{"id":"vidhyamitra:city-day:perth:1906-10-20:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1906-10-20","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1906-10-20","date_display":"October 20, 1906 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":1906,"month":10,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2417503.770833,"kali_year":5008,"ahargana":1829038.2708,"sun":{"sidereal_longitude":182.6934,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":209.3902,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":3,"name":"Tṛtīyā","paksha":"Śukla","full_name":"Śukla Tṛtīyā","elongation_degrees":26.6968,"elapsed_within_tithi_degrees":2.6968},"nakshatra":{"number":16,"name":"Viśākhā","pada":3,"moon_longitude":209.3902,"elapsed_within_degrees":9.3902},"yoga":{"number":3,"name":"Āyuṣmān","sum_longitude":32.0836},"karana":{"half_tithi_index":4,"name":"Taitila"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"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":1906,"month":10,"day":20,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2417503.770833,"ahargana":1829038.2708,"kali_year":5008,"ayanamsa_lahiri":22.5511,"grahas":{"sun":{"sidereal_longitude":183.19113600000003,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":212.34083599999997,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":16,"name":"Viśākhā","pada":4},"retrograde":false,"latitude":4.4225},"mars":{"sidereal_longitude":152.38473599999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":200.92593599999998,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":79.62493599999999,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":226.45723599999997,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":317.548636,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4},"retrograde":true},"rahu":{"sidereal_longitude":108.7505,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":288.7505,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","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":1906,"month":10,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2417503.770833,"kali_year":5008,"ahargana":1829038.2708,"sun":{"sidereal_longitude":182.6934,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":209.3902,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":3,"name":"Tṛtīyā","paksha":"Śukla","full_name":"Śukla Tṛtīyā","elongation_degrees":26.6968,"elapsed_within_tithi_degrees":2.6968},"nakshatra":{"number":16,"name":"Viśākhā","pada":3,"moon_longitude":209.3902,"elapsed_within_degrees":9.3902},"yoga":{"number":3,"name":"Āyuṣmān","sum_longitude":32.0836},"karana":{"half_tithi_index":4,"name":"Taitila"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.422,"elongation":26.697},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.422,"opposition_distance":153.303}},"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":"05:32","sunsetLocal":"18:30","solarNoonLocal":"12:01","dayLengthHours":12.971102059878461,"dayLengthDisplay":"12 Hours 58 Mins 16 Secs","nightLengthDisplay":"11 Hours 01 Mins 44 Secs","moonriseLocal":"07:05","moonsetLocal":"20:50","rahuKala":{"name":"Rāhu Kāla","start":"08:46","end":"10:24","startHours":8.771576630959864,"endHours":10.392964388444671,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:38","end":"15:15","startHours":13.635739903414287,"endHours":15.257127660899094,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"05:32","end":"07:09","startHours":5.528801115990249,"endHours":7.150188873475057,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:33","end":"08:59","startHours":8.555391596628557,"endHours":8.987761665291172,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:04","end":"06:25","startHours":6.069263701818518,"endHours":6.4151597567486105,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:35","end":"12:27","startHours":11.581982077266863,"endHours":12.446722214592095,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:48","end":"04:40","startHours":3.7993208413397874,"endHours":4.6640609786650185,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:27","end":"05:32","startHours":4.447875944333711,"endHours":5.528801115990249,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:11","end":"15:02","startHours":14.176202489242556,"endHours":15.040942626567787,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:18","end":"18:42","startHours":18.29990317586871,"endHours":18.69990317586871,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:30","end":"19:02","startHours":18.49990317586871,"endHours":19.04036576169698,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:15","end":"20:00","startHours":18.24990317586871,"endHours":19.99990317586871,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:35","end":"00:27","startHours":23.581982077266865,"endHours":24.446722214592093,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"05:32","end":"07:09","startHours":5.528801115990249,"endHours":7.150188873475057,"quality":"inauspicious"},{"name":"Śubha","start":"07:09","end":"08:46","startHours":7.150188873475057,"endHours":8.771576630959864,"quality":"auspicious"},{"name":"Roga","start":"08:46","end":"10:24","startHours":8.771576630959864,"endHours":10.392964388444671,"quality":"inauspicious"},{"name":"Udveg","start":"10:24","end":"12:01","startHours":10.392964388444671,"endHours":12.014352145929479,"quality":"inauspicious"},{"name":"Chala","start":"12:01","end":"13:38","startHours":12.014352145929479,"endHours":13.635739903414287,"quality":"neutral"},{"name":"Labha","start":"13:38","end":"15:15","startHours":13.635739903414287,"endHours":15.257127660899094,"quality":"auspicious"},{"name":"Amṛta","start":"15:15","end":"16:53","startHours":15.257127660899094,"endHours":16.878515418383902,"quality":"auspicious"},{"name":"Kāla","start":"16:53","end":"18:30","startHours":16.878515418383902,"endHours":18.49990317586871,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"18:30","end":"19:53","startHours":18.49990317586871,"endHours":19.878515418383902,"quality":"auspicious"},{"name":"Amṛta","start":"19:53","end":"21:15","startHours":19.878515