{"id":"vidhyamitra:city-day:perth:2172-02-04:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2172-02-04","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2172-02-04","date_display":"February 4, 2172 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":2172,"month":2,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2514400.770833,"kali_year":5273,"ahargana":1925935.2708,"sun":{"sidereal_longitude":288.1411,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":40.3233,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":112.1821,"elapsed_within_tithi_degrees":4.1821},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1,"moon_longitude":40.3233,"elapsed_within_degrees":0.3233},"yoga":{"number":25,"name":"Brahma","sum_longitude":328.4644},"karana":{"half_tithi_index":18,"name":"Taitila"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"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":2172,"month":2,"day":4,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2514400.770833,"ahargana":1925935.2708,"kali_year":5273,"ayanamsa_lahiri":26.257,"grahas":{"sun":{"sidereal_longitude":288.525658,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"moon":{"sidereal_longitude":41.574858000000006,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1},"retrograde":false,"latitude":1.9457},"mars":{"sidereal_longitude":179.37045799999999,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":303.269758,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":199.34105799999998,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":4},"retrograde":false},"venus":{"sidereal_longitude":332.830458,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":319.06085800000005,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":14.6811,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":194.6811,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","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":2172,"month":2,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2514400.770833,"kali_year":5273,"ahargana":1925935.2708,"sun":{"sidereal_longitude":288.1411,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":40.3233,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":112.1821,"elapsed_within_tithi_degrees":4.1821},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1,"moon_longitude":40.3233,"elapsed_within_degrees":0.3233},"yoga":{"number":25,"name":"Brahma","sum_longitude":328.4644},"karana":{"half_tithi_index":18,"name":"Taitila"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":1.946,"elongation":112.182},"lunar":{"type":"lunar","occurs":false,"moon_latitude":1.946,"opposition_distance":67.818}},"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":"05:44","sunsetLocal":"19:17","solarNoonLocal":"12:31","dayLengthHours":13.549096907915096,"dayLengthDisplay":"13 Hours 32 Mins 57 Secs","nightLengthDisplay":"10 Hours 27 Mins 03 Secs","moonriseLocal":"14:57","moonsetLocal":"01:09","rahuKala":{"name":"Rāhu Kāla","start":"15:54","end":"17:36","startHours":15.898102966445329,"endHours":17.591740079934716,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:07","end":"10:49","startHours":9.123554512487782,"endHours":10.81719162597717,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:31","end":"14:12","startHours":12.510828739466557,"endHours":14.204465852955945,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:54","end":"09:21","startHours":8.897736230689198,"endHours":9.349372794286367,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:18","end":"06:40","startHours":6.300825990005471,"endHours":6.662135240883207,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:04","end":"12:58","startHours":12.059192175869386,"endHours":12.962465303063725,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:56","end":"04:50","startHours":3.929734031120329,"endHours":4.833007158314668,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:36","end":"05:44","startHours":4.6071888765160836,"endHours":5.736280285509008,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:46","end":"15:40","startHours":14.769011557452405,"endHours":15.672284684646744,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:05","end":"19:29","startHours":19.085377193424105,"endHours":19.485377193424103,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:17","end":"19:51","startHours":19.285377193424104,"endHours":19.849922897920568,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:02","end":"20:47","startHours":19.035377193424104,"endHours":20.785377193424104,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:04","end":"00:58","startHours":24.059192175869384,"endHours":24.962465303063723,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"05:44","end":"07:26","startHours":5.736280285509008,"endHours":7.429917398998395,"quality":"inauspicious"},{"name":"Udveg","start":"07:26","end":"09:07","startHours":7.429917398998395,"endHours":9.123554512487782,"quality":"inauspicious"},{"name":"Chala","start":"09:07","end":"10:49","startHours":9.123554512487782,"endHours":10.81719162597717,"quality":"neutral"},{"name":"Labha","start":"10:49","end":"12:31","startHours":10.81719162597717,"endHours":12.510828739466557,"quality":"auspicious"},{"name":"Amṛta","start":"12:31","end":"14:12","startHours":12.510828739466557,"endHours":14.204465852955945,"quality":"auspicious"},{"name":"Kāla","start":"14:12","end":"15:54","startHours":14.204465852955945,"endHours":15.898102966445329,"quality":"inauspicious"},{"name":"Śubha","start":"15:54","end":"17:36","startHours":15.898102966445329,"endHours":17.591740079934716,"quality":"auspicious"},{"name":"Roga","start":"17:36","end":"19:17","startHours":17.591740079934716,"endHours":19.285377193424104,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"19:17","end":"20:36","startHours":19.285377193424104,"endHours":20.591740079934716,"quality":"inauspicious"},{"name":"Śubha","start":"20:36","end":"21:54","startHours":20.591740079934716,"endHours":21.89810296644533,"quality":"auspicious"},{"name":"Roga","start":"21:54","end":"23:12","startHours":21.89810296644533,"endHours":23.20446585295594,"quality":"inauspicious"},{"name":"Udveg","start":"23:12","end":"00:31","startHours":23.20446585295594,"endHours":24.510828739466554,"quality":"inauspicious"},{"name":"Chala","start":"00:31","end":"01:49","startHours":24.510828739466554,"endHours":25.817191625977166,"quality":"neutral"},{"name":"Labha","start":"01:49","end":"03:07","startHours":25.817191625977166,"endHours":27.123554512487782,"quality":"auspicious"},{"name":"Amṛta","start":"03:07","end":"04:26","startHours":27.123554512487782,"endHours":28.429917398998395,"quality":"auspicious"},{"name":"Kāla","start":"04:26","end":"05:44","startHours":28.429917398998395,"endHours":29.736280285509007,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:44","end":"06:44","startHours":5.736280285509008,"endHours":6.736280285509008,"planetary_lord":"Mars"},{"name":"Hora 