{"id":"vidhyamitra:city-day:perth:1901-10-15:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1901-10-15","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1901-10-15","date_display":"October 15, 1901 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":1901,"month":10,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2415672.770833,"kali_year":5003,"ahargana":1827207.2708,"sun":{"sidereal_longitude":178.0102,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":208.1034,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":3,"name":"Tṛtīyā","paksha":"Śukla","full_name":"Śukla Tṛtīyā","elongation_degrees":30.0932,"elapsed_within_tithi_degrees":6.0932},"nakshatra":{"number":16,"name":"Viśākhā","pada":3,"moon_longitude":208.1034,"elapsed_within_degrees":8.1034},"yoga":{"number":2,"name":"Prīti","sum_longitude":26.1137},"karana":{"half_tithi_index":5,"name":"Gara"},"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":1901,"month":10,"day":15,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2415672.770833,"ahargana":1827207.2708,"kali_year":5003,"ayanamsa_lahiri":22.481,"grahas":{"sun":{"sidereal_longitude":178.50619299999994,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":205.57829300000003,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":2},"retrograde":false,"latitude":0.1834},"mars":{"sidereal_longitude":219.24209299999995,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":204.80639299999996,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":255.26879299999996,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":221.54949299999998,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":259.31149300000004,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":205.7657,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":25.7657,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","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":1901,"month":10,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2415672.770833,"kali_year":5003,"ahargana":1827207.2708,"sun":{"sidereal_longitude":178.0102,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":208.1034,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":3,"name":"Tṛtīyā","paksha":"Śukla","full_name":"Śukla Tṛtīyā","elongation_degrees":30.0932,"elapsed_within_tithi_degrees":6.0932},"nakshatra":{"number":16,"name":"Viśākhā","pada":3,"moon_longitude":208.1034,"elapsed_within_degrees":8.1034},"yoga":{"number":2,"name":"Prīti","sum_longitude":26.1137},"karana":{"half_tithi_index":5,"name":"Gara"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":0.183,"elongation":30.093},"lunar":{"type":"lunar","occurs":false,"moon_latitude":0.183,"opposition_distance":149.907}},"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":"05:37","sunsetLocal":"18:26","solarNoonLocal":"12:02","dayLengthHours":12.819511976914836,"dayLengthDisplay":"12 Hours 49 Mins 10 Secs","nightLengthDisplay":"11 Hours 10 Mins 50 Secs","moonriseLocal":"07:03","moonsetLocal":"20:37","rahuKala":{"name":"Rāhu Kāla","start":"15:14","end":"16:50","startHours":15.233230821373574,"endHours":16.83566981848793,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"08:49","end":"10:26","startHours":8.823474832916158,"endHours":10.425913830030511,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:02","end":"13:38","startHours":12.028352827144866,"endHours":13.630791824259221,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:37","end":"09:02","startHours":8.609816299967576,"endHours":9.037133365864738,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:09","end":"06:30","startHours":6.1527431710589,"endHours":6.494596823776629,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:36","end":"12:27","startHours":11.601035761247704,"endHours":12.455669893042028,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:55","end":"04:46","startHours":3.9093285750988036,"endHours":4.7639627068931265,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:33","end":"05:37","startHours":4.550304173944546,"endHours":5.6185968386874485,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:10","end":"15:01","startHours":14.164938156630672,"endHours":15.019572288424994,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:14","end":"18:38","startHours":18.238108815602285,"endHours":18.638108815602283,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:26","end":"18:58","startHours":18.438108815602284,"endHours":18.972255147973737,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:11","end":"19:56","startHours":18.188108815602284,"endHours":19.938108815602284,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:36","end":"00:27","startHours":23.601035761247704,"endHours":24.455669893042025,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"05:37","end":"07:13","startHours":5.6185968386874485,"endHours":7.221035835801803,"quality":"inauspicious"},{"name":"Udveg","start":"07:13","end":"08:49","startHours":7.221035835801803,"endHours":8.823474832916158,"quality":"inauspicious"},{"name":"Chala","start":"08:49","end":"10:26","startHours":8.823474832916158,"endHours":10.425913830030511,"quality":"neutral"},{"name":"Labha","start":"10:26","end":"12:02","startHours":10.425913830030511,"endHours":12.028352827144866,"quality":"auspicious"},{"name":"Amṛta","start":"12:02","end":"13:38","startHours":12.028352827144866,"endHours":13.630791824259221,"quality":"auspicious"},{"name":"Kāla","start":"13:38","end":"15:14","startHours":13.630791824259221,"endHours":15.233230821373574,"quality":"inauspicious"},{"name":"Śubha","start":"15:14","end":"16:50","startHours":15.233230821373574,"endHours":16.83566981848793,"quality":"auspicious"},{"name":"Roga","start":"16:50","end":"18:26","startHours":16.83566981848793,"endHours":18.438108815602284,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"18:26","end":"19:50","startHours":18.438108815602284,"endHours":19.83566981848793,"quality":"inauspicious"},{"name":"Śubha","start":