418383902,"endHours":21.257127660899094,"quality":"auspicious"},{"name":"Kāla","start":"21:15","end":"22:38","startHours":21.257127660899094,"endHours":22.635739903414287,"quality":"inauspicious"},{"name":"Śubha","start":"22:38","end":"00:01","startHours":22.635739903414287,"endHours":24.01435214592948,"quality":"auspicious"},{"name":"Roga","start":"00:01","end":"01:24","startHours":24.01435214592948,"endHours":25.39296438844467,"quality":"inauspicious"},{"name":"Udveg","start":"01:24","end":"02:46","startHours":25.39296438844467,"endHours":26.771576630959864,"quality":"inauspicious"},{"name":"Chala","start":"02:46","end":"04:09","startHours":26.771576630959864,"endHours":28.150188873475056,"quality":"neutral"},{"name":"Labha","start":"04:09","end":"05:32","startHours":28.150188873475056,"endHours":29.528801115990248,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:32","end":"06:32","startHours":5.528801115990249,"endHours":6.528801115990249,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"06:32","end":"07:32","startHours":6.528801115990249,"endHours":7.528801115990249,"planetary_lord":"Moon"},{"name":"Hora 3","start":"07:32","end":"08:32","startHours":7.528801115990249,"endHours":8.528801115990248,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"08:32","end":"09:32","startHours":8.528801115990248,"endHours":9.528801115990248,"planetary_lord":"Venus"},{"name":"Hora 5","start":"09:32","end":"10:32","startHours":9.528801115990248,"endHours":10.528801115990248,"planetary_lord":"Sun"},{"name":"Hora 6","start":"10:32","end":"11:32","startHours":10.528801115990248,"endHours":11.528801115990248,"planetary_lord":"Mars"},{"name":"Hora 7","start":"11:32","end":"12:32","startHours":11.528801115990248,"endHours":12.528801115990248,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"12:32","end":"13:32","startHours":12.528801115990248,"endHours":13.528801115990248,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"13:32","end":"14:32","startHours":13.528801115990248,"endHours":14.528801115990248,"planetary_lord":"Moon"},{"name":"Hora 10","start":"14:32","end":"15:32","startHours":14.528801115990248,"endHours":15.528801115990248,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"15:32","end":"16:32","startHours":15.528801115990248,"endHours":16.528801115990248,"planetary_lord":"Venus"},{"name":"Hora 12","start":"16:32","end":"17:32","startHours":16.528801115990248,"endHours":17.528801115990248,"planetary_lord":"Sun"},{"name":"Hora 13","start":"17:32","end":"18:32","startHours":17.528801115990248,"endHours":18.528801115990248,"planetary_lord":"Mars"},{"name":"Hora 14","start":"18:32","end":"19:32","startHours":18.528801115990248,"endHours":19.528801115990248,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"19:32","end":"20:32","startHours":19.528801115990248,"endHours":20.528801115990248,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"20:32","end":"21:32","startHours":20.528801115990248,"endHours":21.528801115990248,"planetary_lord":"Moon"},{"name":"Hora 17","start":"21:32","end":"22:32","startHours":21.528801115990248,"endHours":22.528801115990248,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"22:32","end":"23:32","startHours":22.528801115990248,"endHours":23.528801115990248,"planetary_lord":"Venus"},{"name":"Hora 19","start":"23:32","end":"00:32","startHours":23.528801115990248,"endHours":24.528801115990248,"planetary_lord":"Sun"},{"name":"Hora 20","start":"00:32","end":"01:32","startHours":24.528801115990248,"endHours":25.528801115990248,"planetary_lord":"Mars"},{"name":"Hora 21","start":"01:32","end":"02:32","startHours":25.528801115990248,"endHours":26.528801115990248,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"02:32","end":"03:32","startHours":26.528801115990248,"endHours":27.528801115990248,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"03:32","end":"04:32","startHours":27.528801115990248,"endHours":28.528801115990248,"planetary_lord":"Moon"},{"name":"Hora 24","start":"04:32","end":"05:32","startHours":28.528801115990248,"endHours":29.528801115990248,"planetary_lord":"Mercury"}],"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","Vṛṣabha","Siṃha","Kanyā","Vṛścika","Makara"],"unfavorable_rashis":["Mithuna","Karka","Tulā","Dhanu","Kumbha","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"North-East","rahuVasa":"East","anandadiYoga":{"name":"Maitra","quality":"Auspicious"},"tropicalRitu":"Śarad (Autumn)","vedicRitu":"Śarad (Autumn)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-9.947424871939091,"eotMinutes":15.696871244231174,"ayanamsa":22.5511}},"calendars":{"vikram_samvat":1963,"vikram_samvatsara":"Siddhārthī","saka_samvat":1828,"saka_samvatsara":"Parābhava","bengali_samvat":1313,"malayalam_era":1082,"nanakshahi_year":437,"lunar_month":"Kārtika","lunar_month_paksha_full":"Kārtika Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Kārtika","lunar_month_amanta":"Kārtika","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Tulā (Aippasi)","ritu":"Śarad (Autumn)","display_summary":"Kārtika Śukla Tṛtīyā · Vikram 1963 Siddhārthī · Śaka 1828 Parābhava"},"festivals":[],"todays_walk":{"walk":{"id":"shani-walk","name":"Śani Walk","name_sanskrit":"शनि यात्रा","type":"graha","description":"Tapas + endurance + BG 17.14-19.","step_count":7,"url":"/walk/shani-walk"},"reason":"Śanivāra (Saturday) — 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 20, 1906 CE · Perth, Australia · Vidhyamitra","description":"October 20, 1906 CE for Perth, Australia: Śukla Tṛtīyā, sūryodaya 05:32, sūryāsta 18:30.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1906-10-20","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1906-10-20","sa":"https://sa.vidhyamitra.com/city/perth/1906-10-20","hi":"https://hi.vidhyamitra.com/city/perth/1906-10-20","x-default":"https://vidhyamitra.com/city/perth/1906-10-20"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T08:23:50.329Z","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":"2026-06-02T08:23:50.329Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T08:23:50.329Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}