2","start":"06:44","end":"07:44","startHours":6.736280285509008,"endHours":7.736280285509008,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"07:44","end":"08:44","startHours":7.736280285509008,"endHours":8.736280285509007,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"08:44","end":"09:44","startHours":8.736280285509007,"endHours":9.736280285509007,"planetary_lord":"Moon"},{"name":"Hora 5","start":"09:44","end":"10:44","startHours":9.736280285509007,"endHours":10.736280285509007,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"10:44","end":"11:44","startHours":10.736280285509007,"endHours":11.736280285509007,"planetary_lord":"Venus"},{"name":"Hora 7","start":"11:44","end":"12:44","startHours":11.736280285509007,"endHours":12.736280285509007,"planetary_lord":"Sun"},{"name":"Hora 8","start":"12:44","end":"13:44","startHours":12.736280285509007,"endHours":13.736280285509007,"planetary_lord":"Mars"},{"name":"Hora 9","start":"13:44","end":"14:44","startHours":13.736280285509007,"endHours":14.736280285509007,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"14:44","end":"15:44","startHours":14.736280285509007,"endHours":15.736280285509007,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"15:44","end":"16:44","startHours":15.736280285509007,"endHours":16.736280285509007,"planetary_lord":"Moon"},{"name":"Hora 12","start":"16:44","end":"17:44","startHours":16.736280285509007,"endHours":17.736280285509007,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"17:44","end":"18:44","startHours":17.736280285509007,"endHours":18.736280285509007,"planetary_lord":"Venus"},{"name":"Hora 14","start":"18:44","end":"19:44","startHours":18.736280285509007,"endHours":19.736280285509007,"planetary_lord":"Sun"},{"name":"Hora 15","start":"19:44","end":"20:44","startHours":19.736280285509007,"endHours":20.736280285509007,"planetary_lord":"Mars"},{"name":"Hora 16","start":"20:44","end":"21:44","startHours":20.736280285509007,"endHours":21.736280285509007,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"21:44","end":"22:44","startHours":21.736280285509007,"endHours":22.736280285509007,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"22:44","end":"23:44","startHours":22.736280285509007,"endHours":23.736280285509007,"planetary_lord":"Moon"},{"name":"Hora 19","start":"23:44","end":"00:44","startHours":23.736280285509007,"endHours":24.736280285509007,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"00:44","end":"01:44","startHours":24.736280285509007,"endHours":25.736280285509007,"planetary_lord":"Venus"},{"name":"Hora 21","start":"01:44","end":"02:44","startHours":25.736280285509007,"endHours":26.736280285509007,"planetary_lord":"Sun"},{"name":"Hora 22","start":"02:44","end":"03:44","startHours":26.736280285509007,"endHours":27.736280285509007,"planetary_lord":"Mars"},{"name":"Hora 23","start":"03:44","end":"04:44","startHours":27.736280285509007,"endHours":28.736280285509007,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"04:44","end":"05:44","startHours":28.736280285509007,"endHours":29.736280285509007,"planetary_lord":"Saturn"}],"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":["Vṛṣabha","Karka","Tulā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Siṃha","Kanyā","Dhanu","Makara"]},"dishaShool":"North (Uttara)","chandraVasa":"South-East","rahuVasa":"North","anandadiYoga":{"name":"Maitra","quality":"Auspicious"},"tropicalRitu":"Śiśira (Winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-16.39777057446554,"eotMinutes":-14.091724367993354,"ayanamsa":26.257}},"calendars":{"vikram_samvat":2229,"vikram_samvatsara":"Pārthiva","saka_samvat":2094,"saka_samvatsara":"Aṅgirasa","bengali_samvat":1579,"malayalam_era":1348,"nanakshahi_year":703,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Māgha","lunar_month_amanta":"Māgha","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 Śukla Daśamī · Vikram 2229 Pārthiva · Śaka 2094 Aṅgirasa"},"festivals":[],"todays_walk":{"walk":{"id":"mangala-walk","name":"Maṅgala Walk","name_sanskrit":"मङ्गल यात्रा","type":"graha","description":"Right action + BG 2.31-38 (kṣatriya-dharma).","step_count":7,"url":"/walk/mangala-walk"},"reason":"Maṅgalavāra (Tuesday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3226-07-09","event":"Bhagavān Krishna's birth at Mathurā","chart_id":"krishna","shared_marker":"same Rohiṇī","url":"/day/-3226-07-09","relevance":0.5}]},"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 4, 2172 CE · Perth, Australia · Vidhyamitra","description":"February 4, 2172 CE for Perth, Australia: Śukla Daśamī, sūryodaya 05:44, sūryāsta 19:17.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2172-02-04","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2172-02-04","sa":"https://sa.vidhyamitra.com/city/perth/2172-02-04","hi":"https://hi.vidhyamitra.com/city/perth/2172-02-04","x-default":"https://vidhyamitra.com/city/perth/2172-02-04"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T15:51:42.924Z","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":"2026-05-31T15:51:42.924Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T15:51:42.924Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}