai Pongal","name_sanskrit":"पोङ्गल","tradition":"Regional","associated_deity":"Sūrya Bhagavān","significance":"Tamil 4-day harvest festival; coincides with Makara Saṅkrānti.","vrata":false,"detection":{"sun_rashi":"Makara"},"precedence":2},{"id":"pradosha-vrata","name":"Pradoṣa Vrata","name_sanskrit":"प्रदोष व्रत","tradition":"Shaiva","associated_deity":"Śiva","significance":"Twilight worship of Śiva on Trayodaśī.","vrata":true,"detection":{"any_of":[{"tithi_number":13},{"tithi_number":28}]},"precedence":7}],"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":"perth"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga February 3, 2023 CE · Perth, Australia · Vidhyamitra","description":"February 3, 2023 CE for Perth, Australia: Śukla Trayodaśī, sūryodaya 05:43, sūryāsta 19:18.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2023-02-03","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2023-02-03","sa":"https://sa.vidhyamitra.com/city/perth/2023-02-03","hi":"https://hi.vidhyamitra.com/city/perth/2023-02-03","x-default":"https://vidhyamitra.com/city/perth/2023-02-03"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-14T13:58:19.306Z","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":"2026-05-14T13:58:19.306Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-14T13:58:19.307Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}