"19:50","end":"21:14","startHours":19.83566981848793,"endHours":21.233230821373574,"quality":"auspicious"},{"name":"Roga","start":"21:14","end":"22:38","startHours":21.233230821373574,"endHours":22.63079182425922,"quality":"inauspicious"},{"name":"Udveg","start":"22:38","end":"00:02","startHours":22.63079182425922,"endHours":24.028352827144865,"quality":"inauspicious"},{"name":"Chala","start":"00:02","end":"01:26","startHours":24.028352827144865,"endHours":25.42591383003051,"quality":"neutral"},{"name":"Labha","start":"01:26","end":"02:49","startHours":25.42591383003051,"endHours":26.82347483291616,"quality":"auspicious"},{"name":"Amṛta","start":"02:49","end":"04:13","startHours":26.82347483291616,"endHours":28.221035835801803,"quality":"auspicious"},{"name":"Kāla","start":"04:13","end":"05:37","startHours":28.221035835801803,"endHours":29.61859683868745,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:37","end":"06:37","startHours":5.6185968386874485,"endHours":6.6185968386874485,"planetary_lord":"Mars"},{"name":"Hora 2","start":"06:37","end":"07:37","startHours":6.6185968386874485,"endHours":7.6185968386874485,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"07:37","end":"08:37","startHours":7.6185968386874485,"endHours":8.618596838687449,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"08:37","end":"09:37","startHours":8.618596838687449,"endHours":9.618596838687449,"planetary_lord":"Moon"},{"name":"Hora 5","start":"09:37","end":"10:37","startHours":9.618596838687449,"endHours":10.618596838687449,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"10:37","end":"11:37","startHours":10.618596838687449,"endHours":11.618596838687449,"planetary_lord":"Venus"},{"name":"Hora 7","start":"11:37","end":"12:37","startHours":11.618596838687449,"endHours":12.618596838687449,"planetary_lord":"Sun"},{"name":"Hora 8","start":"12:37","end":"13:37","startHours":12.618596838687449,"endHours":13.618596838687449,"planetary_lord":"Mars"},{"name":"Hora 9","start":"13:37","end":"14:37","startHours":13.618596838687449,"endHours":14.618596838687449,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"14:37","end":"15:37","startHours":14.618596838687449,"endHours":15.618596838687449,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"15:37","end":"16:37","startHours":15.618596838687449,"endHours":16.61859683868745,"planetary_lord":"Moon"},{"name":"Hora 12","start":"16:37","end":"17:37","startHours":16.61859683868745,"endHours":17.61859683868745,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"17:37","end":"18:37","startHours":17.61859683868745,"endHours":18.61859683868745,"planetary_lord":"Venus"},{"name":"Hora 14","start":"18:37","end":"19:37","startHours":18.61859683868745,"endHours":19.61859683868745,"planetary_lord":"Sun"},{"name":"Hora 15","start":"19:37","end":"20:37","startHours":19.61859683868745,"endHours":20.61859683868745,"planetary_lord":"Mars"},{"name":"Hora 16","start":"20:37","end":"21:37","startHours":20.61859683868745,"endHours":21.61859683868745,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"21:37","end":"22:37","startHours":21.61859683868745,"endHours":22.61859683868745,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"22:37","end":"23:37","startHours":22.61859683868745,"endHours":23.61859683868745,"planetary_lord":"Moon"},{"name":"Hora 19","start":"23:37","end":"00:37","startHours":23.61859683868745,"endHours":24.61859683868745,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"00:37","end":"01:37","startHours":24.61859683868745,"endHours":25.61859683868745,"planetary_lord":"Venus"},{"name":"Hora 21","start":"01:37","end":"02:37","startHours":25.61859683868745,"endHours":26.61859683868745,"planetary_lord":"Sun"},{"name":"Hora 22","start":"02:37","end":"03:37","startHours":26.61859683868745,"endHours":27.61859683868745,"planetary_lord":"Mars"},{"name":"Hora 23","start":"03:37","end":"04:37","startHours":27.61859683868745,"endHours":28.61859683868745,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"04:37","end":"05:37","startHours":28.61859683868745,"endHours":29.61859683868745,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Hasta","Citrā","Svātī","Viśākhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Karka","Siṃha","Tulā","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Vṛścika","Makara","Kumbha"]},"dishaShool":"North (Uttara)","chandraVasa":"North","rahuVasa":"North","anandadiYoga":{"name":"Mātaṇga","quality":"Auspicious"},"tropicalRitu":"Śarad (Autumn) (tropical)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-8.189732683971702,"eotMinutes":14.85683037130801,"ayanamsa":22.481}},"calendars":{"vikram_samvat":1958,"vikram_samvatsara":"Ānanda","saka_samvat":1823,"saka_samvatsara":"Plava","bengali_samvat":1308,"malayalam_era":1077,"nanakshahi_year":432,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Āśvina","lunar_month_amanta":"Āśvina","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Śukla Tṛtīyā · Vikram 1958 Ānanda · Śaka 1823 Plava"},"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":"-0562-04-11","event":"Bhagavān Buddha's birth at Lumbinī","chart_id":"buddha","shared_marker":"same Viśākhā","url":"/day/-0562-04-11","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 October 15, 1901 CE · Perth, Australia · Vidhyamitra","description":"October 15, 1901 CE for Perth, Australia: Śukla Tṛtīyā, sūryodaya 05:37, sūryāsta 18:26.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1901-10-15","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1901-10-15","sa":"https://sa.vidhyamitra.com/city/perth/1901-10-15","hi":"https://hi.vidhyamitra.com/city/perth/1901-10-15","x-default":"https://vidhyamitra.com/city/perth/1901-10-15"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T20:35:17.885Z","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":"2026-06-02T20:35:17.885Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T20:35:17.885Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}