{"id":"vidhyamitra:city-day:perth:2019-10-17:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2019-10-17","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2019-10-17","date_display":"October 17, 2019 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":2019,"month":10,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458773.770833,"kali_year":5121,"ahargana":1870308.2708,"sun":{"sidereal_longitude":178.474,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":36.3003,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":217.8263,"elapsed_within_tithi_degrees":1.8263},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3,"moon_longitude":36.3003,"elapsed_within_degrees":9.6336},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":214.7743},"karana":{"half_tithi_index":36,"name":"Bava"},"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":2019,"month":10,"day":17,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2458773.770833,"ahargana":1870308.2708,"kali_year":5121,"ayanamsa_lahiri":24.1295,"grahas":{"sun":{"sidereal_longitude":179.25311799999997,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":35.10501799999997,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3},"retrograde":false,"latitude":-3.2227},"mars":{"sidereal_longitude":163.87821800000006,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":203.36911799999996,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":236.537018,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":195.985318,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":260.391218,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":82.0673,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":262.0673,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","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":2019,"month":10,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458773.770833,"kali_year":5121,"ahargana":1870308.2708,"sun":{"sidereal_longitude":178.474,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":36.3003,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":217.8263,"elapsed_within_tithi_degrees":1.8263},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3,"moon_longitude":36.3003,"elapsed_within_degrees":9.6336},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":214.7743},"karana":{"half_tithi_index":36,"name":"Bava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.223,"elongation":142.174},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.223,"opposition_distance":37.826}},"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":"05:34","sunsetLocal":"18:28","solarNoonLocal":"12:01","dayLengthHours":12.896218950095253,"dayLengthDisplay":"12 Hours 53 Mins 46 Secs","nightLengthDisplay":"11 Hours 06 Mins 14 Secs","moonriseLocal":"21:14","moonsetLocal":"07:35","rahuKala":{"name":"Rāhu Kāla","start":"13:38","end":"15:15","startHours":13.634203709394775,"endHours":15.246231078156681,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"05:34","end":"07:11","startHours":5.574066865585241,"endHours":7.186094234347148,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:48","end":"10:25","startHours":8.798121603109054,"endHours":10.41014897187096,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:35","end":"09:01","startHours":8.583184620607467,"endHours":9.013058585610642,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:07","end":"06:27","startHours":6.11140932183921,"endHours":6.455308493841749,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:36","end":"12:27","startHours":11.592302375629693,"endHours":12.452050305636043,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:51","end":"04:43","startHours":3.8545710055725406,"endHours":4.714318935578891,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:30","end":"05:34","startHours":4.499381953077304,"endHours":5.574066865585241,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:10","end":"15:02","startHours":14.171546165648742,"endHours":15.031294095655092,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:16","end":"18:40","startHours":18.270285815680495,"endHours":18.670285815680494,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:28","end":"19:00","startHours":18.470285815680494,"endHours":19.007628271934465,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:13","end":"19:58","startHours":18.220285815680494,"endHours":19.970285815680494,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:36","end":"00:27","startHours":23.592302375629693,"endHours":24.452050305636043,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"05:34","end":"07:11","startHours":5.574066865585241,"endHours":7.186094234347148,"quality":"auspicious"},{"name":"Roga","start":"07:11","end":"08:48","startHours":7.186094234347148,"endHours":8.798121603109054,"quality":"inauspicious"},{"name":"Udveg","start":"08:48","end":"10:25","startHours":8.798121603109054,"endHours":10.41014897187096,"quality":"inauspicious"},{"name":"Chala","start":"10:25","end":"12:01","startHours":10.41014897187096,"endHours":12.022176340632868,"quality":"neutral"},{"name":"Labha","start":"12:01","end":"13:38","startHours":12.022176340632868,"endHours":13.634203709394775,"quality":"auspicious"},{"name":"Amṛta","start":"13:38","end":"15:15","startHours":13.634203709394775,"endHours":15.246231078156681,"quality":"auspicious"},{"name":"Kāla","start":"15:15","end":"16:51","startHours":15.246231078156681,"endHours":16.858258446918587,"quality":"inauspicious"},{"name":"Śubha","start":"16:51","end":"18:28","startHours":16.858258446918587,"endHours":18.470285815680494,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"18:28","end":"19:51","startHours":18.470285815680494,"endHours":19.858258446918587,"quality":"auspicious"},{"name":"Kāla","start":"19:51","end":"21:15","startHours":19.858258446918587,"endHours":21.246231078156683,"quality":"inauspicious"},{"name":"Śubha","start":"21:15","end":"22:38","startHours":21.246231078156683,"endHours":22.634203709394775,"quality":"auspicious"},{"name":"Roga","start":"22:38","end":"00:01","startHours":22.634203709394775,"endHours":24.022176340632868,"quality":"inauspicious"},{"name":"Udveg","start":"00:01","end":"01:25","startHours":24.022176340632868,"endHours":25.41014897187096,"quality":"inauspicious"},{"name":"Chala","start":"01:25","end":"02:48","startHours":25.41014897187096,"endHours":26.798121603109053,"quality":"neutral"},{"name":"Labha","start":"02:48","end":"04:11","startHours":26.798121603109053,"endHours":28.18609423434715,"quality":"auspicious"},{"name":"Amṛta","start":"04:11","end":"05:34","startHours":28.18609423434715,"endHours":29.57406686558524,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:34","end":"06:34","startHours":5.574066865585241,"endHours":6.574066865585241,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"06:34","end":"07:34","startHours":6.574066865585241,"endHours":7.574066865585241,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"07:34","end":"08:34","startHours":7.574066865585241,"endHours":8.574066865585241,"planetary_lord":"Moon"},{"name":"Hora 4","start":"08:34","end":"09:34","startHours":8.574066865585241,"endHours":9.574066865585241,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"09:34","end":"10:34","startHours":9.574066865585241,"endHours":10.574066865585241,"planetary_lord":"Venus"},{"name":"Hora 6","start":"10:34","end":"11:34","startHours":10.574066865585241,"endHours":11.574066865585241,"planetary_lord":"Sun"},{"name":"Hora 7","start":"11:34","end":"12:34","startHours":11.574066865585241,"endHours":12.574066865585241,"planetary_lord":"Mars"},{"name":"Hora 8","start":"12:34","end":"13:34","startHours":12.574066865585241,"endHours":13.574066865585241,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"13:34","end":"14:34","startHours":13.574066865585241,"endHours":14.574066865585241,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"14:34","end":"15:34","startHours":14.574066865585241,"endHours":15.574066865585241,"planetary_lord":"Moon"},{"name":"Hora 11","start":"15:34","end":"16:34","startHours":15.574066865585241,"endHours":16.57406686558524,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"16:34","end":"17:34","startHours":16.57406686558524,"endHours":17.57406686558524,"planetary_lord":"Venus"},{"name":"Hora 13","start":"17:34","end":"18:34","startHours":17.57406686558524,"endHours":18.57406686558524,"planetary_lord":"Sun"},{"name":"Hora 14","start":"18:34","end":"19:34","startHours":18.57406686558524,"endHours":19.57406686558524,"planetary_lord":"Mars"},{"name":"Hora 15","start":"19:34","end":"20:34","startHours":19.57406686558524,"endHours":20.57406686558524,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"20:34","end":"21:34","startHours":20.57406686558524,"endHours":21.57406686558524,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"21:34","end":"22:34","startHours":21.57406686558524,"endHours":22.57406686558524,"planetary_lord":"Moon"},{"name":"Hora 18","start":"22:34","end":"23:34","startHours":22.57406686558524,"endHours":23.57406686558524,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"23:34","end":"00:34","startHours":23.57406686558524,"endHours":24.57406686558524,"planetary_lord":"Venus"},{"name":"Hora 20","start":"00:34","end":"01:34","startHours":24.57406686558524,"endHours":25.57406686558524,"planetary_lord":"Sun"},{"name":"Hora 21","start":"01:34","end":"02:34","startHours":25.57406686558524,"endHours":26.57406686558524,"planetary_lord":"Mars"},{"name":"Hora 22","start":"02:34","end":"03:34","startHours":26.57406686558524,"endHours":27.57406686558524,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"03:34","end":"04:34","startHours":27.57406686558524,"endHours":28.57406686558524,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"04:34","end":"05:34","startHours":28.57406686558524,"endHours":29.57406686558524,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Hasta","Citrā","Svātī","Viśākhā","Anurādhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Revatī"],"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":"South (Dakṣiṇa)","chandraVasa":"South-East","rahuVasa":"North-West","anandadiYoga":{"name":"Siddhi","quality":"Auspicious"},"drikRitu":"Śarad (Autumn) (Drik)","vedicRitu":"Varṣā (Monsoon)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-9.082000519818083,"eotMinutes":15.227419562027912,"ayanamsa":24.1295}},"calendars":{"vikram_samvat":2076,"vikram_samvatsara":"Paridhāvi","saka_samvat":1941,"saka_samvatsara":"Vikāri","bengali_samvat":1426,"malayalam_era":1195,"nanakshahi_year":550,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Kṛṣṇa Pakṣa","solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Kṛṣṇa Caturthī · Vikram 2076 Paridhāvi · Śaka 1941 Vikāri"},"festivals":[{"id":"kanya-sankranti","name":"Kanyā Saṅkrānti (Mahālaya begins)","name_sanskrit":"कन्या सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Virgo; Mahālaya / Pitṛ-Pakṣa solar marker.","vrata":false,"detection":{"sun_rashi":"Kanyā"},"precedence":4},{"id":"sankashti-chaturthi","name":"Saṅkaṣṭī Caturthī","name_sanskrit":"सङ्कष्टी चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Gaṇeśa vrata.","vrata":true,"detection":{"tithi_number":19,"tithi_paksha":"Kṛṣṇa"},"precedence":6}],"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":[{"historical_date":"-3137-10-04","event":"Mahābhārata Day 1 (Bhagavad Gītā delivered)","chart_id":"krishna","shared_marker":"same Kṛttikā","url":"/day/-3137-10-04","relevance":0.5},{"historical_date":"-3137-12-25","event":"Bhīṣma's Mahaprasthan","chart_id":"bhishma","shared_marker":"same Kṛttikā","url":"/day/-3137-12-25","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 17, 2019 CE · Perth, Australia · Vidhyamitra","description":"October 17, 2019 CE for Perth, Australia: Kṛṣṇa Caturthī, sūryodaya 05:34, sūryāsta 18:28.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2019-10-17","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2019-10-17","sa":"https://sa.vidhyamitra.com/city/perth/2019-10-17","hi":"https://hi.vidhyamitra.com/city/perth/2019-10-17","x-default":"https://vidhyamitra.com/city/perth/2019-10-17"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T14:23:41.062Z","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":"2026-05-15T14:23:41.062Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T14:23:41.062Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}